Kereskedelmi, irodai és ipari

Product Description
1. Signal voltage at the drive end: 3.6-24V
2. Output voltage range: 3.6-30V (The output current depends on the specific situation but not 10MA, the total power is certain, and the voltage and current are inversely proportional)
3. The jumper cap can realize whether the output terminal is high-potential output or pull-down output.
4. The 4 817 channels on the board are all independent, which can realize simultaneous control of different voltages, etc.
5: Board size: length: 48mm; width: 38mm; long side hole distance: 42mm; wide side hole distance: 32mm
When encountering the need for isolation control and voltage conversion in actual work, this module will be used.
It can realize 3.3V or 5V control 3.6---24V voltage level interface. After the control terminal is turned on, the controlled terminal will also be turned on.
The photoelectric isolation has strong anti-interference ability. Later, it can drive high-power transistors, MOS tubes and other occasions that require high-voltage drive, and can also directly drive low-power 24V relays to work.
If it is a pulse signal, please note that the limit of 817 is below 4KHZ, please do not use this module for control signals greater than 4KHZ, it will not work properly.

Product Description
1. We guarantee that all chips are brand new imported industrial-grade chips with ultra-long-distance transmission up to thousands of meters.
2. ESD protection with plus or minus 15KV
3. The chip has a limited slew rate driver, which minimizes EMI and reduces signal reflection caused by improper terminal matching cables, so that the error-free signal transmission rate is as high as 500Kbps.
4. Receiver input impedance with 1/4 unit load, supports multi-machine communication, and allows connection to the bus with more than 128 devices.
5. The operating temperature of industrial-grade chips can reach -40°C to 85°C.
6. This module can be hot-swapped, and there will be no signal plugging caused by hot-swapping of other 485 chips.
7. The power supply uses SMD tantalum electrolytic capacitors, and uses double capacitors for high and low frequency power supply filtering
8. Using dual transient suppression diodes, the overvoltage protection performance is better
9. Use 10Ω current protection resistor, patch design to improve 485 signal integrity
10. With terminals and welding lead holes, it is convenient to debug and finalize the wiring, and the welding leads can improve the signal reliability
11. RS485 and TTL signals are all routed on one side to ensure signal quality and improve signal integrity
12. Spread copper on a large area to prevent signal interference
13. With 2.54 pitch hole plate welding holes, it is convenient for your secondary development
14. With M3 screw holes that are quite commonly used at present, it is convenient and reliable to install
15. With 120Ω termination resistance, short-circuit R16 to enable termination resistance
16. With power and RXD, TXD signal indicator lights, you can have a panoramic view of the transceiver status
17. Angled pin leads to facilitate testing
18. Support 3.3V and 5V signal control, stronger compatibility

Description
1, the original chip CP2102, generate COM port after installing the driver.
2, then the standard input MICRO MINI-USB cable connected to the computer USB interface, with 3.3V and 5V two power output
3, with a resettable fuse. In the event of accidental short-circuit can effectively protect your device and computer USB port to download
4, on-board status indicators, receiving indicator properly installed drive status indicator remains, send and receive indicator flashes when the communication with run LED indicator.
5, supports baud rates from 300bps ~ 1Mbps between
6, the communication format support: 1) data bits 5,6,7,8; 2) support 1.5, 2 stop bits; 3) odd, even, mark, space, none parity
7, supported operating systems: windows 8.1 / 7 / vista / xp / 98, Mac OS-X / OS-9, Linux
8, USB seat MICRO MINI-USB interface Block
9, chip components for the regular company of welding, stable quality, beautiful appearance
10 with DTR trigger signal output can be directly pro mini ATMEGA328P and other board download traffic.
11, module size: 16mm * 20mm super small.


Features:

1. embedded USB transceiver, no external circuit device
2. containing clock circuit, no external circuit device
3. contains power-on reset circuit
The on-chip voltage regulator within the 3.3V output
5. Meet the USB2.0 specification requirements
6.SUSPEND pins support USB suspend state
7. asynchronous serial data bus compatible with all handshakes and modulation controller interface signals
8. Support data format is 8 data bits, 1 stop bit and the parity bit
9. connotation 512 byte receive buffer and 512 byte transmit buffer
10. Supports hardware or X-ON / X-OFF Handshake



How to install the driver

win7 / win8
1, first open the package, like the way next, remember installation directory
2, according to the following method to start the service
3. Locate the driver in Device Manager, select Update Driver, browse my computer for driver,
select the directory just installed, determine waiting like

win8.1

Right update drivers automatically find the drivers, it will prompt the driving data is invalid, in fact, the problem often encountered in windows8, the drive is no problem, the beginning has been installed on, and later discovered may be a hardware incompatibility.
If you are using Windows8 or windows 8.1, but is non-genuine ghost or other systems, and uses a variety of optimization tools Streamlining system, then in the process of installing the driver, you may encounter the "Data invalid" wrong
"Invalid Data" solutions are as follows:

1, press Winkey R on the keyboard, the pop-up "Run" dialog, enter "services.msc",
also by under "Computer Management" window, find the "service";
2, found in the list of services "Device Install Service" and "Device Setup Manager" two service items,
make sure these two services is turned on, if not open, you can click the left side of the "Start" service.



Package Included:
1 x CP2102 MICRO USB to UART TTL Module 6Pin Serial Converter STC Replace FT232 NEW

Description:
Input Voltage: DC 3V-35V
Output Voltage: DC 4V-40V (continuously adjustable)
Efficiency: 94% (MAX)
Size:L37mm*W32mm*H15mm
Working Temperature: -40°- 85°
Load capacity:Max 80W
The way of Connection: the connection terminal is does not need to be welded, the "IN" is the input,
and the "OUT" is the output.
Note:
When the output voltage is closer to the output voltage,the carrying capacity is higher,and the efficiency is
also higher.Package included: 1PCS DC-DC Adjustable Step-up Boost Power Supply Module
Package included:
1*3V 5V 12V to 19V 24V 30V 36V Adjustable DC-DC 1A Step Up Power Supply Module

Instructions for use:
Installing the microcontroller, 28-pin, 40-pin microcontroller left aligned 28/40P (A) This flag line short-circuit cap on the A position.
The 8,14,18,20-pin microcontroller aligned on the left 8P/14P/18P/20P flag line (B), shorting cap on the B position.
The ICD2, KIT2, KIT3 crystal head or 6Pin Block programming connection for programming the programming operation. (Note: a separate program of the seat can not be programmed the chip is programmed functions)
The seat supports the following programming microcontroller:
PIC16/18XX 40PIN Series devices (except 16F59)
PIC16/18XX 28PIN Series devices (except 16F57)
PIC16/18XX 18PIN Series devices
The PIC 8PIN/14PIN/20PIN family of devices (except 10FXX)

Features:
1. With voltmeter display, voltmeter error is ± 0.1V, range is 4 ～ 40V. (Note: the input voltage is lower than 4V, the onboard voltmeter does not work and does not display)
2. Large volume 5 * 5 touch the button to switch between measuring input or output voltage, and an indicator light shows which terminal voltage is being measured. By default, the digital tube displays the input voltage and the input indicator IN is on. When the button is touched, the digital tube displays the output voltage and the output indicator OUT is on. And keep the last setting, even after power off
3. The voltmeter can be turned off. Press and hold the switch for more than 1 second and less than 4 seconds. After the voltmeter is turned off, just press the switch briefly to turn on the voltmeter.
4. The input and output voltage measurement error calibration function, long press the switch for more than 4 seconds, and enter the voltage measurement error calibration function after releasing the hand. At this time, the IN light is on (calibrating the input terminal), and the digital tube flashes to display a more positive value (factory parameter is 0.0). At this time, you can change this value by pressing the button shortly (the value range is -0.5 ～ 0.5, the unit is V). A positive number indicates upward calibration, and a negative number indicates downward calibration. After adjusting the calibration value of the input terminal, press and hold the button for more than 2 seconds, and enter the error calibration of the output terminal after releasing. At this time, the OUT light is on (calibrating the output terminal), and the calibration value of the output terminal is displayed. The adjustment method is the same as that of the input terminal. After the calibration value at the output end, press and hold the button for more than 2 seconds, and save the set value and return to the normal display voltage after letting go, the set correction value will take effect immediately and will not be lost after power failure. (With this function, you can meet your higher accuracy requirements)
5.With terminal block, it is convenient to use without soldering iron, and the welding wire connection point is reserved
(The input voltage must be more than 1v higher than the voltage to be output)
6. The maximum output current can be as high as 3A. It is recommended that the working current be about 2A.
7. It adopts the internal oscillation frequency of 150KHz, which belongs to the second-generation switching voltage regulator, with low power consumption and high efficiency.
Scope of application
This module can be used in step-down fields where the input voltage is higher than the output voltage, such as batteries, power transformers, DIY adjustable regulated power supplies, 24 car pen-based power supplies, industrial equipment step-down, 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, 35V to 24v, etc.
Self-calibration method of on-board voltmeter:
1. Input and output voltage measurement error calibration: long press the switch for more than 4 seconds, and after letting go, it will enter the voltage measurement error calibration function. At this time, the IN light is on (calibration input terminal), and the digital tube flashes to display the positive value (the factory parameter is 0.0 ), at this time, short press the button to change this value (the value range is -0.5～0.5. The unit is V), a positive number means upward calibration, and a negative number means downward calibration. After adjusting the calibration value of the input terminal, press and hold the button for more than 2 seconds. After letting go, enter the error calibration of the output terminal. At this time, the OUT light is on (calibration output terminal), and the calibration value of the output terminal is displayed. The adjustment method is the same as that of the input terminal. After the calibration value of the output terminal, press and hold the button for more than 2 seconds. After letting go, save the set value and return to the normal display voltage. The set correction value will take effect immediately and will not be lost after power failure. (With this function, you can meet your higher precision requirements)
2 Turn off the voltmeter: Press and hold the switch for more than 1 second and less than 4 seconds, and then let it go to turn it off. After the voltmeter is closed, simply press the switch to turn on the voltmeter.
Some customers reported that the output voltage of the module cannot be adjusted and is always equal to the input voltage. When you encounter this kind of problem, please turn the potentiometer counterclockwise for more than 10 turns, and then use the module to adjust the voltage normally. Because when the step-down module leaves the factory, the default output voltage is about 20V.
Module usage tutorial:
1. The input and output voltage measurement error is more accurate: press and hold the switch for more than 4 seconds, and the voltage measurement error comparison function is entered after releasing the hand. At this time, the IN light is on (calibrating the input end), and the digital tube flashes to display a more positive value (the factory parameter is 0.0 ), At this moment, press this button to change this value (the value range is -0.5 ～ 0.5, the unit is V), positive number means upward calibration, negative number means downward calibration. After adjusting the calibration value of the input terminal, press and hold the button for more than 2 seconds, and enter the error calibration of the output terminal after releasing. At this time, the OUT light is on (calibrating the output terminal), and the calibration value of the output terminal is displayed. The adjustment method is the same as that of the input terminal. After the calibration value at the output end, press and hold the button for more than 2 seconds, and save the set value and return to the normal display voltage after letting go, the set correction value will take effect immediately and will not be lost after power failure. (With this function, you can meet your higher accuracy requirements)
2. Turn off the voltmeter: long press the switch for more than 1 second and less than 4 seconds, you can turn it off with a loose hand. After the voltmeter is turned off, just press the switch briefly to turn on the voltmeter.
Precautions:
1. It is recommended to use a heat sink to enhance heat dissipation when the power usage exceeds 15W.
2. Some customers report that the module output voltage cannot be adjusted and is always equal to the input voltage. When you encounter this problem, please turn the potentiometer counterclockwise more than 10 times before using the module to adjust the voltage normally. Because when the buck module leaves the factory, the default output voltage is about 20V.

Product Description
1. There are not only PWR power supply lights, but also TXD and RXD indicator lights, which make it easy to intuitively know whether the product is working without the instrument;
2. Support Windows 98 / me / 2000 / XP / Server 2003 / Vista / Server 2008 / win7 / win8 32 bit / 64 bit / win10 64 bit
3. Small size and high performance
4.3v3/5v optional
5. Micro USB interface data cable
6. With 3.3V voltage regulator chip, super stable operation, compatible with 5V, 3.3V MCU program download and debugging!
7. Module size is 15.7mm * 15.7mm, PCB size is 16.02mm * 17.4625mm
Product parameters: size
Product Name: ch340e msop10 USB to TTL module
Product size: 15.7mm * 15.7mm * 1.6mm (L x W x H)

Package include
25*1N4148 switching signal Doide DO-35
25*1N4007 1A 1000V Rectifier Diode DO-41
10*1N5819 1A 40V SCHOTTKY DIODE DO-41
10*1N5399 1.5A 1000V 4.8W Rectifier Diode DO-15
10*FR107 Fast Recovery Diodes FR107 1A 1000V DO-41
10*FR207 2A 1000V Fast Recovery Diodes DO-41
5*1N5408 Diode Rectifier 3.0 amp 1000V DO-201AD
5*1N5822 40V 3A SCHOTTKY DIODE DO-201AD

Description:
USB boost/buck power supply module, powered by USB, adjust potentiometer to get the required voltage.
Features:
One button to turn off the output;
Supply ON/OFF display screen;
S
upport low power mode;
Support sleep mode;
Support both standard USB and Micro USB and pads input voltage;
.Potentiometer with rotating handle.
.Parameters:
Input voltage: DC 3.5-12V;
Output voltage:DC 1.2-24V;
Output power:
Input 1.2-2V,output power within 2W;
Input 2V-20V,output power within 3W;
Input 20V-24V,output power with in 2.5W;
4>.Display:3Bit digital tube display;
5>.Size:80*20*14mm.
4.Use steps:
1>.Input voltage from Standard USB or Micro USB or ‘VIN ’ and ‘VIN-’;
2>.Turn ON display screen;
3>.Adjust potentiometer to get the required voltage;
4>.Connect load.
5.Application:
1>.Ordinary power supply;
2>.Battery charger;
3>.LED drive power;
4>.Instrument voltage display;
5>.Test meter;
6>.Circuit test;
7>.Power conversion.
6.Please Note:
1>.It is not a high power supply, please use it within the power range.
7.Package:
1>.1pcs XY-UP USB boost/buck power supply module

Product Description
1. Two independent PWM outputs, the frequency and duty cycle can be set separately;
2. Wide frequency range and high precision;
3. Serial communication is possible
1. Module description
Two independent PWM outputs, the frequency and duty cycle can be set separately;
The frequency is divided into three ranges:
1. XXX (no decimal point): The minimum unit is 1Hz, and the value range is 1Hz~999Hz;
2. XX.X (the decimal point is in ten's place): the smallest unit is 0.1Khz; the value range is 0.1KHz~99.9KHz
3. X.X.X. (three digits have a decimal point): the smallest unit is 1Khz; the value range is 1KHz~150KHz
e.g. Frequency display: 100 means PWM output 100Hz pulse;
54.1 means that the PWM outputs a 54.1KHz pulse;
1.2.4. Indicates that the PWM output 124KHz pulse
Duty cycle value range: 0~100;
The three frequency ranges share a duty cycle, and all set parameters are saved after power-off.

Features:
Products for WTV020 chip module plug the SD card, supports 32M ~ 1GBit capacity card;
Supports the FAT file system, SD card as storage medium;
And supports playback of WAV format files 4Bit ADCPM;
Supports automatic speech recognition folders and file playback;
You can play background music and commercials language;
Control methods are key control, second control and UART232 serial control;
WTV master chip has WTV020-16SOP and WTV020-20SOP two packages, both of which are compatible;
You can play any segment of speech;
Operating voltage: DC2.6 ~ 3.6V;
Classified by folder store content, easy to operate.
2 Product Overview
WTV020 plug-in SD card Voice module, the main chip selection WTV020-16S and WTV020-20S package chips. Voice updates directly through an SD card reader on a PC replacement. Control is also an SD card stored in TXT file changes. The module supports the FAT file system. Support and ADPCM WAV file playback. Supports two-wire serial control mode, key methods and UART232 serial manner. Automatic speech recognition and speech sample rate format.

Product Description
Size: 56 * 21 * 11mm
Color: red, yellow green
LED: 5mm * 3
Brightness: Normal brightness
Voltage: 5V
Input: Digital signal output
Interface: common cathode red yellow-green control

Description
Scope of application: beginners, experimental equipment platform, interactive electronics, robots, etc.
Features: Many functions, easy to operate, powerful driver library support and function updates.
Disadvantages: I/O occupies more when driving four-way motors at the same time (relative to versions with less I/O), low power.
It can drive 4 DC motors or 2 stepping motors while driving 2 servos, supporting the latest UNO, Mega 2560
You can match this like this:
Drive four DC motors and two servos
Drive two DC motors and one stepper motor and two servos
Drive two stepper motors and two servos
a very goodelectronicProductionGetting started, with the motor expansion board can be very goodrobotDevelopmentplatform. Here is a description of the ability to drive a variety of simple to slightly more complicatedprojectFull-featured motor expansion board.
This is a commonly usedDCdriveModule, adopted293DChip small current DC motor driver chip. The pin is madeitsCompatible and convenientFanFast based on itDevelopment.
* Two 5V servo motor (rudder) ports Connect to its high resolution and high precision timer - no jitter!
* Up to 4 bidirectional DC motors and 4 PWM speed adjustments (approximately 0.5% resolution)
* Up to 2 stepper motors with positive and negative control, single/double step control, interleaved or microstep and rotary angle control.
* 4-way H-bridge: The L293D chip provides .0.6A (peak 1.2A) current per bridge and thermal shutdown protection, 4.5V to 36V.
* Pull-down resistors ensure that the motor remains stopped at power-up.
* Large terminal terminals make wiring easier (10 - 22AWG) and power supply.
* With its reset button.
* 2 large terminal external power terminals ensure separation of logic and motor drive power.
* Compatible with Mega, Diecimila, & Duemilanove.
* Provide a full set of spare parts for DIY fans who want to do it themselves.
*downloadEasy to use its software library for rapid project development

Description
1. Onboard HXJ8002 single-channel 3W audio power amplifier chip connected with BTL bridge
2. Working voltage: 2.0-5.5V
3. Standby current: 0.6uA (typical value)
4. When the input signal is 1kHz frequency, 8Ω load, and the average output power is 1W, the maximum distortion is 0.5%
5. When THD D<10% and input frequency of 1KHZ, the output power under different load conditions is (typical value): 3W (load 3Ω); 2.5W (load 4Ω); 1.5W (load 8Ω)
6. Board size: 19.8(mm)x14.2(mm)

Product Description
Category: Sensors, Transducers
Family: Position Sensors - Angle, Linear Position Measuring
Series: SV01
For Measuring: Rotary Position
Technology: Resistive
Rotation Angle - Electrical, Mechanical: 0° ~ 333.3°, Continuous
Output: Analog Voltage Output
Actuator Type: Hole for Shaft
Linearity: ±2%
Resistance (Ohms): 10k
Resistance Tolerance: ±30%
Mounting Type: Surface Mount
Termination Style: SMD (SMT) Tab
Operating Temperature: -40°C ~ 85°C

Product Description
Name: AD7705 Dual 16-bit ADC data acquisition module
Model: AD7705
Data collection is very stable, the real 16 valid words.
This product by Ann Fuller electronic design and production, to provide Chinese data, the module schematics and routines (C51, AVR, STM8, STM32F4)
STM32-V5 development board wiring methods: directly into the interface socket NRF24L01 on the can.

Features:

1,3.3V or 5.0V DC power supply
2, MCU interface: SPI
3, the main ADC chip: TM7705 (new chip factory in Shenzhen Tianwei, and AD7705 chip is fully compatible)
4, external LM285-2.5 reference voltage (imported genuine authentic)
5, the input circuit with a voltage divider resistors and RC filter, enabling customers to change their own gain range
6, the chip programmable gain amplifier with a gain range: 1-128 times
7, with a chip buffer amplifier input can be directly connected to the sensor.


Front view: (the actual delivery, 4P pin is not soldered to facilitate the customer\\\'s own choice of welding direction)

Product Description
Size: 51 * 26.3 * 14 (L * W * H) (mm)
Operating Temperature: -40 ° to 85 °
Voltage Regulation: ± 2.5%
Load Regulation: ± 0.5%
Output ripple: 50mV (max) 20M bandwidth
Switching frequency: 300KHz
Conversion efficiency: 95% (the highest)
Output current: adjustable maximum 5A
Output voltage: 0.8V-30V
Input voltage: 5V-32V
Rectification: non-synchronous rectification
Module Properties: non-isolated constant current and voltage module.
★ The module uses imported high-quality chips, high efficiency (95% higher), and at the same time generates a small amount of heat, which can reach a current of 5A. At the same time, it cooperates with the original TI op amp to control the output current, so that the overall output is very stable.
★ This module uses the original Sanyo filter capacitor with low ESR, which can make the ripple voltage as low as 50mV!
★ This module uses machine placement and reflow soldering. At the same time, each module undergoes a two-hour aging test before shipment to ensure high reliability.
★ This module is an adjustable step-down module, and the output voltage can be changed by adjusting the blue adjustable resistor on the module. The input and output voltage difference is 1V, and the small voltage can output 0.8V.
★ The IN- (input negative), IN (input positive), OUT- (output negative), and OUT (output positive) marked on the module must be connected correctly, otherwise the module may be damaged.
★ Battery charging method of use:
1. Determine the float voltage and charging current of the rechargeable battery you need, and the input voltage of the module;
2. Adjust the constant voltage potentiometer to adjust the output voltage to about 5V.
3. Measure the output short-circuit current with the 10A current block of a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined charging current value;
4. The default shipping current of the charging lamp is 0.1 times the charging current (constant current value).
5. Adjust the constant voltage potentiometer to make the output voltage reach the float voltage;
6. Connect the battery and try charging.
(Steps 1, 2, 3, 4, and 5 are for the module input to connect to the power supply, and the output does not connect to the battery without load.)
★ LED constant current drive How to use:
1. Determine the operating current and high operating voltage you need to drive the LED;
2. Adjust the constant voltage potentiometer to adjust the output voltage to about 5V.
3. Measure the output short-circuit current with the 10A current block of a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined LED working current;
4. Adjust the constant voltage potentiometer to make the output voltage reach the LED high working voltage;
5. Connect the LED and test the machine.
(Steps 1, 2, 3, and 4 are to connect the module input to the power supply, and the output does not connect to the LED light without load.)

Product Description
Two-channel digital amplifier board

Amplifier chip: TPA3110
Working voltage: 8 ~ 26VDC (power input with polarity protection)
Recommended power supply: 12V DC current 2A
Output power: 2X15W
Recommended speaker impedance: 4 ~ 10 ohms
With mute interface: MUTE (generally vacant without)

Introduction
DFPlayer Mini is a small and cheap MP3 module, can be directly connects the speaker. Module with battery power supply, speaker, keys can be used alone, can also be via a serial port control, as the UNO or anything with a serial port of single chip microcomputer a module. Perfect integration module itself hard to decode MP3, WAV, WMA. Software support TF card drive at the same time, support the FAT16, FAT32 file system. Through a simple serial port can play the specified music instruction, and how to play music, and other functions, without tedious underlying operating, easy to use, stable and reliable.
1, support the sampling rate (KHz) : 8/11.025/12/16/22 05/24/32/44.1/48
2, 24 bits DAC output dynamic range support: 90 db, SNR support: 85 db
3, fully support the FAT16, FAT32 file system, the largest support 32 gb TF card, support 32 gb usb flash drive, 64 m byte NORFLASH
4, a variety of optional control mode. IO control, serial port, AD button control mode
5, radio call waiting function, there is background music can be suspended. Advertising is back in the background continue to play
6, audio data according to the folder, maximum 100 folders, every folder can be allocated 255 tracks
Class 7, 30 volume is adjustable, 6 EQ is adjustable
1, vehicle-mounted navigation speech
2, highway transportation inspection, toll station voice prompt
3, railway station, bus station security check voice prompt
4, electric power, telecommunication, finance, business hall voice prompt
5, vehicle into and out of channel to verify voice prompt
6, * * voice prompt frontier inspection channels
7, multi-channel voice alarm or equipment operation guide voice
8, electric sightseeing car security speech notices
9, electrical and mechanical equipment failure alarm automatically
10, fire fighting voice alarm prompt
11, automatic broadcasting equipment, broadcast regularly

Introduction
DFPlayer Mini is a small and cheap MP3 module, can be directly connects the speaker. Module with battery power supply, speaker, keys can be used alone, can also be via a serial port control, as the UNO or anything with a serial port of single chip microcomputer a module. Perfect integration module itself hard to decode MP3, WAV, WMA. Software support TF card drive at the same time, support the FAT16, FAT32 file system. Through a simple serial port can play the specified music instruction, and how to play music, and other functions, without tedious underlying operating, easy to use, stable and reliable.
1, support the sampling rate (KHz) : 8/11.025/12/16/22 05/24/32/44.1/48
2, 24 bits DAC output dynamic range support: 90 db, SNR support: 85 db
3, fully support the FAT16, FAT32 file system, the largest support 32 gb TF card, support 32 gb usb flash drive, 64 m byte NORFLASH
4, a variety of optional control mode. IO control, serial port, AD button control mode
5, radio call waiting function, there is background music can be suspended. Advertising is back in the background continue to play
6, audio data according to the folder, maximum 100 folders, every folder can be allocated 255 tracks
Class 7, 30 volume is adjustable, 6 EQ is adjustable
1, vehicle-mounted navigation speech
2, highway transportation inspection, toll station voice prompt
3, railway station, bus station security check voice prompt
4, electric power, telecommunication, finance, business hall voice prompt
5, vehicle into and out of channel to verify voice prompt
6, * * voice prompt frontier inspection channels
7, multi-channel voice alarm or equipment operation guide voice
8, electric sightseeing car security speech notices
9, electrical and mechanical equipment failure alarm automatically
10, fire fighting voice alarm prompt
11, automatic broadcasting equipment, broadcast regularly

Description
1. The onboard MAX485 chip is a low power consumption and limited slew rate transceiver for RS-485 communication
2. The board is connected to 5.08 (mm) spacing 2P terminal, which is convenient for RS-485 communication wiring
3. All the pins of the chip have been led out and can be controlled and operated by the single-chip microcomputer
4. Working voltage: 5V
5. Board size: 46(mm)x12(mm)
Package Contents:
5 X MAX485 TTL to RS485 module

Product Description
CNC shield V4 needs to work with Nano board. It can be used as driver expansion board for engraving machines and 3D printers. It has in total 3 channel slots for A4988 stepper motor driver modules (not included) for driving 3 channel of stepper motors. Each channel of stepper motor only needs 2 IO ports, which means 6 IO ports is sufficient to manage 3 stepper motors. This shield can make quick work for managing stepper motors in your project.
Specification:
1. 3 axis stepper motor driver
2. Compatible with micro-drive laser engraving machine, three-axis CNC engraving machine,.
3. 2A can be controlled within the two-phase four-wire stepper motor.
4. Released the digital IO interface, easy to connect to other modules, such as ENDSTOP.
5. Released the I2C interface, you can connect to the LCD I2C or other I2C module.
6. Power DC5V interface, 7.5-12V voltage input.
7. GRBL compatible
8. Worked with aduino nano.
1.Using A4988 module
2.Five different step mode
3.Adjust the maximum current output, so as to obtain a higher rate of step.
4.Open source firmware that runs on an Arduino UNO that turns G-code commands into stepper signals
5.Can drive four A4988 stepper motor

Product Description
CNC shield V4 needs to work with Nano board. It can be used as driver expansion board for engraving machines and 3D printers. It has in total 3 channel slots for A4988 stepper motor driver modules (not included) for driving 3 channel of stepper motors. Each channel of stepper motor only needs 2 IO ports, which means 6 IO ports is sufficient to manage 3 stepper motors. This shield can make quick work for managing stepper motors in your project.
Specification:
1. 3 axis stepper motor driver
2. Compatible with micro-drive laser engraving machine, three-axis CNC engraving machine,.
3. 2A can be controlled within the two-phase four-wire stepper motor.
4. Released the digital IO interface, easy to connect to other modules, such as ENDSTOP.
5. Released the I2C interface, you can connect to the LCD I2C or other I2C module.
6. Power DC5V interface, 7.5-12V voltage input.
7. GRBL compatible
8. Worked with aduino nano.
1.Using A4988 module
2.Five different step mode
3.Adjust the maximum current output, so as to obtain a higher rate of step.
4.Open source firmware that runs on an Arduino UNO that turns G-code commands into stepper signals
5.Can drive four A4988 stepper motor

Product Description
SMD component test clip Technical parameters:
Lead length: 400mm, grip length: 145mm, probe length: 5mm
Maximum opening of clip: 10mm
For SMD resistors, capacitors, IC testing
One-hand operation, convenient and practical

Product Description
First, the main chip:ISD1820
Second, the size:38 mm * 42.5 mm
Third, the working voltage: DC3-5V
Fourth, the main features:
1, Easy to use10Second voice recording
2, High-quality, natural voice reduction
3, Can be used as a loudspeaker module
4, With loop, jog play, single-pass playback
5, Available single-chip control
6, This module can be directly driven8Europe0.5WSmall speakers
Power supply:3-5V, Can be accessed by pin power;
Recording and playback control:Key control or single-chip, control linesIOHas been elicited;
Press to control the recording and playback operation method:
RECkey:Recording button, press and hold can be recorded, release the button to stop recording;
RLAYEkey:Trigger mode playback, click to play the current entire paragraph of the voice;
PLAYLkey:Jog mode playback, press and hold before playback, release to stop playback;
RPLJumper:Loop mode control, can be looped;
FTJumper:Through control, can make the microphone head voice to the speaker playback;
Note: The module output power is small, so the sound is also small, it is recommended to meet our miniature digital audio amplifier board and use3WSpeakers, can be used to achieve greater sound effects.

Product Description
First, the main chip:ISD1820
Second, the size:38 mm * 42.5 mm
Third, the working voltage: DC3-5V
Fourth, the main features:
1, Easy to use10Second voice recording
2, High-quality, natural voice reduction
3, Can be used as a loudspeaker module
4, With loop, jog play, single-pass playback
5, Available single-chip control
6, This module can be directly driven8Europe0.5WSmall speakers
Power supply:3-5V, Can be accessed by pin power;
Recording and playback control:Key control or single-chip, control linesIOHas been elicited;
Press to control the recording and playback operation method:
RECkey:Recording button, press and hold can be recorded, release the button to stop recording;
RLAYEkey:Trigger mode playback, click to play the current entire paragraph of the voice;
PLAYLkey:Jog mode playback, press and hold before playback, release to stop playback;
RPLJumper:Loop mode control, can be looped;
FTJumper:Through control, can make the microphone head voice to the speaker playback;
Note: The module output power is small, so the sound is also small, it is recommended to meet our miniature digital audio amplifier board and use3WSpeakers, can be used to achieve greater sound effects.

Description
The power amplifier board using the official standard circuit design, chip selection is used in the United States imported original Longding micro class D amplifier chip. This chip is not strong we can go to check it under the information.
Good product chip and the vast number of music lovers will share, this is our consistent philosophy! The power amplifier with high efficiency, large power, in the case of 12V power supply can output 10W 10 W power, the chip without heat sink, but also with overheating, overcurrent protection, features can be said to be very powerful.
The board has a switch function, the SW shorted, will close the amplifier.

Product Description
1.conventional constant voltage output topology BOOST fully integrated solutions, integrated MOSFET, fewer external components, lower system cost
2,.wide voltage range input,the input voltage up to 35V
3. output voltage is adjustable,supports up to 40V
4.built-in over-temperature protection, overcurrent protection circuit full set of reliability, high reliability
5.the system conversion efficiency of over 90% , to facilitate thermal design
6.TO263-5L standard package,suitable for 30W boost applications within.
Instructions:
1. Power (3-35V), power indicator light, the module is working properly.
2. Adjust the blue potentiometer knob (counter-clockwise general boost, buck clockwise rotation) and with a multimeter to monitor the output voltage reaches the required voltage.
NOTE:
1. Current work long hours is recommended for use in less than 2.5M, while adding bulk Heat sink (10W output above); because it is boosting module, in order to ensure stable output Set, please keep the minimum 1.5V differential.

Description
·Using FT232RL chip;
· Lead out all signal ports of FT232RL chip, TTL/CMOS level;
·RXD/TXD transceiver communication indicator;
·USB power supply, optional 5V or 3.3V interface level (if you need other levels, you can directly provide the target voltage on the VCC and GND pins).
Features:
Brand new and high quality 100% .
Material: PCB electronic components
Support 3.3 v, 5 v
Main color: red
Chip: FT232RL
RXD / TXD transceiver communication indicators
Definition: DTR, RXD TXD, VCC, CTS, GND
Pitch: 2.54mm
Module size: 36 mm (length) * 17.5 mm (width)
List:
1 x FT232RL TTL serial module

PRODUCT PARAMETERS
Product model: AHT20
Power supply voltage: 2.0-5.5V DC
Measurement range (humidity) : 0~100% RH
Measuring range (temperature):-40~ 85℃
Humidity accuracy:2% RH(25℃)
Temperature accuracy:0.3℃
Resolution: Temperature: 0.01℃ Humidity: 0.024% RHOutput signal: l2°℃ signal
PIN DEFINITION
1 VIN: Supply voltage
2 GND: Power ground
3 SCL: Serial clock, bidirectional
4 SDA: Serial data, two-way

Features:
1. The knob monochromatic dimmer is a kind of controller which can realize the stepless dimming.
2. Using the control mode of the knob, it is a kind of dimmer that can realize 0-100% no pole dimming, and the user can adjust the light to the appropriate brightness according to the actual needs.
3. It is used to control all kinds of lamps and lanterns with LED as light source, such as LED, LED module, LED lamp string etc.
4. Application scenarios: urban lighting, holiday atmosphere, KTV, gym, car lights, etc.
Specifications:
Working temperature: -20-60℃
Power supply voltage: 12V-24V
Output: Single loop
Static power: <1W
Maximum load current: 8A
Output power: 12V<96W, 24V<192W
Product size: approx. 89*60*48mm/3.5*2.36*1.88''
Note:
Please allow 1-3cm differs due to manual measurement.
Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.

Product Description:
Weight:28 g
Color: as picture show
Size:75mmx48mm/2.95"x1.89"(inch) (approx)
The rated voltage: DC12V
Voltage range: DC7.0 V-13.6 V
The input power: 0.24 A
The rated speed: 9500 R.P.M
Temperature range:-10.. 70 ° C
Txpect life: 25 ° C L10 when expected life 50000 hours
Bearing structure: free maintenance dual ball bearings
Rotation direction: the wind from stents place eduction, facing the rotor counter-clockwise
The wiring way: red-black signal: blue (blue line, the alarm line speed, it is necessary to pay attention to). Line about 20 cm long
The biggest air volume: 26.8 m? / h
The electric motor protection : overload protection, wrong level protection and stall lock current protection
Minimum wind pressure : 0.. 120 Pa
Noise index : 41.9 dB (A)
Material qualitative material: glass fiber reinforced plastic, PBT shell, PA blades
Function explain : electronic reversing the rotor dc fans, complete electronic directional control components
Including the following resources:
1. 8 key
2. 8 LED common cathode
3. 8 a digital tube common cathode
Use TM1638 digital tube drive chip to drive common cathode LED digital tube
How to connect:
VCC GND 5V power supply, STB CLK DIO MCU I/O port
This module for the chip TM1638, set the above three kinds of single chip microcomputer common peripheral circuit, the biggest characteristic is to simply take microcontroller three IO mouth can drive, scanning display and key scan don't need microcontroller intervention, only need to register to display data related to reading and writing or testing buttons, save MCU resources. Buy the module provides an example program.
Wiring methods :
VCC GND connected 5V supply, STB CLK DIO connected microcontroller IO port.

Description
1. PRodukt einführung MH-M18/M28/M38 ist ein low-power-Bluetooth design lösung, die unterstützt die neueste Bluetooth 4,2 übertragung, zwei-kanal stereo verlustfreie wiedergabe, und Bluetooth drahtlose übertragung wenn das modul ist verbunden zu Bluetooth, die ist sehr bequem. In einer offenen umgebung, die Bluetooth verbindung abstand kann bis zu 20 meter. Weit verbreitet in einer vielzahl von Bluetooth audio empfang, eine vielzahl von audio DIY änderung. Für ihre verschiedenen bedürfnisse, wir bieten 3 versionen für sie zu wählen aus:
2 .. funktion/Pin definition 1. bluetooth V4.2 version, unterstützung Bluetooth automatische verbindung technologie, unterstützung WAV/WMA/FLAC/APE/MP3 verlustfreie decodierung, stereo dual channel ausgang. 2. nach die modul ist powered auf, die handy sucht für die Bluetooth name MH-M18/MH-M28/MH-M38, und kann musik spielen nach dem anschluss Bluetooth. 3, modul blau anzeige licht: Wenn die Bluetooth ist nicht verbunden, die anzeige licht blinkt schnell; Wenn die bluetooth-verbindung ist auf, die anzeige licht ist immer auf; Die folgenden ist eine einführung zu jeder version: MH-M18: PCB größe: 23*16*2,5mm (länge, breite und höhe) Pin pitch: 2,54mm (kann direkt angebracht oder gelötet)
3. funktion/Pin definition 1 . die interface nimmt eine semi-loch prozess, die ist bequem für kunden zu direkt befestigen oder solder zu die bord. 2 . 1. Bluetooth V4.2 version, unterstützung Bluetooth automatische verbindung technologie, unterstützung WAV/WMA/FLAC/APE/MP3 verlustfreie decodierung, stereo dual channel ausgang. PIN KEINE Funktion Beschreibung 1 SCHLÜSSEL Button control terminal (4 taste funktionen, zusätzliche widerstände wie verdrahtung diagramm) 2 STUMM Mute control terminal (ausgangs hohe 3,3 v wenn muting, ausgang niedrigen niveau während der wiedergabe) 3 VCC Positive netzteil 5 v (lithium-batterie 3,7 v netzteil erfordert kurzschluss diode) 4 GND GND 5 L Linken kanal 6 R Rechten kanal
PIN Beschreibung 1 5 v 5 v 2 GND GND 3 VBAT Lithium-batterie 3,7 v power supply3.7V-4,2 v 4 L Linken kanal 5 R Rechten kanal 6 AGND Audio GND
1. netzteil: Sie können direkt verwenden die MICRO USB Android kabel 5 v für direkt strom versorgung, oder sie können auch verbinden 5 v netzteil oder 3,7 v lithium-batterie (wie unten dargestellt). Hinweis, dass die 5 v und 3,7 v netzteil schnittstellen sind verschiedene. Die 5 v spannung ist verbunden zu 5 v und GND, und die 3,7 v lithium-batterie ist verbunden zu VBAT und GND. 2. audio ausgang: Die kopfhörer kann direkt an die 3,5mm audio interface, oder es kann verdrahtet werden für die audio eingang der power verstärker bord (die interface L/R /AGND kann direkt verdrahtete wie gezeigt).
PIN Beschreibung 1 5 v 5 v 2 GND GND 3 VBAT Lithium-batterie 3,7 v power supply3.7V-4,2 v 4 L Linken kanal 5 R Rechten kanal 1. netzteil: Sie können direkt verwenden die MICRO USB Android kabel 5 v für direkt strom versorgung, oder sie können auch verbinden 5 v netzteil oder 3,7 v lithium-batterie (wie unten dargestellt). Hinweis, dass die 5 v und 3,7 v netzteil schnittstellen sind verschiedene. Die 5 v spannung ist verbunden zu 5 v und GND, und die 3,7 v lithium-batterie ist verbunden zu VBAT und GND. Die maximale betriebs strom ist 5V2A. Es wird empfohlen, eine geregelte 5V2A netzteil für besseren klang qualität. 2. unterstützung USB soundkarte, freies stick (stecker und spielen). Schließen sie das modul an den computer mit einem usb-kabel, und die computer können spielen musik durch das modul verstärker ausgang. Audio ausgang: ausgang links und rechts stereo audio signale, angeschlossen werden kann zwei 2-8 ohm, 3-5 watt lautsprecher, und 4 Euro 5 watt lautsprecher. 3. dieses produkt hat seine eigenen dual 5 watt power verstärker schaltung, und muss nicht verbunden werden zu einem anderen verstärker! Die ausgänge der zwei verstärker kann nicht verbunden werden in parallel oder die negative pole können miteinander verbunden werden, sonst die power verstärker chip kann beschädigt werden.

Description
1. PRodukt einführung MH-M18/M28/M38 ist ein low-power-Bluetooth design lösung, die unterstützt die neueste Bluetooth 4,2 übertragung, zwei-kanal stereo verlustfreie wiedergabe, und Bluetooth drahtlose übertragung wenn das modul ist verbunden zu Bluetooth, die ist sehr bequem. In einer offenen umgebung, die Bluetooth verbindung abstand kann bis zu 20 meter. Weit verbreitet in einer vielzahl von Bluetooth audio empfang, eine vielzahl von audio DIY änderung. Für ihre verschiedenen bedürfnisse, wir bieten 3 versionen für sie zu wählen aus:
2 .. funktion/Pin definition 1. bluetooth V4.2 version, unterstützung Bluetooth automatische verbindung technologie, unterstützung WAV/WMA/FLAC/APE/MP3 verlustfreie decodierung, stereo dual channel ausgang. 2. nach die modul ist powered auf, die handy sucht für die Bluetooth name MH-M18/MH-M28/MH-M38, und kann musik spielen nach dem anschluss Bluetooth. 3, modul blau anzeige licht: Wenn die Bluetooth ist nicht verbunden, die anzeige licht blinkt schnell; Wenn die bluetooth-verbindung ist auf, die anzeige licht ist immer auf; Die folgenden ist eine einführung zu jeder version: MH-M18: PCB größe: 23*16*2,5mm (länge, breite und höhe) Pin pitch: 2,54mm (kann direkt angebracht oder gelötet)
3. funktion/Pin definition 1 . die interface nimmt eine semi-loch prozess, die ist bequem für kunden zu direkt befestigen oder solder zu die bord. 2 . 1. Bluetooth V4.2 version, unterstützung Bluetooth automatische verbindung technologie, unterstützung WAV/WMA/FLAC/APE/MP3 verlustfreie decodierung, stereo dual channel ausgang. PIN KEINE Funktion Beschreibung 1 SCHLÜSSEL Button control terminal (4 taste funktionen, zusätzliche widerstände wie verdrahtung diagramm) 2 STUMM Mute control terminal (ausgangs hohe 3,3 v wenn muting, ausgang niedrigen niveau während der wiedergabe) 3 VCC Positive netzteil 5 v (lithium-batterie 3,7 v netzteil erfordert kurzschluss diode) 4 GND GND 5 L Linken kanal 6 R Rechten kanal
PIN Beschreibung 1 5 v 5 v 2 GND GND 3 VBAT Lithium-batterie 3,7 v power supply3.7V-4,2 v 4 L Linken kanal 5 R Rechten kanal 6 AGND Audio GND
1. netzteil: Sie können direkt verwenden die MICRO USB Android kabel 5 v für direkt strom versorgung, oder sie können auch verbinden 5 v netzteil oder 3,7 v lithium-batterie (wie unten dargestellt). Hinweis, dass die 5 v und 3,7 v netzteil schnittstellen sind verschiedene. Die 5 v spannung ist verbunden zu 5 v und GND, und die 3,7 v lithium-batterie ist verbunden zu VBAT und GND. 2. audio ausgang: Die kopfhörer kann direkt an die 3,5mm audio interface, oder es kann verdrahtet werden für die audio eingang der power verstärker bord (die interface L/R /AGND kann direkt verdrahtete wie gezeigt).
PIN Beschreibung 1 5 v 5 v 2 GND GND 3 VBAT Lithium-batterie 3,7 v power supply3.7V-4,2 v 4 L Linken kanal 5 R Rechten kanal 1. netzteil: Sie können direkt verwenden die MICRO USB Android kabel 5 v für direkt strom versorgung, oder sie können auch verbinden 5 v netzteil oder 3,7 v lithium-batterie (wie unten dargestellt). Hinweis, dass die 5 v und 3,7 v netzteil schnittstellen sind verschiedene. Die 5 v spannung ist verbunden zu 5 v und GND, und die 3,7 v lithium-batterie ist verbunden zu VBAT und GND. Die maximale betriebs strom ist 5V2A. Es wird empfohlen, eine geregelte 5V2A netzteil für besseren klang qualität. 2. unterstützung USB soundkarte, freies stick (stecker und spielen). Schließen sie das modul an den computer mit einem usb-kabel, und die computer können spielen musik durch das modul verstärker ausgang. Audio ausgang: ausgang links und rechts stereo audio signale, angeschlossen werden kann zwei 2-8 ohm, 3-5 watt lautsprecher, und 4 Euro 5 watt lautsprecher. 3. dieses produkt hat seine eigenen dual 5 watt power verstärker schaltung, und muss nicht verbunden werden zu einem anderen verstärker! Die ausgänge der zwei verstärker kann nicht verbunden werden in parallel oder die negative pole können miteinander verbunden werden, sonst die power verstärker chip kann beschädigt werden.

Description
1. PRodukt einführung MH-M18/M28/M38 ist ein low-power-Bluetooth design lösung, die unterstützt die neueste Bluetooth 4,2 übertragung, zwei-kanal stereo verlustfreie wiedergabe, und Bluetooth drahtlose übertragung wenn das modul ist verbunden zu Bluetooth, die ist sehr bequem. In einer offenen umgebung, die Bluetooth verbindung abstand kann bis zu 20 meter. Weit verbreitet in einer vielzahl von Bluetooth audio empfang, eine vielzahl von audio DIY änderung. Für ihre verschiedenen bedürfnisse, wir bieten 3 versionen für sie zu wählen aus:
2 .. funktion/Pin definition 1. bluetooth V4.2 version, unterstützung Bluetooth automatische verbindung technologie, unterstützung WAV/WMA/FLAC/APE/MP3 verlustfreie decodierung, stereo dual channel ausgang. 2. nach die modul ist powered auf, die handy sucht für die Bluetooth name MH-M18/MH-M28/MH-M38, und kann musik spielen nach dem anschluss Bluetooth. 3, modul blau anzeige licht: Wenn die Bluetooth ist nicht verbunden, die anzeige licht blinkt schnell; Wenn die bluetooth-verbindung ist auf, die anzeige licht ist immer auf; Die folgenden ist eine einführung zu jeder version: MH-M18: PCB größe: 23*16*2,5mm (länge, breite und höhe) Pin pitch: 2,54mm (kann direkt angebracht oder gelötet)
3. funktion/Pin definition 1 . die interface nimmt eine semi-loch prozess, die ist bequem für kunden zu direkt befestigen oder solder zu die bord. 2 . 1. Bluetooth V4.2 version, unterstützung Bluetooth automatische verbindung technologie, unterstützung WAV/WMA/FLAC/APE/MP3 verlustfreie decodierung, stereo dual channel ausgang. PIN KEINE Funktion Beschreibung 1 SCHLÜSSEL Button control terminal (4 taste funktionen, zusätzliche widerstände wie verdrahtung diagramm) 2 STUMM Mute control terminal (ausgangs hohe 3,3 v wenn muting, ausgang niedrigen niveau während der wiedergabe) 3 VCC Positive netzteil 5 v (lithium-batterie 3,7 v netzteil erfordert kurzschluss diode) 4 GND GND 5 L Linken kanal 6 R Rechten kanal
PIN Beschreibung 1 5 v 5 v 2 GND GND 3 VBAT Lithium-batterie 3,7 v power supply3.7V-4,2 v 4 L Linken kanal 5 R Rechten kanal 6 AGND Audio GND
1. netzteil: Sie können direkt verwenden die MICRO USB Android kabel 5 v für direkt strom versorgung, oder sie können auch verbinden 5 v netzteil oder 3,7 v lithium-batterie (wie unten dargestellt). Hinweis, dass die 5 v und 3,7 v netzteil schnittstellen sind verschiedene. Die 5 v spannung ist verbunden zu 5 v und GND, und die 3,7 v lithium-batterie ist verbunden zu VBAT und GND. 2. audio ausgang: Die kopfhörer kann direkt an die 3,5mm audio interface, oder es kann verdrahtet werden für die audio eingang der power verstärker bord (die interface L/R /AGND kann direkt verdrahtete wie gezeigt).
PIN Beschreibung 1 5 v 5 v 2 GND GND 3 VBAT Lithium-batterie 3,7 v power supply3.7V-4,2 v 4 L Linken kanal 5 R Rechten kanal 1. netzteil: Sie können direkt verwenden die MICRO USB Android kabel 5 v für direkt strom versorgung, oder sie können auch verbinden 5 v netzteil oder 3,7 v lithium-batterie (wie unten dargestellt). Hinweis, dass die 5 v und 3,7 v netzteil schnittstellen sind verschiedene. Die 5 v spannung ist verbunden zu 5 v und GND, und die 3,7 v lithium-batterie ist verbunden zu VBAT und GND. Die maximale betriebs strom ist 5V2A. Es wird empfohlen, eine geregelte 5V2A netzteil für besseren klang qualität. 2. unterstützung USB soundkarte, freies stick (stecker und spielen). Schließen sie das modul an den computer mit einem usb-kabel, und die computer können spielen musik durch das modul verstärker ausgang. Audio ausgang: ausgang links und rechts stereo audio signale, angeschlossen werden kann zwei 2-8 ohm, 3-5 watt lautsprecher, und 4 Euro 5 watt lautsprecher. 3. dieses produkt hat seine eigenen dual 5 watt power verstärker schaltung, und muss nicht verbunden werden zu einem anderen verstärker! Die ausgänge der zwei verstärker kann nicht verbunden werden in parallel oder die negative pole können miteinander verbunden werden, sonst die power verstärker chip kann beschädigt werden.

Product Description
Use chip: MPU-6050
Power supply: 3-5v (internal low dropout voltage regulator)
Communication method: standard IIC communication protocol
Chip built-in 16bit AD converter, 16-bit data output
Gyroscope range: ±250 500 1000 2000 °/s
Acceleration range: ±2±4±8±16g
Using Immersion Gold PCB, machine welding process to ensure quality
Pin pitch 2.54mm

Description:
5V Relay Module 4-Channel
This is a 5V 4-Channel Relay interface board.
Be able to control various appliances, and other equipments with large current.
It can be controlled directly by Micro-controller (8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) .
5V 4-Channel Relay interface board, and each one needs 50-60mA Driver Current.
Equiped with high-current relay, AC250V 10A ; DC30V 10A.
Indication LED's for Relay output status.

Application:
Supports all MCU control.
The industrial field.
PLC control.
Smart home control.

Functional characteristics
8 bit three primary colors (red, green and blue) full color LED, scanning is control mode.
The same as the digital control method, the bit selection control corresponds to the LED lighting, and the segment control color.
Different color changes can be produced through different programs.
Suitable for 51/AVR/AVR/ARM/ard uino and other platforms.
The eight legs of D0-D7 control the eight LEDs respectively, so just connect the digital pins that correspond to Ard uino (as long as we connect the experiment to 2-9 pins in turn). There are three RG B feet beside it, which need to be connected with GND, bright red with R, bright green with G, bright blue with B, and all three at the same time.

Functional characteristics
8 bit three primary colors (red, green and blue) full color LED, scanning is control mode.
The same as the digital control method, the bit selection control corresponds to the LED lighting, and the segment control color.
Different color changes can be produced through different programs.
Suitable for 51/AVR/AVR/ARM/ard uino and other platforms.
The eight legs of D0-D7 control the eight LEDs respectively, so just connect the digital pins that correspond to Ard uino (as long as we connect the experiment to 2-9 pins in turn). There are three RG B feet beside it, which need to be connected with GND, bright red with R, bright green with G, bright blue with B, and all three at the same time.

Product features:
5-way flame sensor design, wide detection range (common single flame sensor detection range is about 30 ° With the increase of distance, the detection range of this product is more than 120 °）
2 can output digital signal (high and low level), easy to use
3 can output analog signal (voltage signal), can be more accurate measurement signal, suitable for high precision occasions
All the five outputs are equipped with status indicator, which makes it very convenient in debugging and practical application
The detection range of digital output is adjustable, the sensitivity of analog output is adjustable, and the design is more flexible
Using 1% resistance design (the flame sensors on the market are all designed with 5% resistance), the signal output is more accurate, which is suitable for the occasions requiring high-precision measurement
3 m3 mounting holes on 7 boards for easy installation
83.3v-9v power supply, compatible with most single chip microcomputer systems
SMT technology is used for SMT automatic welding, and the military quality is reliable
working principle:
This product can detect the short wave near infrared (SW-NIR) emitted by the flame in the wavelength range of 700-1100 nm, and output it through the electrical signal (voltage signal).
Applicable occasions:
All occasions required for flame detection
Use case:
firefighting robot
Fire alarm

Product Description
This tuning version of passive tuning board, the main function of the input audio signal for high and low frequency adjustment, and then sent to the amplifier board to enlarge
The principle of the product is that the audio signal is directly filtered through the RC filter to get the desired high and low sound through the RC capacitor. The tone board does not need power supply, but the volume after processing will be much smaller.
Parameters
Product Name: Passive tone board
Adjustable items: total volume treble bass
Number of channels: 2-channel
Knob spacing: 22.5mm
Socket type: XH2.54 ~ 3P
Appearance size: 56.28mm

10cm 3kinds 120pcs
20cm 3kinds 120pcs
20cm 3kinds 120pcs

10cm 3kinds 120pcs
20cm 3kinds 120pcs
20cm 3kinds 120pcs

10cm 3kinds 120pcs
20cm 3kinds 120pcs
20cm 3kinds 120pcs

Product Description
Wireless Bluetooth MP3 Audio Receiver Module BLT 4.2 Lossless Decoder Board Kit Low Consumption M28
Power supply: It can be directly powered by the Micro- USB Android cable 5V, or it can be connected to a 5V power supply or a 3.7V lithium battery. Note that the 5V and 3.7V power supply interfaces are different. The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.
Audio output: The earphone can be directly connected to the 3.5mm audio interface, or it can be wired for the audio input of the power amplifier board (interface L/R/AGND can be directly wired).
This product is a low-power Bluetooth design solution, supports the latest Bluetooth 4.2 transmission, two-channel stereo lossless playback, and the module can be connected to Bluetooth to quickly realize Bluetooth wireless transmission, which is very convenient. In an open environment, the Bluetooth connection distance can be up to 20 meters.
Widely used in a variety of Bluetooth audio reception, a variety of audio DIY modification.
color: picture color
material: metal
size: 4.5*2cm
Package Contents:
1 * Module
Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is /- 1-3cm.

Product Description
This high-voltage module is made using the principle of the Tesla coil. It outputs high-voltage pulsed high-voltage current. It is small in size, high in efficiency, and simple in the peripheral circuit (just connect the switch and the battery). The discharge intensity is violent.
Input parameters: 3.7-6V 4A Input line length: about 10 cm
Output parameters: 400KV 0.5A Line length: about 8 cm
Regarding the power supply: you can use a single 3.7V lithium battery or two in series, such as 18650 batteries, idle mobile phone batteries (with the protection board removed, the recommended capacity is more than 2000mAh) or nickel-cadmium/nickel-metal hydride battery packs, 4V or 6V lead-acid Battery, etc.

Product Description
3A polymer ternary lithium battery fast charging board (note that it is not suitable for 3.2V lithium iron phosphate battery)
Model: AILAVI-0503V1
Main control chip: IP2312
Input voltage: 4.5~5.5V
Charge cut-off voltage: 4.2V/4.35V (output voltage is available in 2 versions)
Charging current: 3A (can change current by adjusting resistance)
Indicator light: Yes, red: Work indicator. Blue: Full of indicators. Note: This product does not have a power indicator function, without battery protection function.
Conversion efficiency: 3A 93% , 2A 94% , 1A 95% (data is for reference only)
The IP2312 uses a full CC/CV charging mode.
When the battery voltage is lower than 3V, it enters the trickle charge mode and charges the battery with a charge current of 100mA.
When the battery voltage is greater than 3V, enter the constant current charging mode to charge the battery with the set constant current charging current.
When the battery voltage is close to 4.2V and the charging current is less than 300mA, it enters the constant voltage charging mode. After entering the constant voltage mode, the charging is stopped after every 4 minutes, and the battery voltage is detected to be higher than 4.15V: if it is higher than 4.15V, the charging is stopped; otherwise, the charging is continued, and then the detection is performed after 4 minutes.
When the battery is fully charged, if it detects that the battery voltage is lower than 4.1V, it will turn on to charge the battery.
Current adjustment instructions:
Default 3A, remove resistor 2A, replace with 135k resistor 1A
PCB size: 31*15mm
USB socket protrudes about 1mm

Description
Module nature: non-isolated step-down module (BUCK)
Input voltage: 4-38V (please try not to exceed 38V for input)
Output voltage: 1.25-36V continuously adjustable
Output current: 0-5A
Output power: 75W
Working temperature: -40~ 85 degrees
Working frequency: 180KHz
Conversion efficiency: 96%
Load regulation rate: S (I) ≤ 0.8% (input 24V, output 12V, measured when the load changes from 1 to 4.5A)
Voltage adjustment rate: S (u) ≤ 0.8% (when output 12V, 4A, the voltage is measured from 18~32V)
Power indicator: Yes
Short circuit protection: Yes (limited current 8A)
Over-temperature protection: Yes (automatically shut down the output after over-temperature)
Input reverse connection protection: None, (if necessary, please insert a high-current diode in series in the input)
Installation method: 2 3mm screws
Connection method: welding, V-IN is input, V-OUT is output
Module size: length 54mm width 23mm height 15mm
Application range:
This module can be used in step-down fields where the input voltage is higher than the output voltage, such as batteries, power transformers, DIY adjustable regulated power supplies, 24V car pen-based power supplies, industrial equipment step-down, 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, 36V to 24V, etc.

Description
1 The motor drive module itself comes with four L9110S chips.
2 Module power supply voltage: 2.5-12V
3 Suitable motor range: the motor working voltage is between 2.5v-12V and the working current is 0.8A. The voltage and current of the current smart cars on the market are within this range
4 It can drive 4 DC motors at the same time, or 2 4-wire 2-phase stepping motors.


Two module interface description
[10P black curved pin description]
1 A1 External MCU IO port
2 A2 External MCU IO port
3 B1 External MCU IO port
4 B2 External MCU IO port
5 C1 External MCU IO port

6 C2 External MCU IO port
7 D1 External MCU IO port
8 D2 External MCU IO port
9 External 2.5V-12V voltage

10-External GND
[8P PCB terminal description]
1 MOTORA is connected to 2 pins of DC motor, no direction
2 MOTORB Connect 2 pins of DC motor, no direction
3 MOTORC is connected to 2 pins of DC motor, no direction
4 MOTORD Connect 2 pins of DC motor, no direction

Three module instructions
Turn on VCC, GND module power indicator light is on
A1 inputs high level, A2 inputs low level, MOTORA motor rotates forward;
A1 inputs low level, A2 inputs high level, MOTORA motor reverses;
B1 input high level, B2 input low level, MOTORB motor rotates forward;

B1 input low level, B2 input high level, MOTORB motor reverses;
C1 input high level, C2 input low level, MOTORC motor rotates forward;

C1 input low level, C2 input high level, MOTORC motor reverses;
D1 input high level, D2 input low level, MOTORD motor rotates forward;

D1 input low level, D2 input high level, MOTORD motor reverses;

Description:
100% brand new and high quality L3G4200D 3-Axes Gyroscope Angular Rate Sensor Module This is a breakout board for the L3G4200D low-power three-axes angular rate sensor. The L3G4200D has a full scale of ±250/±500/±2000 dps and is capable of measuring rates with a user-selectable bandwidth. These work great in gaming and Useful virtual reality input devices, GPS navigation systems and robotics. Specifications: Chip: L3G4200D Power Supply: 3-5V Communication Mode: IIC / SPI communications protocol Measuring Range: 250/500/2000 dps Communication Interface: I2C (up to 400 kHz) or SPI (10 MHz; 4 & 3 wire) Operating temperature: -40 to 185 °F (-40 to 85 °C) Size: 23mm x 23mm Color: Blue