Tesztberendezés alkatrészei és tartozékai

Product description: Parameter: Chip: TPA3110 Condition:XH-A232 Application:Computer Supply Voltage:DC8V-26V Dissipation Power:30W 30W Size:53*45*14mm Channels:2 (2.0) Output impedance:4-8ohm Current: more than 3A Signal to noise ratio: 100db Weight:21g Package Included: 1PC TPA3110 Digital Power Audio Amplifier Board

Descriptions:
1. The USB sound card playing function (with USB connection to the computer into a USB sound card mode, after the first, not plug into the model USB connection on the computer to boot priority into USB AUDIO mode) 
2. Bluetooth AUDIO playback function, Bluetooth phone, telephone voice, function, Bluetooth background (other models down your phone will automatically enter the voice, the pattern of cell phone hang up and then back to former mode
3. Have an U disk broadcast function (U disk inserted into the USB playback mode, after the first, no U disk online skip this mode)
4. Have the function of TF card playing (TF inserted into the TF card mode, after the first, no TF card online skip this mode)
5. The (English) voice prompt function (you can choose to buy Chinese and English version) each pattern priority from high to low: USB sound card = > Bluetooth USB = > TF card (USB sound card U disk TF card When detected not on-line automatic press mode key to skip the corresponding mode)
6. Music mode supports decoding format: MP3, WMA, WAV, FLAC
7. Support tracking the breakpoint; The volume off electricity save
 
Features:
1. Excellent durability and coexistence
2. Ensure the stability of the Bluetooth transmission through a variety of techniques 
3. Intuitive LED indicator
4. Voice prompt, convenient to use
5. Wireless transmission distance ≥ 10 m
6. Using the latest bluetooth 4.2 protocol, which is downward compatible with other versions
7. Typical applications: Home Bluetooth Speakers, Speaker Maintenance, Car player modified, Computer Speaker Upgrade, Bluetooth MP3 Decoder, etc.
 
Specifications:
Power Supply: 3.3-5.0V
Working Current: 35mA
Channel: Stereo
Bluetooth Version: 4.2
Working Frequency: 2400-2485MHz
Receiving Sensitivity: -85dBm
Size: 8x4cm/3.15x1.57"  2.3x1.5cm/0.91x0.59"
Quantity: 1 Set
 
Note: 
Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Screen Size: 64x48 pixels (0.66” Across)
Operating Voltage: 3.3V
Driver IC: SSD1306
Interface: IIC(I2C)
IIC Address: 0x3C or 0x3D

 
Conversion can use a few chips is 1.8 V, such as winbond w25q64, macro mx25u1635 flourishing, mx25u6435 etc to burn written in 3.3 V programmer for conversion. These chips are normally used for apple computer motherboard.
 
Applicable as main 1.8 V chip:
winbond
W25q10ew w25q20ew, w25q20bw w25q40ew, w25q40bw, w25q80ew, w25q80bw, w25q16dw, w25q16fw, w25q32dw, w25q32fw, w25q64dw, w25q64fw, w25f128fw
In the macro
Mx25u5121e mx25r512f, mx25u1001e mx25r1035f, mx25u2033e, mx25r2035f, mx25u4035,
Mx25u4033e mx25u4032e, mx25r4035f mx25u8035, mx25u8035e, mx25u8033e, mx25u8032e,
Mx25r8035f mx25u1635e, mx25v1635f mx25u1635f, mx25r1635f, mx25u3235e, mx25u3235f,
Mx25r3235f mx25u6473f, mx25u6435f mx25r6435f, mx25u12873f, mx25u12835f,
Mx25u25635f mx25u51245g, mx25um51245g mx66u51235f
Such as...
​
Conversion can use a few chips is 1.8 V, such as winbond w25q64, macro mx25u1635 flourishing, mx25u6435 etc to burn written in 3.3 V programmer for conversion. These chips are normally used for apple computer motherboard.
 
Applicable as main 1.8 V chip:
winbond
W25q10ew w25q20ew, w25q20bw w25q40ew, w25q40bw, w25q80ew, w25q80bw, w25q16dw, w25q16fw, w25q32dw, w25q32fw, w25q64dw, w25q64fw, w25f128fw
In the macro
Mx25u5121e mx25r512f, mx25u1001e mx25r1035f, mx25u2033e, mx25r2035f, mx25u4035,
Mx25u4033e mx25u4032e, mx25r4035f mx25u8035, mx25u8035e, mx25u8033e, mx25u8032e,
Mx25r8035f mx25u1635e, mx25v1635f mx25u1635f, mx25r1635f, mx25u3235e, mx25u3235f,
Mx25r3235f mx25u6473f, mx25u6435f mx25r6435f, mx25u12873f, mx25u12835f,
Mx25u25635f mx25u51245g, mx25um51245g mx66u51235f
Such as...

Name: Single-cell lithium battery boost fast charging source module
Main control chip: TPS61088A
Identification chip: FP6601Q
Input voltage: 2.8 ~ 4.5V, very suitable for 3.7V polymer lithium battery
Output voltage: The default is 5V, triggering fast charge after 4.5V ~ 12V according to the protocol.
Input rated current: 8A
Output current: 5V3A, 9V2A, 12V2A.Output current is adaptive.
Output power: up to 24W.
Support Agreement: QC2.0, QC3.0, Huawei FCP, DCP Agreement
Efficiency is up to 93% , with a typical value of 90% .
Module size: 47.5 (length) * 16.5 (width) * 8 (height) mm (including USB)
Module net weight: about 7 grams
The FP6601Q chip integrates the HiSilicon fast charge protocol and Qualcomm QC2.0/3.0USB interface fast charge protocol, which can quickly charge devices that support FCP and QC2.0/3.0 protocols.In addition to supporting the USB BC1.2 standard, it also supports FOR Apple and FOR Samsung devices.The chip can automatically detect whether the currently connected device is a QC2.0/3.0 or FCP device to automatically adjust the voltage.
feature of product:
1. Support FCP voltage and current output protocol.
2. Support Qualcomm QC2.0/3.0 classA 5V, 9V, 12V voltage output.
3. Automatically recognize FCP and QC2.0/3.0 fast charge protocol.
4. Support the protocol equipment of Chinese telecom enterprise YD/T 1591.
The TPS61088 is a high power density, fully integrated boost converter with an 11mΩ power switch and a 13mΩ rectifier switch that provides an efficient, small form factor solution for portable systems.With a wide input voltage range of 2.7V to 12V, the TPS61088 supports applications with single or two-cell Li-Ion batteries.The device features 10A switching current capability and is capable of delivering output voltages up to 12.6V.
The TPS61088 uses an adaptive constant off-time peak current control topology to regulate the output voltage.The TPS61088 operates in PWM mode under medium to heavy load conditions.Under light load conditions, the device can select one of the following two modes of operation via the MODE pin.One is a PFM mode that increases efficiency; the other is a forced PWM mode that avoids application problems due to low switching frequency.The switching frequency in PWM mode can be adjusted from 200kHz to 2.2MHz with an external resistor.The TPS61088 also implements a programmable soft start function and an adjustable switching peak current limit.In addition, the device is available with 13.2V output overvoltage protection, cycle-by-cycle overcurrent protection, and thermal shutdown protection.
The TPS61088 is available in a 20-pin 4.50mm × 3.50mm VQFN package.
Product application introduction:
This module can be applied to a single-cell lithium battery to 5V-12V output for general digital product charging, such as mobile phones, Ipad, MP3, PSP and so on.It can be used as a high current output mobile power source only by connecting the battery.It is also possible to supply power to the 5-12V product by setting the output voltage.

Downloader Cable Bluetooth 4.0 CC2540 zigbee CC2531 Sniffer USB dongle&BTool Programmer Wire Download Programming Connector

​
Standard: USB2.0 standard, backward compatible, in line with RS485 standard
 
Direction control: automatic data flow control technology, automatic identification and control data transfer direction
 
Baud Rate :300-9216000bps, automatically detect the serial data rate signal
 
Load capacity: supports multipoint, each converter allows connecting 32 RS485 interface device
 
Interface protection: TVS tube protection, USB self-recovery protection
 
Support Windows98/ME/2000/XP/WIN7/Vista, Linux, Mac
 
Supports devices with RS485 interface: surveillance cameras, video capture device, fingerprint attendance machine, PBX, CNC machine, SCM, etc.
 
 
New products, industrial grade USB to 485 modules, 485 chips to facilitate the replacement for the 485 chip hardware debug easy to burn out the case easier to use.
 
USB to 485 programs on the market to analyze the
 
Option One: CH341 485; shortcomings unstable and prone to cause your computer to black;
 
Option Two: PL2303 RS232 RS485; This program is first converted into the serial port using the PL2303, then turn into a serial port 485; advantage of low cost, there may be unstable shortcomings industrial applications, high speed does not fit.
 
Option Three: FT232 485; advantages: industrial-grade applications, speed, anti-jamming capabilities are very good, very suitable for industrial areas, the individual's application. Disadvantages: high cost.

 
BBS:http://mh.nodebb.com Product introduction: The INMP441 is a high performance, low power, digital output, omnidirectional MEMS microphone with bottom port. The The complete INMP441 solution consists of a MEMS sensor, signal conditioning, analog to digital converter, anti-aliasing filter, power management and industry standard 24-bit I2S interface. The I2S interface allows the INMP441 to be directly connected to digital processors such as DSPs and microcontrollers without the need for an audio codec for use in the system. The INMP441 has a high signal-to-noise ratio and is an excellent choice for near field applications. The INMP441 has a flat wideband frequency response that results in high definition of natural sound. Product Features: 1. Digital I2S interface with high precision 24-bit data 2. High signal to noise ratio is 61 dBA 3. High sensitivity - 26 dBFS 4. Stable frequency response from 60 Hz to 15 kHz 5. Low power consumption: low current consumption 1.4 mA 6. High PSR: -75 dBFS Interface definition: SCK: Serial data clock for I2S interface WS: Serial data word selection for I2S interface L/R: Left/Right channel selection. When set to low, the microphone outputs a signal on the left channel of the I2S frame. When set to high level, the microphone outputs signals on the right channel SD: Serial data output of the I2S interface. VCC: Input power, 1.8V to 3.3V. GND: power ground This product provides tutorials for using ESP32 modules with I2S functionality. Connect to ESP32: INMP441 ESP32 SCK >> GPIO14 SD >> GPIO32 WS >> GPIO15 L/R >> GND GND >> GND VDD >> VDD3.3 What is the difference between an omnidirectional microphone and a unidirectional microphone: First of all, I understand that the sound divergence is all-round. One person speaks and diverge in the air. As for how far it can pass, it depends on many factors. 1.directional microphone, the general pickup radius is very small, 30 cm is a big one, single use, put it on the mouth, the sound quality is very good, because it is not picked up again. The shape is generally goose neck wheat, a rod, a curved rod, to your mouth, directivity, just listen to your voice. With a single-point microphone, the sensitivity is limited to a certain range. Sensitivity is too high, causing sharp whistling, etc., involving many other devices As for why not make a big pickup radius, there is a reason. Later 2.omnidirectional microphone, the general pickup radius is very large, one meter two meters three meters five meters have, compared with ten centimeters, this level is very different, it is not just picking a person's voice, but Multiple people, five six, seven eight or even ten. Omnidirectional microphones are highly sensitive, The omnidirectional microphone pickup radius is too large, and it will also pick up more ambient noise, so the sound quality is not as good as the single-point microphone, unless you do a good noise reduction. There is definitely a difference between collective use and single-person service. But omnidirectional wheat has a benefit, the wiring is simple, not one by one. Suitable for small meetings, ad hoc meetings, some remote discussions, remote operations. 3.single-point wheat generally supports local amplification, Omnidirectional microphones generally do not support local amplification. It should be noted that because of such high sensitivity, the local amplification whistling is very scary, and the current technology is difficult to deal with.

10pcs IRF640N IRF640 IRF640NPBF Power MOSFET MOSFT 200V 18A 150mOhm 44.7nC TO-220 new original

Name: HMC5883L module (triaxial magnetic field module)
 
Model: GY-271
 
Using chips: HMC5883L
 
Power supply: 3-5v
 
Communication mode: IIC communication protocol
 
Measurement range: 1.3-8 Gauss

Product Description
Solderless breadboard 830
• Wire size: Suitable for 29-20 AWG wires
• Size: 16.5 x 5.5 x 0.85 cm
• Double sided tape on bottom. Can be fixed on a flat surface

Product Description
Solderless breadboard 830
• Wire size: Suitable for 29-20 AWG wires
• Size: 16.5 x 5.5 x 0.85 cm
• Double sided tape on bottom. Can be fixed on a flat surface

Product Description
Solderless breadboard 830
• Wire size: Suitable for 29-20 AWG wires
• Size: 16.5 x 5.5 x 0.85 cm
• Double sided tape on bottom. Can be fixed on a flat surface

Product Description
Solderless breadboard 830
• Wire size: Suitable for 29-20 AWG wires
• Size: 16.5 x 5.5 x 0.85 cm
• Double sided tape on bottom. Can be fixed on a flat surface

100W 5A USB Type-C PD Decoy Trigger Board 5V 9V 12V 15V 20V Output PD 2.0 3.0 Trigger Adapter Cable Connection Polling Detector
 
Description:
- It is a PD2.0/3.0 decoy.
- It is often used to use power banks with PD protocol such as power banks or chargers to trick the corresponding voltage to power notebooks and routers.
Features:
 1).It supports PD3.0 and PD2.0 voltage deception output,and the mode can be switched freely.
 2).It has a key lock function to prevent misoperation.
 3).It has an LED output indicator to show the working status.
 4).The parameters are automatically saved,and the last decoy setting is executed when the power is turned on again.
 5).Ultra-low power consumption,support 100W output.
Parameters:
 1).Product Name:PD2.0/3.0 Decoy
 2).Input Voltage:DC 5V
 3).Deceive Output Voltage:5V>9V>12V>15V>20V
 4).Maximum Output Voltage:20V
 5).Maximum Output Current:5A
 6).Work Temperature:-25℃~85℃
 7).Work Humidity:5% ~95% RH
 8).Size:44*20*15mm
Instructions for Use (must use a power supply with PD protocol):
  1). Press and hold the S- button,then insert the module into the power supply,and then reset to 5V output (">>" means power on).
  2). Press and hold the S button,and then insert the module into the power supply.At this time,switch whether to turn on the key lock and save the state after power-on.If the key lock is unlocked,it must be unlocked to adjust the voltage after power-on to prevent misoperation.
  3). After power on,press and hold S button without letting go,then press S- button,and unlock when there is a button lock.
  4). After powering on,press and hold S- button without letting go,then press S button to lock the button.
  5). Quick start:Plug the board into the PD power supply.At this time,the LED light indicates the current setting decoy voltage.If it is not on,it is the default 5V. Adjust the output voltage:The board is locked by default,and you need to unlock it first.The method is to press and hold S button and then press S- button.At this time,the unlocking is complete and you can release the button.Then click S button to increase the voltage or click S- button to decrease the voltage.
Instructions for Use of Test Function:
  1). Press S- button and S button at the same time and then power on,the module enters the test mode,and the output voltage will automatically cycle from 5V>9V>12V>15V>20V.The voltage change time can be adjusted by S button and S-button,in seconds.
  2). This function is a test function,the mode is not saved,and the switching time can be saved.
Interface Description:
  1. Type-C Interfeace Male:Type-C male connector:Connect PD power supply as input,which can input 20V 5A voltage and current.
  2. Type-C Interfeace Female:Used as an input to connect to a PD power supply,or as an output interface,which can output 20V 5A voltage and current.
  3. USB-A Female Interface:As an output interface,it can output 20V 3A voltage and current.
  4. Positive and negative wiring pads:as an output interface,it can output 20V 5A voltage and current.

100W 5A USB Type-C PD Decoy Trigger Board 5V 9V 12V 15V 20V Output PD 2.0 3.0 Trigger Adapter Cable Connection Polling Detector
 
Description:
- It is a PD2.0/3.0 decoy.
- It is often used to use power banks with PD protocol such as power banks or chargers to trick the corresponding voltage to power notebooks and routers.
Features:
 1).It supports PD3.0 and PD2.0 voltage deception output,and the mode can be switched freely.
 2).It has a key lock function to prevent misoperation.
 3).It has an LED output indicator to show the working status.
 4).The parameters are automatically saved,and the last decoy setting is executed when the power is turned on again.
 5).Ultra-low power consumption,support 100W output.
Parameters:
 1).Product Name:PD2.0/3.0 Decoy
 2).Input Voltage:DC 5V
 3).Deceive Output Voltage:5V>9V>12V>15V>20V
 4).Maximum Output Voltage:20V
 5).Maximum Output Current:5A
 6).Work Temperature:-25℃~85℃
 7).Work Humidity:5% ~95% RH
 8).Size:44*20*15mm
Instructions for Use (must use a power supply with PD protocol):
  1). Press and hold the S- button,then insert the module into the power supply,and then reset to 5V output (">>" means power on).
  2). Press and hold the S button,and then insert the module into the power supply.At this time,switch whether to turn on the key lock and save the state after power-on.If the key lock is unlocked,it must be unlocked to adjust the voltage after power-on to prevent misoperation.
  3). After power on,press and hold S button without letting go,then press S- button,and unlock when there is a button lock.
  4). After powering on,press and hold S- button without letting go,then press S button to lock the button.
  5). Quick start:Plug the board into the PD power supply.At this time,the LED light indicates the current setting decoy voltage.If it is not on,it is the default 5V. Adjust the output voltage:The board is locked by default,and you need to unlock it first.The method is to press and hold S button and then press S- button.At this time,the unlocking is complete and you can release the button.Then click S button to increase the voltage or click S- button to decrease the voltage.
Instructions for Use of Test Function:
  1). Press S- button and S button at the same time and then power on,the module enters the test mode,and the output voltage will automatically cycle from 5V>9V>12V>15V>20V.The voltage change time can be adjusted by S button and S-button,in seconds.
  2). This function is a test function,the mode is not saved,and the switching time can be saved.
Interface Description:
  1. Type-C Interfeace Male:Type-C male connector:Connect PD power supply as input,which can input 20V 5A voltage and current.
  2. Type-C Interfeace Female:Used as an input to connect to a PD power supply,or as an output interface,which can output 20V 5A voltage and current.
  3. USB-A Female Interface:As an output interface,it can output 20V 3A voltage and current.
  4. Positive and negative wiring pads:as an output interface,it can output 20V 5A voltage and current.

Bt201 Dual Mode 5.0 Bluetooth Lossless Audio Power Amplifier Board Module Tf Card U Disk Ble Spp Serial Port Transparent Trans
Function introduction:
1. Support Bluetooth audio, BLE data transmission, U disk playback, TF card playback. Support MP3/WAV/FLAC/APE format decoding
2. Optional: Serial AT command control. Support to modify the baud rate. Modify Bluetooth name, specify device playback, and mobile data passthrough
3. Support BLE and SPP dual-mode data transparent transmission, colleagues can also broadcast Bluetooth audio, no conflict
4. Support Bluetooth call, multi-button control. The last song, the next song. play / Pause. Adjust the volume and other simple functions.
5. Support to get the full file name of the play. Serial port specified path to play, loop or single play
6. Support 128KBS recording function, TF card or U disk. Recording delete playback, etc.
7. Rich usage information, reference PCB, use video tutorial, mobile phone transparent video tutorial. Serial AT video tutorial
8. Easily dock existing apps, or develop WeChat applets to implement mobile phone control
Color: green

    MPU-6500 module (three-axis gyroscope triaxial accelerometer)
 
Module Model: GY-6500
 
 
 
Use chip: MPU-6500
 
Power supply: 3-5v (internal low dropout regulator)
 
Communication: standard IIC / SPI communications protocol
 
-Chip 16bit AD converter, 16-bit data output
 
Gyroscopes range: ± 250 500 1000 2000 ° / s
 
Acceleration range: ± 2 ± 4 ± 8 ± 16g
 
The use of Immersion Gold PCB, machine welding process to ensure quality
 
2.54mm pitch
 
Module size 15mm * 25mm

 
Package Content:
1 Pcs x LM2596 Power Module

100PCS 1N4001 1N4004 1N4007 1N5408 1N5819 1N5822 FR107 FR207 DO-41 Rectifier Diode

Warm prompt: Dear buyer, Our cheapest transportation services Economic category logistics (SunYou Economic Air Mail ,China Post Ordinary Small Packet Plus ) can be traced only befor it arrive your country,please choose Standard category logistics if you want a full tracking info.
 The module is a low-power consumption character LCD Module with a built-in controller. 
The module can be easily interfaced with a MCU. 
Description: 
This LCD display module can be widely used in various fields 
Working Voltage: 5V 
Blue backlight, black characters 
Display Format: 8 characters x 2 lines 
Module Size (L x W x H): Approx. 2.28 x 1.26 x 0.4 inch / 5.8 x 3.2 x 1.05 cm 
Viewing Area: Approx. 1.5 x 0.63 inch / 3.8 x 1.6 cm 
Character Size: 2.96 x 5.56mm
 
 

Warm prompt: Dear buyer, Our cheapest transportation services Economic category logistics (SunYou Economic Air Mail ,China Post Ordinary Small Packet Plus ) can be traced only befor it arrive your country,please choose Standard category logistics if you want a full tracking info.
 The module is a low-power consumption character LCD Module with a built-in controller. 
The module can be easily interfaced with a MCU. 
Description: 
This LCD display module can be widely used in various fields 
Working Voltage: 5V 
Blue backlight, black characters 
Display Format: 8 characters x 2 lines 
Module Size (L x W x H): Approx. 2.28 x 1.26 x 0.4 inch / 5.8 x 3.2 x 1.05 cm 
Viewing Area: Approx. 1.5 x 0.63 inch / 3.8 x 1.6 cm 
Character Size: 2.96 x 5.56mm
 
 

Shipment is in loose parts! I need friends to solder it by myself.
Working voltage: DC9V Board size: 70*45mm
1. Product description
The infrared reversing radar is composed of multiple resonance circuits, infrared signal transmitting and receiving circuits, infrared signal amplification and voltage comparison circuits. It has the characteristics of simple circuit, low cost, and stable circuit operation. It is widely used in various ranging applications.
2. Installation and debugging and simple principle description
1. The infrared transmitting tube HF and the infrared receiving tube HJ have polarity (the long leg is positive), please do not install it wrongly, the installation direction can be upwards or sideways. RP1 adjusts the reflection distance and RP2 adjusts the sensitivity. You can try to turn on LED3 at a distance of 30cm, LED2 and LED3 at a distance of 20cm, and all on at a distance of 10cm. It is better to use white paper to block the reflection above the infrared sensor. This product is a teaching kit, not an industrial device. It is used for learning, teaching, and hobbies. Please know.
2. The time base circuit NE555 and surrounding components form a multivibrator to generate an infrared wave signal, which is output through IC2's third pin and drives the infrared transmitter tube HF to emit an infrared signal.

35 w mono digital amplifier module
1. The Operating voltage: 10 to 30 VDC
2. It use 24 v 2 a power supply voltage output
3. It speaker impedance: 8 ohms Best (4 ohms 6 ohms also be 2)
Specification:
Color: As the picture shows
Size: Approx. 43 * 31 mm
The Original Box: No

The color is sent at random

CP2102 module USB to TTL serial UART STC download cable PL2303 Super Brush line upgrade for arduino
 
1.PCB size: 26.5mm * 15.6mm
2.PCB Color: Red
3. Weight: 4g
4. Using the new chip CP2102
5. with resettable fuse. In the event of accidental short-circuit can effectively protect your device and computer USB port to download
6. With three LEDs: power indicator, the indicator data reception, data transmission indicator, work status at a glance
7. 3.3V and 5V with two power output
8. all the useful lead pins
9. with reset signal output can be directly Pro mini and other Arduino board to download!
10. Compatible Operating Systems:
-Windows 98 / Me / 2000 / XP / 7
-MAC OS-9
-MAC OS
-X-Windows CE
-Linux 2.40 or later

 
Introduction without remote control:
Operation instructions
 
After switching on the power supply, the blue indicator flashes and enters the Bluetooth mode; after broadcasting the "prompt sound", it enters the matching mode and waits for matching; after broadcasting the "prompt sound", the mobile Bluetooth searches for "XY-WRBT" (the name of the power amplifier board device), clicks on the "XY-WRBT" connection, and plays the "prompt sound" after the connection is successful, and when the indicator light is long, the mobile music can be played. When playing music, the indicator light flickers slowly; after Bluetooth disconnects, the amplifier board prepares for the next pairing, and plays the "prompt tone" and enters the pairing mode to wait for the pairing.
 
Cautions for Power Supply with 3.7V Lithium Battery
 
1. When powered by batteries, the battery voltage is less than 3.3V decoder board automatically shuts down, and the contacts are switched on/off for 2 seconds after re-energizing or full charging.
 
2. When using batteries to supply power, if the voltage of batteries is too low, there may be "nourishing" noise. In this case, the batteries need to be charged.
 
3. Because there is no charge protection circuit for lithium batteries on decoder board, it is recommended to use lithium batteries with protection board.
 
4. If your rechargeable battery supports Micro USB charging directly, you can use Micro USB charging directly to the battery.
 
Instructions with remote control:
 
Product name

Bluetooth Decoder
Product model

XY-WRBT
Working voltage

3.7~24VDC
Bluetooth version

5.0
Transmission distance

15m (visible and unshielded)
Signal-to-noise ratio

≥90dB
Distortion

≤-70dB
Number of vocal tract

Dual Channel (Stereo)
Audio interface

3.5mm audio interface
Modular protection mechanism

Back-connection protection of power supply
 
 
1. Micro-USB mobile phone charger, 3.7-4.2V lithium battery and 3.7-24V DC power supply can be used for power supply.
2. Short "on/off contact" 2 seconds can set decoder board on/off, for battery power supply, when not in use, power-saving, convenient refitting.

Notice: The new tracking number for China Post Ordinary Small Packet Plus can be traced only befor it arrive the airport of your country,please choose China Post Air Mail if you want a full tracking info.
 
Tracking info of  China Post Ordinary Small Packet Plus can be check here: www.17track.net/
 
L293D is a monolithic integrated, high voltage, high current, 4-channel driver.Basically this means using this chip you can use DC motors and power supplies of up to 36 Volts, thats some pretty big motors and the chip can supply a maximum current of 600mA per channel, the L293D chip is also what's known as a type of H-Bridge. The H-Bridge is typically an electrical circuit that enables a voltage to be applied across a load in either direction to an output, e.g. motor.
- 2 interface for 5V Servo connected to For high-resolution dedicated timer - no jitter!
- Can drive 4 DC motors or 2 stepper motors or 2 Servo
- Up to 4 bi-directional DC motors with individual 8-bit speed selection
- Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping.
- 4 H-Bridges: per bridge provides 0.6A (1.2A peak current) with thermal protection, can run motors on 4.5V to 36V DC
- Pull down resistors keep motors disabled during power-up
- reset button
- 2 external terminal power interface, for seperate logic/motor supplies
- Tested compatible for Mega, Diecimila & Duemilanove

Description
1.VCC: Power supply, must be between 2.0-3.6V
2.CE: Input Module Control Pin, see nRF24L01P Datasheet
3. CSN: Input module chip select pin for starting an SPI communication
4.SCK: Input Module SPI Bus Clock
5. MOSI: Input Module SPI Data Input Pin
6.MISO: Output Module SPI Data Output Pin
7.IRQ: Output module interrupt signal output, active low
8.GND: Ground wire, connected to the power reference ground
9.GND: Ground wire, can be used for patch mounting
10.GND: Ground wire, can be used for patch mounting

Description
1.VCC: Power supply, must be between 2.0-3.6V
2.CE: Input Module Control Pin, see nRF24L01P Datasheet
3. CSN: Input module chip select pin for starting an SPI communication
4.SCK: Input Module SPI Bus Clock
5. MOSI: Input Module SPI Data Input Pin
6.MISO: Output Module SPI Data Output Pin
7.IRQ: Output module interrupt signal output, active low
8.GND: Ground wire, connected to the power reference ground
9.GND: Ground wire, can be used for patch mounting
10.GND: Ground wire, can be used for patch mounting

1.Description:
USB boost/buck power supply module, powered by USB, adjust potentiometer to get the required voltage.
2.Features:
1>.One button to turn off the output;
2>.Supply ON/OFF display screen;
3>.Support low power mode;
4>.Support sleep mode;
5>.Support both standard USB and Micro USB and pads input voltage;
6>.Potentiometer with rotating handle.
3.Parameters:
1>.Input voltage: DC 3.5-12V;
2>.Output voltage:DC 1.2-24V;
3>.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

USB Mini Humidifier DIY Kits Mist Maker and Driver Circuit Board Fogger Atomization Film Atomizer Sheet Mini Oscillating
Description:
5V USB ultrasonic mist maker driver board and atomizer plate.
Low driving voltage, low power, low impedance, stable waveform, high conversion efficiency.
Round ring atomizer plate, middle spray, 5um ultra-fine spray aperture, 740 ultra-dense spray holes.
Surface of the atomizing sheet adopts an oxidation-resistant silver layer to protect the coating process, long life.
Adopt environmentally friendly electronic components.
Specifications: 
Product name: Humidifier driver board
Color: As show
Voltage: DV 5V
Current: 300mA
Power: 2W
Frequency: 110KHz
Steel sheet diameter: About 16 mm
Silicone ring outer diameter: About 20 mm
Wire length: About 8 cm
Size: approx. 46 *20*17mm/1.81*0.79*0.67"
 
 
 

2.4G 1100 Meters Long Distance  NRF24L01 PA LNA Wireless Module with Antenna
 
Product Description:
 
Voltage: 3-3.6V
Max output power:  20 dBm
Working current in transmit mode: 115mA
Working current in receiver mode: 45mA
Current in    mode: 4.2uA
Operating temperature: -20-70 degree
Receiver sensitivity: -92dBm in 2Mbps mode, -95dBm in 1Mbps mode, -104dBm in 250kbps mode
PA growth: 20dB
LAN growth: 10dB
LAN noise figure: 2.6dB
Antenna growth: 2dBI
2M rate: 520m
 
Package Include:
 
1 x NRF24L01 PA LNA Wireless Module
1 x Antenna  
 

Notice: The new tracking number for China Post Ordinary Small Packet Plus can be traced only befor it arrive the airport of your country,please choose China Post Air Mail if you want a full tracking info.
 
Tracking info of  China Post Ordinary Small Packet Plus can be check here: www.17track.net/en
 
Features:
Brand new and high quality.
Connect this device with lamp or home appliance in a series connection, then rotate the knob for dimming, speed, voltage, temperature control.
Applicable appliance: electric furnace, water heater, lamps, small motor, electric iron etc.
Input voltage: 220V.
Maximum power: 2000W.
Adjustable voltage: 50-220V AC.
Material: plastic, metal.
Size: 4.8cm x 5.5cm x 2.7cm.

Highlights:
Two independent PWM generators can set the frequency, duty cycle;
The wide frequency range, high accuracy;
Can serial communication.
First, the module description:
Frequency is divided into three ranges:
XXX (no decimal point): the smallest unit is 1Hz, the range 1Hz ~ 999Hz;
XX.X (decimal point in ten): The minimum unit is 0.1Khz; the range of 0.1KHz ~ 99.9KHz
X.X.X. (there are three decimal point): the smallest unit is 1Khz; the range 1KHz ~ 150KHz
Frequency display example:
"100" indicates that the PWM output pulse of 100Hz;
"54.1" indicates that the PWM output pulse of 54.1KHz;
"1.2.4." Indicates that the PWM pulse output 124KHz
Duty Cycle in the range: 0 to 100;
Three frequencies duty cycle is the same, all the parameters non-volatile.
Second, the module parameters:
Working voltage: 5--30V, support micro USB 5.0V power supply;
Frequency range: 1Hz ~ 150KHz;
The frequency accuracy: ± 2% ;
Output Current: <30mA;
Output amplitude: Default 5Vp-p (settable);
Operating temperature range: -30 ~ 70 °.
Third, the parameter settings:
Module has three buttons [Set], [Up], [Down];
Press [Set] key to switch the display four parameters (FR1: PWM1 frequency; dU1: PWM1 duty cycle; FR2: frequency of PWM2; dU2: PWM2 duty cycle), before the handover parameters, there will be corresponding parameter name flash.
Press [Up], [Down] keys to modify the current parameter value (long press can quickly add or subtract fast).
Two PWM each have three preset frequency, the frequency display interface, long press [SET] key to switch between three types of frequencies, three kinds of frequency duty cycle is the same value. (XXX: range 1Hz ~ 999Hz; XX.X: range 0.1Khz ~ 99.9Khz; X.X.X .: range 1Khz ~ 150Khz,).
Fourth, the scope:
As square wave signal generator which generates a square wave signal;
to provide a signal to the stepping motor driver;
Adjustable pulse generation for chip use;
produce variable pulse signal, the control-related circuit (PWM dimming, speed).
Fifth, the serial control
Baud rate: 9600 bps
Data bits: 8
Stop bits: 1
Parity bit: none
Flow control: none
1, set the PWM frequency
"S1FXXXT": setting PWM1 frequency of XXX HZ (001 ~ 999)
"S1FXX.XT": set the frequency of PWM1 XX.X KHZ (00.1 ~ 99.9)
"S1F: X.X.X.T": setting PWM1 frequency of XXX KHZ (0.0.1 ~ 1.5.0..)
'S1': PWM1
'S2': PWM2
'F': Frequency
'D': Duty Cycle
'T' is the end flag
Set the PWM duty cycle
"S1DXXXT": setting PWM1 duty cycle XXX; (001 ~ 100)
"S2DXXXT": set PWM2 duty cycle XXX; (001 ~ 100)
Setting successful return: DOWN;

Dual USB 5V 1A 2.1A Mobile Power Bank 18650 Battery Charger PCB Power Module Accessories For Phone DIY LED LCD Module Board

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
 

Description: You've always wanted to output analog voltages from a microcontroller, the MCP4725 is the DAC that will let you do it! The CJMCU-MCP4725 is an I2C controlled Digital-to-Analog converter (DAC).  Digital to analog converters are great for sound generation, musical instruments, and many other creative projects!
This version of the CJMCU-MCP4725 Breakout fixes a few issues with the board including the IC footprint, the I2C pinout, changes the overall board dimensions to better fit your projects, and a few more minor tweaks. This board breaks out each pin you will need to access and use the MCP4725 including GND and Signal OUT pins for connecting to an oscilloscope or any other device you need to hook up to the board. Also on board are SCL, SDA, VCC, and another GND for your basic I2C pinout. Additionally, if you are looking to have more than one MCP4725 on a bus, the pull-up resistors on this board can be disabled just check the Hookup Guide in the Documents section below for instructions and tips on doing this.
Features:
12-bit resolution
I2C Interface (Standard, Fast, and High-Speed supported)
Small package
2.7V to 5.5V supply
Internal EEPROM to store settings

product information
 
Name: LCD module
 
Model: GMG12864-06D
 
Dot matrix: 12864
 
Dimensions: 61.8 * 45.8 * 6.8
 
Window size: 58 * 28
 
Driver IC: ST7565R
 
IC: 20L16S1Y Simplified Chinese
 
Temperature: -20 degrees 70 degrees
 
Voltage: 3.3V
 
Interface mode: SPI interface

product information
 
Name: LCD module
 
Model: GMG12864-06D
 
Dot matrix: 12864
 
Dimensions: 61.8 * 45.8 * 6.8
 
Window size: 58 * 28
 
Driver IC: ST7565R
 
IC: 20L16S1Y Simplified Chinese
 
Temperature: -20 degrees 70 degrees
 
Voltage: 3.3V
 
Interface mode: SPI interface

product information
 
Name: LCD module
 
Model: GMG12864-06D
 
Dot matrix: 12864
 
Dimensions: 61.8 * 45.8 * 6.8
 
Window size: 58 * 28
 
Driver IC: ST7565R
 
IC: 20L16S1Y Simplified Chinese
 
Temperature: -20 degrees 70 degrees
 
Voltage: 3.3V
 
Interface mode: SPI interface

 
Shapes: round
2. Emitting color: Ultra Voilet(UV) LED
3. Dominant Wavelength:395-410nm
4. Lens colors: water clear
5. Life Span: 100,000 Hours
6. With RoHS & CE Approved
7. Chip: Taiwan
8. Luminous Flux: 1000-1200MCD
9. Beam angle: 20 degrees
10. Forward Voltage: 3.2-3.8V
11.Forward Current: 20mA