Huzal, kábel és vezeték

MEGA2560
   CH340G Replace ATMEGA16U2     
   Microcontroller:ATmega2560     
   Operating Voltage:5V     
   Input Voltage (recommended):7-12V     
   Input Voltage (limits):6-20V     
   Digital I/O Pins:54 (of which 15 provide PWM output)     
   Analog Input Pins:16     
   DC Current per I/O Pin:40 mA     
   DC Current for 3.3V Pin:50 mA     
   Flash Memory:256 KB of which 8 KB used by bootloader     
   SRAM:8 KB     
   EEPROM:4 KB     
   Clock Speed:16 MHz
MEGA2560 PRO
Embed version of Mega 2560 CH340G/ATmega2560 - compatible with Arduino Mega 2560 board. Built on the Atmel ATmega2560 microcontroller and USB-UART interface chip CH340G.
Board have compact size 38x55mm. It is good solution, to make your final project on solder proto-board.
Board for functionality similar to the Arduino Mega 2560. It is embed board, but the same stable, and uses the original chips ATmega2560 (16 MHz).
The board used the chip CH340G as converter UART-USB. When you work in the frequency 12Mhz, giving a stable result of data exchange (need install drivers to computer).
Mega PRO (Embed) 2560 CH340G / ATmega2560 - connects to the computer via microUSB cable (used for almost all Android smartphones).
You can supply power to board through the MicroUSB connector or to power pinheaders. The voltage regulator (LDO) can deal with incoming voltage from 6V to 9V (peack 18V) DC. Output current for 5V - about 800mA, for 3.3V - about 800mA (Please note that the higher the input voltage the lower the outgoing current). That will provide a reliable power most of your initial projects. 
Expansion Board DIY Kit Compatible With MEGA2560
Prototype Screw/Terminal Block Shield Board Kit For ArduinoMEGA-2560 R3.
The Kit includePrototype PCB, Terminal Blocks, Female Header Sockets.
Unassembled, variety mount methods, you can make flexible use.
PCB:
        FR-4 fiber glass PCB, dual copper layers, size 120mm x 78mm.
        Pads grid / pitch 2.54mm / 0.1", hole diameter 0.8mm.
        Terminal block pitch 3.5mm / 0.138", hole diameter 1.2mm.
Terminal Block:
        Pitch 3.5mm / 0.138" mini terminal blocks, total 84 pins(3pole x24pcs, 2pole x6pcs ).
        Wire range 26~16AWG, strip length 5mm, screws M2 steel, pin header and cage brass.
Female Header Socket:
        Pitch 0.1"/2.54mm, pin length 15mm / 0.59"
        Single row 10pin x1pcs, singal row 8pin x 5pcs, dual row 18pin x1pcs.

Product Introduction:
 
1.Intelligent electricity quantity display board;slightly push trigger switch,it will auto power off after 3 seconds display
2.Static power consumption 2.3MA,and it can be disregarded
3.Plug-in indicator light color:25% red,other 3 pcs are green
4.Application Fields:battery electricity quantity detecting;only needs to connect seperately battery's positive and negative with electricity quantity board's positive and negative;slightly push trigger switch,then it can be able to detect current electricity quantity.4 LEDs will divide battery comprehensive capacity into 4 phases;slightly push the switch,electricity quantity will be shown
  electricity display indication:25% first light is on(voltage:6.6V);50% second light is on (voltage:7V);75% third light is on (voltage:7.5V);100% fourth light is on (voltage:8V)
5.Size:44*9*7.5mm

Features:
Battery protection(Over charge or Over discharge)
Micro USB port Input
Type-A USB Output
0.5A current charging
1 switch control USB output
5~8V Input Voltage
3V & 1A Output
5V & 2A Output
LED indicate(Green means full,Red means charging)
3V output port x3
5V output port x3
Be careful of " " and "-", You should follow the direction of " ""-" on the PCB.
If you put wrong direction, charging chip will be destroyed.
This product does not include 18650 battery
Size: 9.8x2.9cm/3.86x1.14inch
Quantity: 1 Set
1.Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid.
2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
 
 

Features:
Battery protection(Over charge or Over discharge)
Micro USB port Input
Type-A USB Output
0.5A current charging
1 switch control USB output
5~8V Input Voltage
3V & 1A Output
5V & 2A Output
LED indicate(Green means full,Red means charging)
3V output port x3
5V output port x3
Be careful of " " and "-", You should follow the direction of " ""-" on the PCB.
If you put wrong direction, charging chip will be destroyed.
This product does not include 18650 battery
Size: 9.8x2.9cm/3.86x1.14inch
Quantity: 1 Set
1.Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid.
2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
 
 

Description:
1, Size: 37mmX45mmX8mm
2, the main chip: HB100
3, work voltage: DC 5V
4,HB100 is the use of microwave Doppler radar module (Doppler Radar) design principles of the microwave detector moving objects, mainly used in automatic door control switches, security systems, ATM ATM automated video control systems, automatic train signal, etc. place. HB100 is the standard 10.525GHz microwave Doppler radar detector, the detection method compared with other detection methods have the following advantages: 1, non-contact detection; 2, independent of temperature, humidity, noise, air, dust, light other effects, suitable for harsh environments; 3, anti-RF interference ability; 4, the output power is small, constitute a hazard to humans; 5, distance: more than 20 meters detection range.
5,Doppler Principle: Doppler theory based on time, when radio waves encounter an object in the moving process will be reflected when the waves, the frequency of the reflected wave will hit the object with the movement to change state. If the radio waves encounter an object position is fixed, then the reflected wave frequency and transmitting frequency waves should be equal. If the object moves toward the launch, then the reflected waves will be compressed, that will increase the frequency of the reflected wave; otherwise the reflected wave's frequency decreases.
Feature
 
Launch:
1 transmission frequency: 10.525 GHz
2 Frequency Setting Accuracy: 3MHz
3 Output power (minimum): 13dBm EIRP
4 Operating voltage: 5V ± 0.25V
5 Operating Current (CW): 60mA max., 37mA typical
6 harmonic emission: <-10dBm
7 Pulse mode:
8 average current (5% DC): 2mA typ.
9 Pulse Width (Min.): 5uSec
10 load cycles (Min.): 1%
Receiver:
 
1 Sensitivity (10dB S / N ratio) 3Hz to 80Hz band width:-86dBm
3Hz to 80Hz bandwidth of clutter 10uV
2 Antenna Gain: 8dBi
3 Vertical 3dB beamwidth: 36 degrees
4 horizontal 3dB beam width: 72 degrees
5 Weight: 8 grams

DHT21/AM2301 100% New Digital-output relative humidity & temperature sensor/module,connect with single-bus-line Sensor AM2301
AM2320B Digital Temperature and Humidity Sensor Module SHT21 AM2301 Digital Sensor for Arduino
Description:
1.4-pin package
2.Ultra-low power
3.No additional components
4.Excellent long-term stability
5.All calibration, digital output
6.Completely interchangeable
7.Long distance signal transmission
8.Relative humidity and temperature measurement
Specifications:
1.Type: AM2320B temperature and humidity sensor single bus / IIC compatible interface for AM2301 \ SHT21
2.Accuracy resolution: 0.1
3.Measurement range: 0-100% RH
4.Temperature measurement range: -40° ~ 80°
5.Humidity measurement precision: ±3% RH
6.Temperature measurement precision: ±0.5°

WEMOS Lite V1.0.0 Wifi Bluetooth Development Board Antenna ESP32 ESP-32 REV1 CH340G MicroPython 4MB Micro USB For Arduino
 
Power supply: 2.2V to 3.6V
Operating voltage: 3.3V
Logic level: 3.3V
Mounting holes diameter: 2 holes, 3mm diameter
Integrated 802.11 BGN WiFi transceiver
Integrated dual-mode Bluetooth
4MB Flash Memory
Maximum serial baud rate: 256000bps
Dimensions: 50mm x 25mm (1.97in x 0.98in)

Description:
 
     Two-axis key joystick sensor module by the use of PS2 rocker potentiometer, with (X, Y) 2-axis analog output, (Z) 1 button digital output. With the Arduino sensor expansion board can produce remote control and other interactive works. In addition, this product in order to allow customers to more easily with the arduino expansion board and other standard interfaces, in the design of the X, Y, Z axis of the circuit are separate leads, the user can use 3-pin ARDUINO special line really plug into the expansion board .
 
Product performance:
 
1. Input voltage range: DC 3.3V to 5V
2. Output signal: the module special two-way analog output and a digital output interface, the output value corresponding to (X, Y) biaxial offset, the type of analog; keys that the user press the Z axis, Its type is digital switch.
3. Arduino controller can be programmed, the sensor expansion board plug, complete with creative remote interactive works.
4. Cross joystick is a bi-directional 10K resistor, with the rocker in different directions, the tap resistance with the change. This module uses 5V power supply, the original state of X, Y read voltage of 2.5V or so, when pressed with the arrow direction, the read voltage value increases with the maximum to 5V; arrows in the opposite direction to press, read the voltage decreases , The minimum is 0V.
 
Tutorial:
 
In the introduction of how to use, we first look at how it works, which we use it very helpful, there is a function of the following diagram:
 
 
 
    In fact, this module is a potentiometer, x, y-dimensional data output port is read out the analog voltage. This figure does not draw the above z-dimensional data output, z-dimensional output only 0 and 1, can be achieved by a button. All in all, it is a combination of potentiometer and button. In the Arduino use it, x, y dimension we received two analog ports to read their values, while the z-dimensional we are connected to the digital port, connected to the power and ground.
 
test program:
 
Int JoyStick_X = 0; // x
 
Int JoyStick_Y = 1; // y
 
Int JoyStick_Z = 3; // key
 
Void setup () {pinMode (JoyStick_X, INPUT);
 
 PinMode (JoyStick_Y, INPUT);
 
PinMode (JoyStick_Z, INPUT);
 
Serial.begin (9600); // 9600 bps}
 
Y = analogRead (JoyStick_Y); z = digitalRead (JoyStick_Z); void loop () {int x, y, z;
 
Serial.print (x, DEC); Serial.print ( ",");
 
Serial.print (y, DEC); Serial.print ( ",");
 
Serial.println (z, DEC);

RP2040 Micro
The Raspberry Pi Pico is a microcontroller board based on the Raspberry Pi RP2040 microcontroller chip. It has been designed to be a low-cost, high-performance microcontroller board with flexible digital interfaces. The Raspberry Pi Pico features two ARM Cortex-M0 cores run up to 133MHz; 256KB RAM; 30 GPIO pins; and a broad range of interfacing options. This is paired with 2MB of onboard QSPI Flash memory for code and data storage.
In addition to powerful hardware resources, Pico has rich and complete software support and community resources. It comes with a complete Rasberry Pi official C/C SDK, Micropython SDK. Just click "https://pico.raspberrypi.org/getting-started" to get started with Raspberry Pi Pico.
Pico has been designed to use either soldered 0.1" pin-headers (it is one 0.1" pitch wider than a standard 40-pin DIP package) or can be used as a surface-mountable 'module', as the user IO pins are also castellated. There are SMT pads underneath the USB connector and BOOTSEL button, which allow these signals to be accessed if used as a reflow soldered SMT module.
Specification:
• RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
• Dual-core Arm Cortex M0 processor, flexible clock running up to 133 MHz
• 264KB of SRAM, and 2MB of on-board Flash memory
• Castellated module allows soldering direct to carrier boards
• USB 1.1 with device and host support
• Low-power sleep and dormant modes
• Drag-and-drop programming using mass storage over USB
• 26 × multi-function GPIO pins
• 2 × SPI, 2 × I2C, 2 × UART, 3 × 12-bit ADC, 16 × controllable PWM channels
• Accurate clock and timer on-chip
• Temperature sensor
• Accelerated floating-point libraries on-chip
• 8 × Programmable I/O (PIO) state machines for custom peripheral support
RP2040 TYPE-C - 4MB/16MB
Update firmware operation process:
1. First, insert the TYPE-C interface USB cable, and connect the other end to the computer;
2. Long press the BOOT button ;
3. Press the RST button;
4. Release the BOOT button after 1 second;
5. The computer will automatically recognize it as a removable hard disk;
6. Copy the file to be downloaded (burned) to the removable hard disk that appears, and the core board will restart automatically
 

RP2040 Micro
The Raspberry Pi Pico is a microcontroller board based on the Raspberry Pi RP2040 microcontroller chip. It has been designed to be a low-cost, high-performance microcontroller board with flexible digital interfaces. The Raspberry Pi Pico features two ARM Cortex-M0 cores run up to 133MHz; 256KB RAM; 30 GPIO pins; and a broad range of interfacing options. This is paired with 2MB of onboard QSPI Flash memory for code and data storage.
In addition to powerful hardware resources, Pico has rich and complete software support and community resources. It comes with a complete Rasberry Pi official C/C SDK, Micropython SDK. Just click "https://pico.raspberrypi.org/getting-started" to get started with Raspberry Pi Pico.
Pico has been designed to use either soldered 0.1" pin-headers (it is one 0.1" pitch wider than a standard 40-pin DIP package) or can be used as a surface-mountable 'module', as the user IO pins are also castellated. There are SMT pads underneath the USB connector and BOOTSEL button, which allow these signals to be accessed if used as a reflow soldered SMT module.
Specification:
• RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
• Dual-core Arm Cortex M0 processor, flexible clock running up to 133 MHz
• 264KB of SRAM, and 2MB of on-board Flash memory
• Castellated module allows soldering direct to carrier boards
• USB 1.1 with device and host support
• Low-power sleep and dormant modes
• Drag-and-drop programming using mass storage over USB
• 26 × multi-function GPIO pins
• 2 × SPI, 2 × I2C, 2 × UART, 3 × 12-bit ADC, 16 × controllable PWM channels
• Accurate clock and timer on-chip
• Temperature sensor
• Accelerated floating-point libraries on-chip
• 8 × Programmable I/O (PIO) state machines for custom peripheral support
RP2040 TYPE-C - 4MB/16MB
Update firmware operation process:
1. First, insert the TYPE-C interface USB cable, and connect the other end to the computer;
2. Long press the BOOT button ;
3. Press the RST button;
4. Release the BOOT button after 1 second;
5. The computer will automatically recognize it as a removable hard disk;
6. Copy the file to be downloaded (burned) to the removable hard disk that appears, and the core board will restart automatically
 

RP2040 Micro
The Raspberry Pi Pico is a microcontroller board based on the Raspberry Pi RP2040 microcontroller chip. It has been designed to be a low-cost, high-performance microcontroller board with flexible digital interfaces. The Raspberry Pi Pico features two ARM Cortex-M0 cores run up to 133MHz; 256KB RAM; 30 GPIO pins; and a broad range of interfacing options. This is paired with 2MB of onboard QSPI Flash memory for code and data storage.
In addition to powerful hardware resources, Pico has rich and complete software support and community resources. It comes with a complete Rasberry Pi official C/C SDK, Micropython SDK. Just click "https://pico.raspberrypi.org/getting-started" to get started with Raspberry Pi Pico.
Pico has been designed to use either soldered 0.1" pin-headers (it is one 0.1" pitch wider than a standard 40-pin DIP package) or can be used as a surface-mountable 'module', as the user IO pins are also castellated. There are SMT pads underneath the USB connector and BOOTSEL button, which allow these signals to be accessed if used as a reflow soldered SMT module.
Specification:
• RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
• Dual-core Arm Cortex M0 processor, flexible clock running up to 133 MHz
• 264KB of SRAM, and 2MB of on-board Flash memory
• Castellated module allows soldering direct to carrier boards
• USB 1.1 with device and host support
• Low-power sleep and dormant modes
• Drag-and-drop programming using mass storage over USB
• 26 × multi-function GPIO pins
• 2 × SPI, 2 × I2C, 2 × UART, 3 × 12-bit ADC, 16 × controllable PWM channels
• Accurate clock and timer on-chip
• Temperature sensor
• Accelerated floating-point libraries on-chip
• 8 × Programmable I/O (PIO) state machines for custom peripheral support
RP2040 TYPE-C - 4MB/16MB
Update firmware operation process:
1. First, insert the TYPE-C interface USB cable, and connect the other end to the computer;
2. Long press the BOOT button ;
3. Press the RST button;
4. Release the BOOT button after 1 second;
5. The computer will automatically recognize it as a removable hard disk;
6. Copy the file to be downloaded (burned) to the removable hard disk that appears, and the core board will restart automatically
 

Product model: XH-A901
 
Input voltage: AC12V 
 
Number of channels: two channels
 
Size: 96*39*16MM
 
Installation aperture: 3MM
 
Installation hole distance: 89.3*32.3MM
Chip:Two NE5532 
 
Package include :
1pcs XH-A901 NE5532 Tone Board 
1pcs 3P Audio cable
 
 
 

XH-W3001
Output Type: Direct Output
Output capacity:10A max
Power Supply: AC110-220V
Temperature Measurement Range: -50° C~110° C
Temperature Control Range: -50° C~110° C
Temperature Control Precision: 0.1° C
Input measurement: NTC10K waterproof probe L = 1 meter waterproof
 
 
How to set
1. Press up button show the starting temperature.
2. Long press UP button the temperature display Flashing , Press the UP or Down button.
3. Set the start temperature value.
4. Press Down button show the Stop temperature.
5. Long press Down button the temperature display Flashing , press the UP or Down.
6. Button Set the stop temperature value

CH340G Replace FT232RL
8 analog inputs ports:A0 ~ A7
14 Digital input / output ports:TX,RX,D2 ~ D13
6 PWM ports:D3, D5, D6, D9, D10, D11
1 pairs of TTL level serial transceiver ports RX / TX
Using Atmel Atmega328P-AU MCU
There is bootloader installed in it
Support USB download and Power
Support for external 5V ~ 12V DC power supply
Support power supply by 9V battery
Support ISP download  

CH340G Replace FT232RL
8 analog inputs ports:A0 ~ A7
14 Digital input / output ports:TX,RX,D2 ~ D13
6 PWM ports:D3, D5, D6, D9, D10, D11
1 pairs of TTL level serial transceiver ports RX / TX
Using Atmel Atmega328P-AU MCU
There is bootloader installed in it
Support USB download and Power
Support for external 5V ~ 12V DC power supply
Support power supply by 9V battery
Support ISP download  

Prototype Screw/Terminal Block Shield Board Kit For ArduinoMEGA-2560 R3.
 
The Kit includePrototype PCB, Terminal Blocks, Female Header Sockets.
Unassembled, variety mount methods, you can make flexible use.
PCB: 
        FR-4 fiber glass PCB, dual copper layers, size 120mm x 78mm.
        Pads grid / pitch 2.54mm / 0.1", hole diameter 0.8mm.
        Terminal block pitch 3.5mm / 0.138", hole diameter 1.2mm.
Terminal Block:
        Pitch 3.5mm / 0.138" mini terminal blocks, total 84 pins(3pole x24pcs, 2pole x6pcs ).
        Wire range 26~16AWG, strip length 5mm, screws M2 steel, pin header and cage brass.
Female Header Socket:
        Pitch 0.1"/2.54mm, pin length 15mm / 0.59"
        Single row 10pin x1pcs, singal row 8pin x 5pcs, dual row 18pin x1pcs.
 
 
 

Prototype Screw/Terminal Block Shield Board Kit For ArduinoMEGA-2560 R3.
 
The Kit includePrototype PCB, Terminal Blocks, Female Header Sockets.
Unassembled, variety mount methods, you can make flexible use.
PCB: 
        FR-4 fiber glass PCB, dual copper layers, size 120mm x 78mm.
        Pads grid / pitch 2.54mm / 0.1", hole diameter 0.8mm.
        Terminal block pitch 3.5mm / 0.138", hole diameter 1.2mm.
Terminal Block:
        Pitch 3.5mm / 0.138" mini terminal blocks, total 84 pins(3pole x24pcs, 2pole x6pcs ).
        Wire range 26~16AWG, strip length 5mm, screws M2 steel, pin header and cage brass.
Female Header Socket:
        Pitch 0.1"/2.54mm, pin length 15mm / 0.59"
        Single row 10pin x1pcs, singal row 8pin x 5pcs, dual row 18pin x1pcs.
 
 
 

BBS:   http://forum.mhetlive.com/topic/47/mh-et-live-tiny8-16-0mhz 
 
The MH-ET LIVE Tiny88(16.0Mhz) based microcontroller development board similar  to the Arduino line, only cheaper, smaller, and a bit less powerful. With the ability to use the familiar  Arduino IDE the MH-ET LIVE Tiny88(16.0Mhz) is a great board to jump into electronics, or perfect for when an other board is too big or too much.The MH-ET LIVE Tiny88(16.0Mhz) is shipped fully assembled except for the headersincluded and easy to solder them by yourself.
Specs:
 
Support for the Arduino IDE 1.0 (OSX/Win/Linux)
1. Power via USB or External Source - 5v or 7-35v (12v or less recommended,
automatic selection)
2. On-board 500ma 5V Regulator
3. Built-in USB
4.  26 I/O Pins (2 are used for USB only if your program actively communicates over  USB, otherwise you can use all 6 even if you are programming via USB)
5. 8k Flash Memory (about 6k after bootloader)
6. I2C and SPI
7. 26-PWM (26 pins with Software PWM,only two(D9,D10) with hardware PWM )
8.  ADC on 8 pins
9.  Power LED and Test/Status LED
10. Size(mm):44.5x18.3x3

 
Red borad
 
1.Size:15*11mm
2.Power:2.5-5.5V
Trigger setting mode: (1- > Short ; 0- > No Short)
AB=00:No-lock High TTL level ouput;
AB=01:Self-lock High TTL level ouput;
AB=10:No-lock Low TTL level ouput;
AB=11:Self-lock Low TTL level ouput;
 
Blue board
 
The module is based on a touch-sensing IC (TTP223B) capacitive touch switch module. In the normal state, the module output low, low power consumption; When a finger touches the corresponding position, the module output high, if not touched for 12 seconds, switch to low-power mode.
 
Features:
 
Low power consumption
Power supply for 2 ~ 5.5V DC
Can replace the traditional touch of a button
Four M2 screws positioning holes for easy installation
 
Specification:
 
 
Item
Min

Typical

Max

Unit
Power supply voltage VCC
2.0

3

5.5

V
Output high VOH
-

0.8VCC

-

V
Output low VOL
-

-

0.3VCC

V
Output Pin Sink Current (@ VCC = 3V, VOL = 0.6V)
-

8

-

mA
Output pin pull-up current (@ VCC = 3V, VOH = 2.4V)
-

4

-

mA
Response time (low power mode)
-

-

220

mS
Response time (touch mode)
-

-

60

mS
Size
24x24x7.2

mm
Weight
2

g

 
Red borad
 
1.Size:15*11mm
2.Power:2.5-5.5V
Trigger setting mode: (1- > Short ; 0- > No Short)
AB=00:No-lock High TTL level ouput;
AB=01:Self-lock High TTL level ouput;
AB=10:No-lock Low TTL level ouput;
AB=11:Self-lock Low TTL level ouput;
 
Blue board
 
The module is based on a touch-sensing IC (TTP223B) capacitive touch switch module. In the normal state, the module output low, low power consumption; When a finger touches the corresponding position, the module output high, if not touched for 12 seconds, switch to low-power mode.
 
Features:
 
Low power consumption
Power supply for 2 ~ 5.5V DC
Can replace the traditional touch of a button
Four M2 screws positioning holes for easy installation
 
Specification:
 
 
Item
Min

Typical

Max

Unit
Power supply voltage VCC
2.0

3

5.5

V
Output high VOH
-

0.8VCC

-

V
Output low VOL
-

-

0.3VCC

V
Output Pin Sink Current (@ VCC = 3V, VOL = 0.6V)
-

8

-

mA
Output pin pull-up current (@ VCC = 3V, VOH = 2.4V)
-

4

-

mA
Response time (low power mode)
-

-

220

mS
Response time (touch mode)
-

-

60

mS
Size
24x24x7.2

mm
Weight
2

g

 DC 3V-6V bis 400kV 400000V Boost Step up Power Module High Voltage Generator

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
MAX9814
The MAX9814 is a low-cost, high-performance microphone amplifier with automatic gain control (AGC) and low-noise microphone bias. Device features a low-noise front-end amplifier, variable gain amplifier (VGA), output amplifier, microphone bias voltage generator and AGC control circuit
 
Specifications:
 
Supply Voltage: 2.7v-5.5v @ 3mA current
Output: 2Vpp on 1.25V bias
Frequency Response: 20Hz - 20 KHz
Programmable Attack and Release Ratio
Automatic gain, selectable max from 40dB, 50dB or 60dB
Low Input-Referred Noise Density of 30nV /
Low THD: 0.04% (typ)
 
Automatic Gain Control (AGC)
3 gain setting (40dB, 50dB, 60dB)
Programmable operation time
Programmable operation and release time than
2.7V to 5.5V supply voltage range
Low input noise density 30nV /
Low THD: 0.04% (typ)
Low-Power Shutdown Mode
Built-2V low-noise microphone bias
Space-saving 14-pin TDFN (3mm x 3mm) Package
 
-40 ° C to 85 ° C extended temperature range
 
 
MAX4466
 
Description: Add an ear to your project with this well-designed electret microphone amplifier. This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX4466, an op-amp specifically designed for this delicate task!
The amplifier has excellent power supply noise rejection, so this amplifier sounds really good and isn't nearly as noisy or scratchy as other mic amp breakouts we've tried!
This breakout is best used for projects such as voice changers, o recordingmpling, and o-reactive projects that use FFT. On the back, we include a small trimmer pot to adjust the gain. You can set the gain from 25x to 125x.
That's down to be about 200mVpp (for normal speaking volume about 6 inch away) which is good for attaching to something that expects'line level'input without clipping, or up to about 1Vpp, perfect for reading from a microcontroller ADC. The output is rail-to-rail so if the sounds gets loud, the output can go up to 5Vpp!
Using it is simple:
Connect GND to ground, VCC to 2.4-5VDC.
For the best performance, use the "quietest" supply available (on an for Arduino, this would be the 3.3V supply).
The o waveform will come out of the OUT pin. The output will have a DC bias of VCC/2 so when its
perfectly quiet, the voltage will be a steady VCC/2 volts (it is DC coupled). If the o equipment you're using requires AC coupled o, place a 100uF capacitor between the output pin and the input of your device. If you're connecting to an o amplifier that has differential inputs or includes decoupling capacitors, the 100uF cap is not required.
The output pin is not designed to drive speakers or anything but the smallest in-ear headphones- you'll need an o amplifier (such as 3.7W stereo amp) if you want to connect the amp directly to speakers. If you're connecting to a microcontroller pin, you don't need an amplifier or decoupling capacitor - connect the OUT pin directly to the microcontroller ADC pin.
For o-reactive projects, we suggest using an FFT driver library which can take the o input and'translate'it into frequencies.
Condition: New
Type: Other
Color: purple
Material: PC Metal

 
MAX9814
The MAX9814 is a low-cost, high-performance microphone amplifier with automatic gain control (AGC) and low-noise microphone bias. Device features a low-noise front-end amplifier, variable gain amplifier (VGA), output amplifier, microphone bias voltage generator and AGC control circuit
 
Specifications:
 
Supply Voltage: 2.7v-5.5v @ 3mA current
Output: 2Vpp on 1.25V bias
Frequency Response: 20Hz - 20 KHz
Programmable Attack and Release Ratio
Automatic gain, selectable max from 40dB, 50dB or 60dB
Low Input-Referred Noise Density of 30nV /
Low THD: 0.04% (typ)
 
Automatic Gain Control (AGC)
3 gain setting (40dB, 50dB, 60dB)
Programmable operation time
Programmable operation and release time than
2.7V to 5.5V supply voltage range
Low input noise density 30nV /
Low THD: 0.04% (typ)
Low-Power Shutdown Mode
Built-2V low-noise microphone bias
Space-saving 14-pin TDFN (3mm x 3mm) Package
 
-40 ° C to 85 ° C extended temperature range
 
 
MAX4466
 
Description: Add an ear to your project with this well-designed electret microphone amplifier. This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX4466, an op-amp specifically designed for this delicate task!
The amplifier has excellent power supply noise rejection, so this amplifier sounds really good and isn't nearly as noisy or scratchy as other mic amp breakouts we've tried!
This breakout is best used for projects such as voice changers, o recordingmpling, and o-reactive projects that use FFT. On the back, we include a small trimmer pot to adjust the gain. You can set the gain from 25x to 125x.
That's down to be about 200mVpp (for normal speaking volume about 6 inch away) which is good for attaching to something that expects'line level'input without clipping, or up to about 1Vpp, perfect for reading from a microcontroller ADC. The output is rail-to-rail so if the sounds gets loud, the output can go up to 5Vpp!
Using it is simple:
Connect GND to ground, VCC to 2.4-5VDC.
For the best performance, use the "quietest" supply available (on an for Arduino, this would be the 3.3V supply).
The o waveform will come out of the OUT pin. The output will have a DC bias of VCC/2 so when its
perfectly quiet, the voltage will be a steady VCC/2 volts (it is DC coupled). If the o equipment you're using requires AC coupled o, place a 100uF capacitor between the output pin and the input of your device. If you're connecting to an o amplifier that has differential inputs or includes decoupling capacitors, the 100uF cap is not required.
The output pin is not designed to drive speakers or anything but the smallest in-ear headphones- you'll need an o amplifier (such as 3.7W stereo amp) if you want to connect the amp directly to speakers. If you're connecting to a microcontroller pin, you don't need an amplifier or decoupling capacitor - connect the OUT pin directly to the microcontroller ADC pin.
For o-reactive projects, we suggest using an FFT driver library which can take the o input and'translate'it into frequencies.
Condition: New
Type: Other
Color: purple
Material: PC Metal

 
  3S  
Description:
 
100% Brand new and high quality 18650 battery charging Module 
FOR Lithium POLYMER protection Board(3.7V)
Single cell battery overcharge protect voltage : 4.21-4.29 V 
Single cell battery overcharge  protect recover voltage : 4.14-4.24V
Overcharge protect delay : 1.5-2.5S 
Single cell battery over-discharge  protect voltage : 2.72-2.88 V  
Overcharge protect Current : 100A 
Over-discharge protect Current : 100A 
Over-discharge protect delay : 0.5-1.5S 
Temperature protect : Yes
Disconnect protect : Yes
Shortage protect : Yes 
Shortage delay : 100-600 uS
Shortage protect recover : YES
Charging Current : 60A
Current Balance : Yes
Ampere balance (Current) : 60MA
Voltage alance accuracy : 4.14-4.24V  
 
 
  4S  
Description:
 
1.This protection board is 3s 4s 5s in common use lithium battery protection board (you can adjust for how many strings to be used), the default delivery is 4S ternary lithium.
2.Specified chip, stable performance, support disconnection protection, over-current protection, over discharge protection, overcharge protection, with balance, etc.
3.Common use for “same port” and “different port”, the protection board uses 15 high-power of ultra-low resistance MOS tube (discharge of 8, charging of 7), in the same port mode can support the discharge current 60A, charging current 60A; different port mode discharge current 80A, charging current 60A.
4.Can use for LMO.Ternary lithium battery.LCO(3.7V)battery packs etc.
 
Parameter:
 
FOR Li-POLYMER  LiMnO Protect Parameter(3.6V/3.7V)
Single cell battery overcharge protect voltage : 4.21-4.29 V 
Single cell battery overcharge  protect recover voltage : 4.14-4.24 V 
Overcharge protect delay : 1.5-2.5S 
Single cell battery over-discharge  protect voltage : 2.72-2.88 V  
Single cell battery over-discharge  protect recover voltage : 2.9-3.1 V  
Over charge protective current:100A
Over discharge protective current:100A
Over-discharge protect delay : 0.5-1.5S 
Temperature protect : Yes,have Temperature control interface.
Disconnect protect : Yes 
Shortage protect : Yes 
Shortage delay : 100-600 uS 
Shortage protect recover mode: Off load release.
Contact discharge current:80A
Synopline discharge current:60A
Charging current:60A
balance function:yes
Ampere balance (Current) : 60MA 
Current balance accuracy : 4.14-4.24V
 
  5S  
Description:
 
1.This protection board is 3s 4s 5s in common use lithium battery protection board (you can adjust for how many strings to be used), the default delivery is 5S ternary lithium.
2.Specified chip, stable performance, support disconnection protection, over-current protection, over discharge protection, overcharge protection, with balance, etc.
3.Common use for “same port” and “different port”, the protection board uses 15 high-power of ultra-low resistance MOS tube (discharge of 8, charging of 7), in the same port mode can support the discharge current 60A, charging current 60A; different port mode discharge current 80A, charging current 60A.
4.Can use for LMO.Ternary lithium battery.LCO(3.7V)battery packs etc.
 
Parameter:
 
FOR Li-POLYMER  LiMnO Protect Parameter(3.6V/3.7V)
Single cell battery overcharge protect voltage : 4.21-4.29 V 
Single cell battery overcharge  protect recover voltage : 4.14-4.24 V 
Overcharge protect delay : 1.5-2.5S 
Single cell battery over-discharge  protect voltage : 2.72-2.88 V  
Single cell battery over-discharge  protect recover voltage : 2.9-3.1 V  
Over charge protective current:100A
Over discharge protective current:100A
Over-discharge protect delay : 0.5-1.5S 
Temperature protect : Yes,have Temperature control interface.
Disconnect protect : Yes 
Shortage protect : Yes 
Shortage delay : 100-600 uS 
Shortage protect recover mode: Off load release.
Contact discharge current:80A
Synopline discharge current:60A
Charging current:60A
balance function:yes
Ampere balance (Current) : 60MA 
Current balance accuracy : 4.14-4.24V
 
 
 

Features:
1, 2 * 3 w miniature digital power amplifier board class D power supply can use the computer?
Answer: power amplifier board can use a computer power supply, but will produce noise may be produced (also some customers did not appear murmurs), the best advice of independent power supply.
2, miniature digital 2 * 3 w class D power amplifier boards with the speaker of the house is good?
Answer: our speaker is only provide DIY players try, sound is not particularly good, if the pursuit of high sound client can buy separately.
3, 2 * 3 w miniature digital power amplifier board class D why there are noise after power on the speaker?
The answer:
1, appear whistlers, should be the audio input line, the introduction of shielded wire should be used for audio input line, and then there is audio input line don't hung up to connect good audio source.
2, is a kind of reason may be that some power supply is bad interference is very big, switch power supply.
Customer common problems:
1, 2 * 3 w miniature digital power amplifier board class D power supply can use the computer?
Answer: power amplifier board can use a computer power supply, but will produce noise may be produced (also some customers did not appear murmurs), the best advice of independent power supply.
2, miniature digital 2 * 3 w class D power amplifier boards with the speaker of the house is good?
Answer: our speaker is only provide DIY players try, sound is not particularly good, if the pursuit of high sound client can buy separately.
3, 2 * 3 w miniature digital power amplifier board class D why there are noise after power on the speaker?
The answer:
1, appear whistlers, should be the audio input line, the introduction of shielded wire should be used for audio input line, and then there is audio input line don't hung up to connect good audio source.
2, is a kind of reason may be that some power supply is bad interference is very big, switch power supply.
Good noise suppression, under the condition of the connected input audio, ears also can't hear any noise on the speaker, dual channel stereo, 5 v power supply can output 3 w 3 w power, can be directly driven 4 Ω, 8 Ω small speakers, big output power, energy, sound quality is good. Unique without LC filter class D digital power board, can use computer USB power supply directly. Double panel wiring, properly solve wiring caused by potential balance and crosstalk between channels, super mini design, can be easily placed in a variety of digital products within a small space, high amplification efficiency. Are all made of solid plate welding machine, welding quality of the manual soldering iron welding comparable!
 
Feature:
Model: PA8403
Power: Low Power
Super size: 1.85 * 2.11 cm
Excellent noise suppression, in the absence of circumstances connected to input audio ear close to the speaker can not hear any noise, two-channel stereo, 5V power supply can output 3W 3W power, can directly drive 4Ω, 8Ω small speakers, the output power large, full of energy, good sound quality. The unique non-LC filter Class-D digital power board can be directly used computer USB power supply. Double panel wiring, wiring properly resolve the ground potential caused by balance and inter-channel crosstalk, ultra-miniature design, can easily be placed in a variety of digital products within a small space, high amplification efficiency. All using the whole plate welding machine, welding quality comparable non-manual soldering iron!
 
Customer common problems:
1, 2 * 3 w miniature digital power amplifier board class D power supply can use the computer?
Answer: power amplifier board can use a computer power supply, but will produce noise may be produced (also some customers did not appear murmurs), the best advice of independent power supply.
2, miniature digital 2 * 3 w class D power amplifier boards with the speaker of the house is good?
Answer: our speaker is only provide DIY players try, sound is not particularly good, if the pursuit of high sound client can buy separately.
3, 2 * 3 w miniature digital power amplifier board class D why there are noise after power on the speaker?
The answer:
1, appear whistlers, should be the audio input line, the introduction of shielded wire should be used for audio input line, and then there is audio input line don't hung up to connect good audio source.
2, is a kind of reason may be that some power supply is bad interference is very big, switch power supply.
Good noise suppression, under the condition of the connected input audio, ears also can't hear any noise on the speaker, dual channel stereo, 5 v power supply can output 3 w 3 w power, can be directly driven 4 Ω, 8 Ω small speakers, big output power, energy, sound quality is good. Unique without LC filter class D digital power board, can use computer USB power supply directly. Double panel wiring, properly solve wiring caused by potential balance and crosstalk between channels, super mini design, can be easily placed in a variety of digital products within a small space, high amplification efficiency. Are all made of solid plate welding machine, welding quality of the manual soldering iron welding comparable!
Note: The left and right channel output of the "negative" and can not be connected together, otherwise it will burn IC, and should be preceded powered speakers connected (load).
Rated working voltage 2.5V ~ 5V, limit operating voltage 5.5V.

Features:
1, 2 * 3 w miniature digital power amplifier board class D power supply can use the computer?
Answer: power amplifier board can use a computer power supply, but will produce noise may be produced (also some customers did not appear murmurs), the best advice of independent power supply.
2, miniature digital 2 * 3 w class D power amplifier boards with the speaker of the house is good?
Answer: our speaker is only provide DIY players try, sound is not particularly good, if the pursuit of high sound client can buy separately.
3, 2 * 3 w miniature digital power amplifier board class D why there are noise after power on the speaker?
The answer:
1, appear whistlers, should be the audio input line, the introduction of shielded wire should be used for audio input line, and then there is audio input line don't hung up to connect good audio source.
2, is a kind of reason may be that some power supply is bad interference is very big, switch power supply.
Customer common problems:
1, 2 * 3 w miniature digital power amplifier board class D power supply can use the computer?
Answer: power amplifier board can use a computer power supply, but will produce noise may be produced (also some customers did not appear murmurs), the best advice of independent power supply.
2, miniature digital 2 * 3 w class D power amplifier boards with the speaker of the house is good?
Answer: our speaker is only provide DIY players try, sound is not particularly good, if the pursuit of high sound client can buy separately.
3, 2 * 3 w miniature digital power amplifier board class D why there are noise after power on the speaker?
The answer:
1, appear whistlers, should be the audio input line, the introduction of shielded wire should be used for audio input line, and then there is audio input line don't hung up to connect good audio source.
2, is a kind of reason may be that some power supply is bad interference is very big, switch power supply.
Good noise suppression, under the condition of the connected input audio, ears also can't hear any noise on the speaker, dual channel stereo, 5 v power supply can output 3 w 3 w power, can be directly driven 4 Ω, 8 Ω small speakers, big output power, energy, sound quality is good. Unique without LC filter class D digital power board, can use computer USB power supply directly. Double panel wiring, properly solve wiring caused by potential balance and crosstalk between channels, super mini design, can be easily placed in a variety of digital products within a small space, high amplification efficiency. Are all made of solid plate welding machine, welding quality of the manual soldering iron welding comparable!
 
Feature:
Model: PA8403
Power: Low Power
Super size: 1.85 * 2.11 cm
Excellent noise suppression, in the absence of circumstances connected to input audio ear close to the speaker can not hear any noise, two-channel stereo, 5V power supply can output 3W 3W power, can directly drive 4Ω, 8Ω small speakers, the output power large, full of energy, good sound quality. The unique non-LC filter Class-D digital power board can be directly used computer USB power supply. Double panel wiring, wiring properly resolve the ground potential caused by balance and inter-channel crosstalk, ultra-miniature design, can easily be placed in a variety of digital products within a small space, high amplification efficiency. All using the whole plate welding machine, welding quality comparable non-manual soldering iron!
 
Customer common problems:
1, 2 * 3 w miniature digital power amplifier board class D power supply can use the computer?
Answer: power amplifier board can use a computer power supply, but will produce noise may be produced (also some customers did not appear murmurs), the best advice of independent power supply.
2, miniature digital 2 * 3 w class D power amplifier boards with the speaker of the house is good?
Answer: our speaker is only provide DIY players try, sound is not particularly good, if the pursuit of high sound client can buy separately.
3, 2 * 3 w miniature digital power amplifier board class D why there are noise after power on the speaker?
The answer:
1, appear whistlers, should be the audio input line, the introduction of shielded wire should be used for audio input line, and then there is audio input line don't hung up to connect good audio source.
2, is a kind of reason may be that some power supply is bad interference is very big, switch power supply.
Good noise suppression, under the condition of the connected input audio, ears also can't hear any noise on the speaker, dual channel stereo, 5 v power supply can output 3 w 3 w power, can be directly driven 4 Ω, 8 Ω small speakers, big output power, energy, sound quality is good. Unique without LC filter class D digital power board, can use computer USB power supply directly. Double panel wiring, properly solve wiring caused by potential balance and crosstalk between channels, super mini design, can be easily placed in a variety of digital products within a small space, high amplification efficiency. Are all made of solid plate welding machine, welding quality of the manual soldering iron welding comparable!
Note: The left and right channel output of the "negative" and can not be connected together, otherwise it will burn IC, and should be preceded powered speakers connected (load).
Rated working voltage 2.5V ~ 5V, limit operating voltage 5.5V.

Features:
1, 2 * 3 w miniature digital power amplifier board class D power supply can use the computer?
Answer: power amplifier board can use a computer power supply, but will produce noise may be produced (also some customers did not appear murmurs), the best advice of independent power supply.
2, miniature digital 2 * 3 w class D power amplifier boards with the speaker of the house is good?
Answer: our speaker is only provide DIY players try, sound is not particularly good, if the pursuit of high sound client can buy separately.
3, 2 * 3 w miniature digital power amplifier board class D why there are noise after power on the speaker?
The answer:
1, appear whistlers, should be the audio input line, the introduction of shielded wire should be used for audio input line, and then there is audio input line don't hung up to connect good audio source.
2, is a kind of reason may be that some power supply is bad interference is very big, switch power supply.
Customer common problems:
1, 2 * 3 w miniature digital power amplifier board class D power supply can use the computer?
Answer: power amplifier board can use a computer power supply, but will produce noise may be produced (also some customers did not appear murmurs), the best advice of independent power supply.
2, miniature digital 2 * 3 w class D power amplifier boards with the speaker of the house is good?
Answer: our speaker is only provide DIY players try, sound is not particularly good, if the pursuit of high sound client can buy separately.
3, 2 * 3 w miniature digital power amplifier board class D why there are noise after power on the speaker?
The answer:
1, appear whistlers, should be the audio input line, the introduction of shielded wire should be used for audio input line, and then there is audio input line don't hung up to connect good audio source.
2, is a kind of reason may be that some power supply is bad interference is very big, switch power supply.
Good noise suppression, under the condition of the connected input audio, ears also can't hear any noise on the speaker, dual channel stereo, 5 v power supply can output 3 w 3 w power, can be directly driven 4 Ω, 8 Ω small speakers, big output power, energy, sound quality is good. Unique without LC filter class D digital power board, can use computer USB power supply directly. Double panel wiring, properly solve wiring caused by potential balance and crosstalk between channels, super mini design, can be easily placed in a variety of digital products within a small space, high amplification efficiency. Are all made of solid plate welding machine, welding quality of the manual soldering iron welding comparable!
 
Feature:
Model: PA8403
Power: Low Power
Super size: 1.85 * 2.11 cm
Excellent noise suppression, in the absence of circumstances connected to input audio ear close to the speaker can not hear any noise, two-channel stereo, 5V power supply can output 3W 3W power, can directly drive 4Ω, 8Ω small speakers, the output power large, full of energy, good sound quality. The unique non-LC filter Class-D digital power board can be directly used computer USB power supply. Double panel wiring, wiring properly resolve the ground potential caused by balance and inter-channel crosstalk, ultra-miniature design, can easily be placed in a variety of digital products within a small space, high amplification efficiency. All using the whole plate welding machine, welding quality comparable non-manual soldering iron!
 
Customer common problems:
1, 2 * 3 w miniature digital power amplifier board class D power supply can use the computer?
Answer: power amplifier board can use a computer power supply, but will produce noise may be produced (also some customers did not appear murmurs), the best advice of independent power supply.
2, miniature digital 2 * 3 w class D power amplifier boards with the speaker of the house is good?
Answer: our speaker is only provide DIY players try, sound is not particularly good, if the pursuit of high sound client can buy separately.
3, 2 * 3 w miniature digital power amplifier board class D why there are noise after power on the speaker?
The answer:
1, appear whistlers, should be the audio input line, the introduction of shielded wire should be used for audio input line, and then there is audio input line don't hung up to connect good audio source.
2, is a kind of reason may be that some power supply is bad interference is very big, switch power supply.
Good noise suppression, under the condition of the connected input audio, ears also can't hear any noise on the speaker, dual channel stereo, 5 v power supply can output 3 w 3 w power, can be directly driven 4 Ω, 8 Ω small speakers, big output power, energy, sound quality is good. Unique without LC filter class D digital power board, can use computer USB power supply directly. Double panel wiring, properly solve wiring caused by potential balance and crosstalk between channels, super mini design, can be easily placed in a variety of digital products within a small space, high amplification efficiency. Are all made of solid plate welding machine, welding quality of the manual soldering iron welding comparable!
Note: The left and right channel output of the "negative" and can not be connected together, otherwise it will burn IC, and should be preceded powered speakers connected (load).
Rated working voltage 2.5V ~ 5V, limit operating voltage 5.5V.

Brand new
Size: about 56mm*45mm*1.2mm
Over voltage range: 4.25-4.35v±0.05v
Over discharge voltage range: 2.3-3.0v±0.05v
Maximum operating current: 0-25A
Maximum transient current: 34-40A
Quiescent current: less than 30uA
Internal resistance: less than 100mΩ
Working temperature: -40--- 50°
Storage condition: -40-- 80°
Effective life: more than30000h
Short circuit protection: Yes, delayed self recovery
 
 
Precautions:
 
Strictly according to the diagram wiring: 0V(B-)3.7V(B1)7.4V(B2)11.1V(B ), Do not deliberately short circuit.
After the line is connected, Need to charge first, then have output.
When the battery is connected in series with 3 groups, Please ensure that the voltage of each battery is the same. If not same, please fill in each set of batteries and then use.
Do not mix the good battery and the battery.
The capacity of the battery internal resistance is closer will be better.
Attention: Do not mix the good battery and poor battery to use. The internal resistance of 3 battery capacity are closer will be better. Please buyers know the professional knowledge of this module before buying
 
 
Note:
 
Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully.
Please allow 1-5mm differs due to manual measurement.
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated sam

ESP32-CAM-MB
Parameter：
Use low-power dual-core 32-bit CPU, which can be used as an application processor.
The main frequency is up to 240MHz, and the computing power is up to 600 DMIPS
Built-in 520 KB SRAM, external 8MB PSRAM
Support UART/SPI/I2C/PWM/ADC/DAC and other interfaces
Support OV2640 and OV7670 cameras, built-in flash
Support picture WiFI upload
Support TF card
Support multiple sleep modes.
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click network configuration
Support secondary development
Specifications
Working voltage 4.75-5.25V
SPIFlash default 32Mbit
RAM internal 520KB external 8MB PSRAM
Wi-Fi 802.11b/g/n/e/i
Bluetooth Bluetooth 4.2BR/EDR and BLE standard
Support interface (2Mbps) UART, SPI, I2C, PWM
Support TF card, maximum support 4G
IO port 9
Serial port rate default 115200bps
Spectrum range 2400 ~2483.5MHz
Antenna form Onboard PCB antenna, gain 2dBi
Image output format: JPEG (only OV2640 support), BMP, GRAYSCALE
Packaging method DIP-16
Transmit power 802.11b: 17±2dBm (@11Mbps)
802.11g: 14±2dBm (@54Mbps)
802.11n: 13±2dBm (@MCS7)
Receiving sensitivity CCK, 1Mbps: -90dBm
CCK, 11Mbps: -85dBm
6Mbps(1/2BPSK): -88dBm
54Mbps (3/464-QAM): -70dBm
MCS7 (65Mbps, 72.2Mbps): -67dBm
Power consumption Turn off the flash: 180mA@5V
Turn on the flash and adjust the brightness to the maximum: 310mA@5V
Deep-sleep: The lowest power consumption can reach 6mA@5V
Moderm-sleep: the lowest can reach 20mA@5V
Light-sleep: the lowest can reach 6.7mA@5V
Security WPA/WPA2/WPA2-Enterprise/WPS
Working temperature -20 ℃~ 70 ℃
Storage environment -40 ℃~ 125 ℃, <90% RH
Application
Home smart device image transmission
Wireless monitoring
Smart agriculture
QR wireless recognition
Wireless positioning system signal
And other IoT applications

ESP32-CAM-MB
Parameter：
Use low-power dual-core 32-bit CPU, which can be used as an application processor.
The main frequency is up to 240MHz, and the computing power is up to 600 DMIPS
Built-in 520 KB SRAM, external 8MB PSRAM
Support UART/SPI/I2C/PWM/ADC/DAC and other interfaces
Support OV2640 and OV7670 cameras, built-in flash
Support picture WiFI upload
Support TF card
Support multiple sleep modes.
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click network configuration
Support secondary development
Specifications
Working voltage 4.75-5.25V
SPIFlash default 32Mbit
RAM internal 520KB external 8MB PSRAM
Wi-Fi 802.11b/g/n/e/i
Bluetooth Bluetooth 4.2BR/EDR and BLE standard
Support interface (2Mbps) UART, SPI, I2C, PWM
Support TF card, maximum support 4G
IO port 9
Serial port rate default 115200bps
Spectrum range 2400 ~2483.5MHz
Antenna form Onboard PCB antenna, gain 2dBi
Image output format: JPEG (only OV2640 support), BMP, GRAYSCALE
Packaging method DIP-16
Transmit power 802.11b: 17±2dBm (@11Mbps)
802.11g: 14±2dBm (@54Mbps)
802.11n: 13±2dBm (@MCS7)
Receiving sensitivity CCK, 1Mbps: -90dBm
CCK, 11Mbps: -85dBm
6Mbps(1/2BPSK): -88dBm
54Mbps (3/464-QAM): -70dBm
MCS7 (65Mbps, 72.2Mbps): -67dBm
Power consumption Turn off the flash: 180mA@5V
Turn on the flash and adjust the brightness to the maximum: 310mA@5V
Deep-sleep: The lowest power consumption can reach 6mA@5V
Moderm-sleep: the lowest can reach 20mA@5V
Light-sleep: the lowest can reach 6.7mA@5V
Security WPA/WPA2/WPA2-Enterprise/WPS
Working temperature -20 ℃~ 70 ℃
Storage environment -40 ℃~ 125 ℃, <90% RH
Application
Home smart device image transmission
Wireless monitoring
Smart agriculture
QR wireless recognition
Wireless positioning system signal
And other IoT applications

ESP32-CAM-MB
Parameter：
Use low-power dual-core 32-bit CPU, which can be used as an application processor.
The main frequency is up to 240MHz, and the computing power is up to 600 DMIPS
Built-in 520 KB SRAM, external 8MB PSRAM
Support UART/SPI/I2C/PWM/ADC/DAC and other interfaces
Support OV2640 and OV7670 cameras, built-in flash
Support picture WiFI upload
Support TF card
Support multiple sleep modes.
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click network configuration
Support secondary development
Specifications
Working voltage 4.75-5.25V
SPIFlash default 32Mbit
RAM internal 520KB external 8MB PSRAM
Wi-Fi 802.11b/g/n/e/i
Bluetooth Bluetooth 4.2BR/EDR and BLE standard
Support interface (2Mbps) UART, SPI, I2C, PWM
Support TF card, maximum support 4G
IO port 9
Serial port rate default 115200bps
Spectrum range 2400 ~2483.5MHz
Antenna form Onboard PCB antenna, gain 2dBi
Image output format: JPEG (only OV2640 support), BMP, GRAYSCALE
Packaging method DIP-16
Transmit power 802.11b: 17±2dBm (@11Mbps)
802.11g: 14±2dBm (@54Mbps)
802.11n: 13±2dBm (@MCS7)
Receiving sensitivity CCK, 1Mbps: -90dBm
CCK, 11Mbps: -85dBm
6Mbps(1/2BPSK): -88dBm
54Mbps (3/464-QAM): -70dBm
MCS7 (65Mbps, 72.2Mbps): -67dBm
Power consumption Turn off the flash: 180mA@5V
Turn on the flash and adjust the brightness to the maximum: 310mA@5V
Deep-sleep: The lowest power consumption can reach 6mA@5V
Moderm-sleep: the lowest can reach 20mA@5V
Light-sleep: the lowest can reach 6.7mA@5V
Security WPA/WPA2/WPA2-Enterprise/WPS
Working temperature -20 ℃~ 70 ℃
Storage environment -40 ℃~ 125 ℃, <90% RH
Application
Home smart device image transmission
Wireless monitoring
Smart agriculture
QR wireless recognition
Wireless positioning system signal
And other IoT applications

Specifications
 
1 . module : 20.5mmx41mm
2 . the module weight : 57g 
Introduction to 1602 - character LCD
1602LCD main technical parameters :
1 . display capacity : 16x2 characters
2 . chip working voltage : 4.5-5.5V
3 . current : 2.0mA ( 5.0 V)
4 . module optimum working voltage : 5.0V
5 . character size : 2.95x4.35 ( W xH) mm

 
New L293D motor shield, the input voltage DC4.5-25V
600mA OUTPUT CURRENT CAPABILITY PER CHANNEL
1.2A PEAK OUTPUT CURRENT (non repetitive)PER CHANNEL
ENABLE FACILITY
OVERTEMPERATURE PROTECTION
LOGICAL "0" INPUT VOLTAGE UP TO 1.5 V(HIGH NOISE IMMUNITY)
INTERNAL CLAMP DIODES
The Device is a mnolithic integrated high voltage,high current four channel driver designed to accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoides, DC
and stepping motors) and switching power transistors .To simplify use as two bridges each pair of channels is equipped with an enable input. A separate supply input is provided for the logic, allowing operation at a lower voltage and internal clamp diodes are included. This device is suitable for use in switching applications at frequencies up to 5 kHz.