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LCD1602
 
 Built-in industry standard HD44780 equivalent LCD controller
 
   Commonly used in: copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and storage devices
 
   LCM type: Characters
 
   Can display 2-lines X 16-characters
 
   Operate with 5V DC
 
   Module dimension: 80mm x 36mm x 12mm
 
   Viewing area size: 64.5mm x 16mm
 
 
I2C/IIC
 
1. Size: 41.5 mm (length) * 19 mm (width) * 15.3 mm (high)
3. PCB color: black
4. The power supply voltage: 2.5-6 v
5. Support the I2C protocol
6. Take a backlight power control, can be set through the jumper cap whether backlight power supply connection. On jumper cap to connect the backlight power supply, unplug jumper cap to disconnect the backlight power supply
7. Contrast can be adjusted, rotate blue potentiometer, enhance the clockwise and counterclockwise. Potentiometer design on the front, convenient customer adjust freely anytime and anywhere
8. The module can cascade, maximum cascade eight. Through the short circuit A0 / A1 / A2 modify device address. The default address 0 x27

LCD1602
 
 Built-in industry standard HD44780 equivalent LCD controller
 
   Commonly used in: copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and storage devices
 
   LCM type: Characters
 
   Can display 2-lines X 16-characters
 
   Operate with 5V DC
 
   Module dimension: 80mm x 36mm x 12mm
 
   Viewing area size: 64.5mm x 16mm
 
 
I2C/IIC
 
1. Size: 41.5 mm (length) * 19 mm (width) * 15.3 mm (high)
3. PCB color: black
4. The power supply voltage: 2.5-6 v
5. Support the I2C protocol
6. Take a backlight power control, can be set through the jumper cap whether backlight power supply connection. On jumper cap to connect the backlight power supply, unplug jumper cap to disconnect the backlight power supply
7. Contrast can be adjusted, rotate blue potentiometer, enhance the clockwise and counterclockwise. Potentiometer design on the front, convenient customer adjust freely anytime and anywhere
8. The module can cascade, maximum cascade eight. Through the short circuit A0 / A1 / A2 modify device address. The default address 0 x27

LCD1602
 
 Built-in industry standard HD44780 equivalent LCD controller
 
   Commonly used in: copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and storage devices
 
   LCM type: Characters
 
   Can display 2-lines X 16-characters
 
   Operate with 5V DC
 
   Module dimension: 80mm x 36mm x 12mm
 
   Viewing area size: 64.5mm x 16mm
 
 
I2C/IIC
 
1. Size: 41.5 mm (length) * 19 mm (width) * 15.3 mm (high)
3. PCB color: black
4. The power supply voltage: 2.5-6 v
5. Support the I2C protocol
6. Take a backlight power control, can be set through the jumper cap whether backlight power supply connection. On jumper cap to connect the backlight power supply, unplug jumper cap to disconnect the backlight power supply
7. Contrast can be adjusted, rotate blue potentiometer, enhance the clockwise and counterclockwise. Potentiometer design on the front, convenient customer adjust freely anytime and anywhere
8. The module can cascade, maximum cascade eight. Through the short circuit A0 / A1 / A2 modify device address. The default address 0 x27

4 string 16.8V 40A lithium battery protection board (comes with recovery function-AUTO Recovery)
 
Scope: Nominal voltage of 3.6V, 3.7V lithium battery (including 18650,26650, polymer lithium battery)
 
Product Size: 45 * 55 * 3.4mm (Standard Edition / Enhanced), 46 * 60 * 3.4mm (balanced version)
 
Product weight: 9.3g (standard / enhanced version), 10.3g (balanced version)
 
Charging voltage: 16.8V - 18.1V
 
Continuous discharge current (upper limit): 40A (if the cooling environment is not good, please reduce the load current use)
 
Continuous charge current (upper limit): 20A
 
Equalization version: suitable for starting current below 80A, power 135W below the drill.

 
 CNC Shield Board:
 
1,Latest CNC Shield Version 3.0 for Arduino.
2,GRBL 0.9 compatible. (Open source firmware that runs on an UNO for Arduino that turns G-code commands into stepper signals)
3,PWM Spindle and direction pins
4,4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a  full 4th axis with custom firmware using pins D12 and D13)
5,2 x End stops for each axis (6 in total) 
6,Coolant enable 
7,Uses removable A4988 or DRV8825 compatible stepper drivers
8,Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to  1/32 micro-stepping ) 
9,Compact design.
10,Stepper Motors can be connected with 4 pin molex connectors or soldered in place. 
11,Runs on 12-36V DC. (At the moment only the DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)
12,Please note that this is an unassembled kit and Basic soldering skills are needed.
 
A4988 Stepper Motor Driver:
 
1,A4988 Stepper Motor Driver Board is a breakout board for Allegro's A4988 DMOS Micro stepping Driver with Translator and Overcurrent Protection; please read the A4988 datasheet carefully before using this product.
Low RDS (On) Output
2,Automatic current decay mode  detection / selection
3,Mix with slow current decay modes
4,Synchronous rectification for low power dissipation
5,Internal UVLO
6,Crossover-current protection
7,3.3 and 5 V compatible logic supply
8,Thermal shutdown circuitry
9,Ground fault protection
10,Load short-circuit protection
11,Five selectable step modes: full,  1/2, 1/4, 1/8 and 1/16
 
 
UNO R3 Board for Arduino:
MCU: ATmega328
USB interface: ATmega16U2
Operating voltage: 5V
Digital I/O pins: 14 (including 6  with PWM capability)
Analog input pins: 6
I-I/O pin output current: 40mA max
3.3V output current: 150mA max
Flash memory: 32kB (0.5kB used by bootloader- included)
Static RAM (SRAM): 2kB
EEPROM: 1kB
Clock speed: 16MHz
 
 

 
 CNC Shield Board:
 
1,Latest CNC Shield Version 3.0 for Arduino.
2,GRBL 0.9 compatible. (Open source firmware that runs on an UNO for Arduino that turns G-code commands into stepper signals)
3,PWM Spindle and direction pins
4,4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a  full 4th axis with custom firmware using pins D12 and D13)
5,2 x End stops for each axis (6 in total) 
6,Coolant enable 
7,Uses removable A4988 or DRV8825 compatible stepper drivers
8,Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to  1/32 micro-stepping ) 
9,Compact design.
10,Stepper Motors can be connected with 4 pin molex connectors or soldered in place. 
11,Runs on 12-36V DC. (At the moment only the DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)
12,Please note that this is an unassembled kit and Basic soldering skills are needed.
 
A4988 Stepper Motor Driver:
 
1,A4988 Stepper Motor Driver Board is a breakout board for Allegro's A4988 DMOS Micro stepping Driver with Translator and Overcurrent Protection; please read the A4988 datasheet carefully before using this product.
Low RDS (On) Output
2,Automatic current decay mode  detection / selection
3,Mix with slow current decay modes
4,Synchronous rectification for low power dissipation
5,Internal UVLO
6,Crossover-current protection
7,3.3 and 5 V compatible logic supply
8,Thermal shutdown circuitry
9,Ground fault protection
10,Load short-circuit protection
11,Five selectable step modes: full,  1/2, 1/4, 1/8 and 1/16
 
 
UNO R3 Board for Arduino:
MCU: ATmega328
USB interface: ATmega16U2
Operating voltage: 5V
Digital I/O pins: 14 (including 6  with PWM capability)
Analog input pins: 6
I-I/O pin output current: 40mA max
3.3V output current: 150mA max
Flash memory: 32kB (0.5kB used by bootloader- included)
Static RAM (SRAM): 2kB
EEPROM: 1kB
Clock speed: 16MHz
 
 

 
 CNC Shield Board:
 
1,Latest CNC Shield Version 3.0 for Arduino.
2,GRBL 0.9 compatible. (Open source firmware that runs on an UNO for Arduino that turns G-code commands into stepper signals)
3,PWM Spindle and direction pins
4,4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a  full 4th axis with custom firmware using pins D12 and D13)
5,2 x End stops for each axis (6 in total) 
6,Coolant enable 
7,Uses removable A4988 or DRV8825 compatible stepper drivers
8,Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to  1/32 micro-stepping ) 
9,Compact design.
10,Stepper Motors can be connected with 4 pin molex connectors or soldered in place. 
11,Runs on 12-36V DC. (At the moment only the DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)
12,Please note that this is an unassembled kit and Basic soldering skills are needed.
 
A4988 Stepper Motor Driver:
 
1,A4988 Stepper Motor Driver Board is a breakout board for Allegro's A4988 DMOS Micro stepping Driver with Translator and Overcurrent Protection; please read the A4988 datasheet carefully before using this product.
Low RDS (On) Output
2,Automatic current decay mode  detection / selection
3,Mix with slow current decay modes
4,Synchronous rectification for low power dissipation
5,Internal UVLO
6,Crossover-current protection
7,3.3 and 5 V compatible logic supply
8,Thermal shutdown circuitry
9,Ground fault protection
10,Load short-circuit protection
11,Five selectable step modes: full,  1/2, 1/4, 1/8 and 1/16
 
 
UNO R3 Board for Arduino:
MCU: ATmega328
USB interface: ATmega16U2
Operating voltage: 5V
Digital I/O pins: 14 (including 6  with PWM capability)
Analog input pins: 6
I-I/O pin output current: 40mA max
3.3V output current: 150mA max
Flash memory: 32kB (0.5kB used by bootloader- included)
Static RAM (SRAM): 2kB
EEPROM: 1kB
Clock speed: 16MHz
 
 

 
 CNC Shield Board:
 
1,Latest CNC Shield Version 3.0 for Arduino.
2,GRBL 0.9 compatible. (Open source firmware that runs on an UNO for Arduino that turns G-code commands into stepper signals)
3,PWM Spindle and direction pins
4,4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a  full 4th axis with custom firmware using pins D12 and D13)
5,2 x End stops for each axis (6 in total) 
6,Coolant enable 
7,Uses removable A4988 or DRV8825 compatible stepper drivers
8,Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to  1/32 micro-stepping ) 
9,Compact design.
10,Stepper Motors can be connected with 4 pin molex connectors or soldered in place. 
11,Runs on 12-36V DC. (At the moment only the DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)
12,Please note that this is an unassembled kit and Basic soldering skills are needed.
 
A4988 Stepper Motor Driver:
 
1,A4988 Stepper Motor Driver Board is a breakout board for Allegro's A4988 DMOS Micro stepping Driver with Translator and Overcurrent Protection; please read the A4988 datasheet carefully before using this product.
Low RDS (On) Output
2,Automatic current decay mode  detection / selection
3,Mix with slow current decay modes
4,Synchronous rectification for low power dissipation
5,Internal UVLO
6,Crossover-current protection
7,3.3 and 5 V compatible logic supply
8,Thermal shutdown circuitry
9,Ground fault protection
10,Load short-circuit protection
11,Five selectable step modes: full,  1/2, 1/4, 1/8 and 1/16
 
 
UNO R3 Board for Arduino:
MCU: ATmega328
USB interface: ATmega16U2
Operating voltage: 5V
Digital I/O pins: 14 (including 6  with PWM capability)
Analog input pins: 6
I-I/O pin output current: 40mA max
3.3V output current: 150mA max
Flash memory: 32kB (0.5kB used by bootloader- included)
Static RAM (SRAM): 2kB
EEPROM: 1kB
Clock speed: 16MHz
 
 

What's new about V3.0.0 Optimize the circuit Add Deep-Sleep jumper. Default firmware: lastest MicroPython ESP8266 firmware. Features 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0) 1 analog input(3.2V max input) a Micro USB connection Compatible with for MicroPython, for Arduino, for Nodemcu lots of Shields
Package include: Long femalepinsx2pcs Short female pins x2pcs Normal pins x2pcs for WEMOS D1 mini Boardx1pcs
 
 

 AC 100V-240V Converter Adapter DC 9V 1A Power Supply EU Plug DC 5.5mm x 2.1mm 1000mA for Arduino UNO MEGA

5V-3V IIC UART SPI Four Channel Level Converter Module for Arduino 
 
Description:
Four MOS tube : four channel , two-way conversation 3V and 5V
The power input with anti-reverse protection, integrated 3.3VLDO,and provide current less than 150mA
With power indicate
Used for UART/IIC/1-WIRE/SPI 
 
 
 
 

 
ESP8266-12F is an enhanced version ESP8266-12, improve peripheral circuits, four plate board technology, enhanced impedance matching, the signal output is better, whether it is stable or anti-jamming capability, PCB antenna through specialized laboratory testing, a perfect match after ROHS certification, have been greatly improved! For users before selecting the ESP-12, it does not matter even if the product has been made, enhanced version is fully compatible with previous firmware, the pin has added the ESP-12 on the basis of six IO ports, SPI mouth leads, develop more convenient, application more extensive!

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/
 
One, Introduction
This expansion board as a driver expansion board, can be used for engraving machines, 3D printers.
It is a total of four slots, can drive four A4988 stepper motor. Each road stepper motors only need two IO ports. In other words, six IO ports can be well managed three stepper motors. Very convenient to use.
 
Two, UNO for Arduino module IO port correspondence introduction.
 
IO corresponding figure above
 
UNO for Arduino---------------------- expansion board
8 ------------------------ EN ( stepper motor driver enable , active low )
7 ----------------------- Z.DIR (Z -axis direction control )
6 ----------------------- Y.DIR (Y -axis direction control )
5 ----------------------- X.DIR (X -axis direction control )
4 ---------------------- Z.STEP (Z -axis stepper control )
3 ---------------------- Y.STEP (Y -axis stepper control )
2 ---------------------- X.STEP (X -axis stepper control )
 

Warm prompt:
 
Dear buyer, Our cheapst transportation services Econmic 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.
 
For example:
like this

Product Description Hardware Specifications Chipset ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor FLASH QSPI flash 4MB / PSRAM 8MB SRAM 520 kB SRAM Button Reset USB to TTL CP2104 Modular interface UART.SPI.SDIO.I2C.LED PWM.TV PWM.I2S.IRGPIO.capacitor touch sensor.ADC.DACLNA pre-amplifier On-board clock 40MHz crystal oscillator Working voltage 2.7V-3.6V Working current About 70mA Sleep current About 300uA SIM card Only supports Nano SIM card Working temperature range -40° ~ 85° Size&Weight 78.83mm*28.92mm*8.06mm(11.77g) Power Supply Specifications Power Supply USB 5V/1A Charging current 500mA Battery 3.7V lithium battery JST Connector 2Pin 1.25mm USB Type-C Wi-Fi Standard FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC(esp32 chip) Protocol 802.11 b/g/n(802.11n,speed up to150Mbps)A-MPDU and A-MSDU polymerization,support 0.4μS Protection interval Frequency range 2.4GHz~2.5GHz(2400M~2483.5M) Transmit Power 22dBm Communication distance 300m Bluetooth Protocol meet bluetooth v4.2BR/EDR and BLE standard Radio frequency with -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH Audio frequency CVSD&SBC audio frequency Software specification Wi-Fi Mode Station/SoftAP/SoftAP Station/P2P Security mechanism WPA/WPA2/WPA2-Enterprise/WPS Encryption Type AES/RSA/ECC/SHA Firmware upgrade UART download/OTA(Through network/host to download and write firmware) Software Development Support cloud server development /SDK for user firmware development Networking protocol IPv4.IPv6.SSL.TCP/UDP/HTTP/FTP/MQTT User Configuration AT Instruction set, cloud server, android/iOSapp OS FreeRTOS More Information:https://github.com/Xinyuan-LilyGO/TTGO-T-Call

1, the current sensor chip ACS712ELC-050; ACS712ELC - 20; ACS712ELC - 30;
2, pin 5 v power supply, the onboard power light;
3 30A plus or minus current can be measured, module, the corresponding analog output 100 mv/A;
4, no current through testing, the output voltage is VCC / 2;
5, the size of the PCB board: 31 (mm) x13 (mm);

Description:
 
 
The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board.
The USB transceiver inside the 32U4 allows us to add
USB connectivity on-board and do away with bulky external USB interface.
 
This tiny little board does all work for Arduino tricks that you're familiar with:
4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as
hardware serial connections Rx and Tx. Running at 16MHz and 5V,
this board will remind you a lot of your other favorite for Arduino-compatible boards but this little guy can go just about anywhere.
There is a voltage regulator on board so it can accept voltage up to 6V(Blue board)/18V(Black board).
If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.
 
This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled.
We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit.
 
 
 
Features:
 
 
ATMega 32U4 running at 5V/16MHz
Supported under for Arduino IDE v1.0.1
On-Board MINI USB connector for programming
4 x 10-bit ADC pins
12 x Digital I/Os (5 are PWM capable)
Rx and Tx Hardware Serial Connections
Our Smallest for Arduino-Compatible Board Yet!

Description:
 
 
The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board.
The USB transceiver inside the 32U4 allows us to add
USB connectivity on-board and do away with bulky external USB interface.
 
This tiny little board does all work for Arduino tricks that you're familiar with:
4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as
hardware serial connections Rx and Tx. Running at 16MHz and 5V,
this board will remind you a lot of your other favorite for Arduino-compatible boards but this little guy can go just about anywhere.
There is a voltage regulator on board so it can accept voltage up to 6V(Blue board)/18V(Black board).
If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.
 
This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled.
We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit.
 
 
 
Features:
 
 
ATMega 32U4 running at 5V/16MHz
Supported under for Arduino IDE v1.0.1
On-Board MINI USB connector for programming
4 x 10-bit ADC pins
12 x Digital I/Os (5 are PWM capable)
Rx and Tx Hardware Serial Connections
Our Smallest for Arduino-Compatible Board Yet!

Description:
 
 
The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board.
The USB transceiver inside the 32U4 allows us to add
USB connectivity on-board and do away with bulky external USB interface.
 
This tiny little board does all work for Arduino tricks that you're familiar with:
4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as
hardware serial connections Rx and Tx. Running at 16MHz and 5V,
this board will remind you a lot of your other favorite for Arduino-compatible boards but this little guy can go just about anywhere.
There is a voltage regulator on board so it can accept voltage up to 6V(Blue board)/18V(Black board).
If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.
 
This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled.
We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit.
 
 
 
Features:
 
 
ATMega 32U4 running at 5V/16MHz
Supported under for Arduino IDE v1.0.1
On-Board MINI USB connector for programming
4 x 10-bit ADC pins
12 x Digital I/Os (5 are PWM capable)
Rx and Tx Hardware Serial Connections
Our Smallest for Arduino-Compatible Board Yet!

Description:
 
 
The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board.
The USB transceiver inside the 32U4 allows us to add
USB connectivity on-board and do away with bulky external USB interface.
 
This tiny little board does all work for Arduino tricks that you're familiar with:
4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as
hardware serial connections Rx and Tx. Running at 16MHz and 5V,
this board will remind you a lot of your other favorite for Arduino-compatible boards but this little guy can go just about anywhere.
There is a voltage regulator on board so it can accept voltage up to 6V(Blue board)/18V(Black board).
If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.
 
This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled.
We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit.
 
 
 
Features:
 
 
ATMega 32U4 running at 5V/16MHz
Supported under for Arduino IDE v1.0.1
On-Board MINI USB connector for programming
4 x 10-bit ADC pins
12 x Digital I/Os (5 are PWM capable)
Rx and Tx Hardware Serial Connections
Our Smallest for Arduino-Compatible Board Yet!

Size: 46 mmx23mmx10mm / 1.81 \ "x0.91 \" x0.39 \ "(inch) (approx)
 
The Features:
1. The Fixed turn the lamp current to 0.1 times the value of the constant current (at the when 2 identify been the 'is full);
2. Increased input reverse polarity for protection, diode;
3. Using dedicated reference for IC, and high - precision from the resistor, so that the constant current is more stable, (20 degrees to 100 degrees, the constant current 1 a, when the temperature drift of less than 1% ).
 
Particularly suitable for the LED driver
* High - power LED constant current drive
* Lithium 'charger (o ferroelectric)
* 4 v, 6 v, 12 v, 14 v, 24 v 'charger
* Nickel cadmium, Nickel metal hydride 'pack charger
For * Solar panels and wind turbines
 
Specifications:
* the Module Properties: non - isolated constant current and voltage of the Module
* Rectification: non - synchronous Rectification
* Input voltage: 7 v - 35 v
* the Output voltage: 1.25 V - 30 V
* the Output current: adjustable maximum 3 a
* Conversion efficiency: 92% (the highest)
* Switching frequency, 150 KHZ
* the Output ripple: 50 mv (Max) 20 m bandwidth
* the Load Regulation: plus or minus 0.5%
* Voltage Regulation: plus or minus 2.5%
* Operating Temperature: - 40 ° to 85 °
 
'the use:
* Make sure of the voltage and current of the 'you need to charge
* Adjust the constant voltage potentiometer to make the output voltage same to the charge voltage
* Potentiometer Adjustment Direction: Clockwise (happens), counterclockwise (decrease)
* Use the multimeter in 10 a current scale to measure the output short - circuit current, and adjust the current potentiometer to make sure the output current to the expected charging current value
* The charge current of transfer lamp is The default 0.1 times of The charging current (constant current value)
* Connected to the 'and try to charging (for previous five steps, the module input terminal is Connected to the power source, the output load is NOT Connected to batteries).
 
LED Constant Current Driver Use:
* Make sure operating current and Max operating Voltage of the LED you need to drive.
* Adjust the constant voltage potentiometer to make sure the output voltage is up to the LED Max operating voltage.
* Use the multimeter in 10 a current scale to measure the output short - circuit current, and adjust the current potentiometer. To make sure the output current to the expected LED operating current.
* Join the LED test (For the above three steps, the module input terminal is connected to the power source, the output load is NOT connected to the LED).
 
The scope of application:
Charging for lithium ion batteries: the when the lithium ion 'voltage is low. If use the constant voltage Charging directly. Due to pressure is too large, leading to the' damage. So from the beginning to use the constant current Charging. When Charging the to a certain, automatic switch back to the constant voltage Charging.
 
Charging curve as to: red is current, blue is voltage.
 
 

Name: MPU-6050 modules (three-axis gyroscope three-axis accelerometer)
Use the chip: MPU-6050
Power supply :3-5v (internal low dropout regulator)
Communication modes: standard IIC communications protocol
Chip built-in 16bit AD converter, 16-bit data output
Gyroscope range: ± 250 500 1000 2000 ° / s
Acceleration range: ± 2 ± 4 ± 8 ± 16g
Immersion Gold PCB machine welding process to ensure quality
Pin pitch 2.54mm

Features:
This is a brand new MCP2515 CAN bus module TJA1050 receiver SPI protocol
Compatible with Arduino based micro-controller projects.
Specifications:
Support CAN V2.0B specification, the communication speed 1Mb / S
0 to 8-byte data field
Three frames - standard, expand the frame and remote
DC5V power supply module & SPI interface protocol control
120 ohm termination resistors, Impedance matching, ensure drive capacity, long-distance data transmission against signal radiation
Module dimensions 4. 4 x 2.8 cm/1.57*1.1" (approx.)
Working Current - typ. 5mA & 1μA standby current
Working Temperature - (Industrial grade) -40°C - 85°C

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

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

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.
 
 
 

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.
 
 
 

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.
 
 
 

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.
 
 
 

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.
 
 
 

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.
 
 
 

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.
 
 
 

 
Note : more than 3A current discharge products  rate is more than 3C  Ratio calculation formula : 1C rate of the battery , 2000 capacity is  equal to 2AH 1 2A maximum working current . 3C ratio battery , 2000 capacity is equal to 2AH * 3 = 6A maximum  working current . In use battery heats is ratio is not applicable to , this kind of situatic  can't use for a long time , the battery will soon be damaged
Note 1 : in accordance with the diagram wiring 0 V , 3 . 7V ( b- ) ( B1 )  ( B2 ) , 11 . 1 V , 7.4 V ( B ) don't deliberately short circuit
Note 2 : after connected line need to recharge , just can have output
Note 3 : 3 series battery , please make sure that each set of battery  voltage , if not , please separate with each set of batteries in series . Discharge test , the battery voltage drops quickly is a bad battery .
Note : don't put the good cells and in bad ! Three groups of battery  capacity / internal resistance as close as possible ! ( 2 1 good battery ,  the use effect of poor battery = the use effect of three bad battery )

 
Note : more than 3A current discharge products  rate is more than 3C  Ratio calculation formula : 1C rate of the battery , 2000 capacity is  equal to 2AH 1 2A maximum working current . 3C ratio battery , 2000 capacity is equal to 2AH * 3 = 6A maximum  working current . In use battery heats is ratio is not applicable to , this kind of situatic  can't use for a long time , the battery will soon be damaged
Note 1 : in accordance with the diagram wiring 0 V , 3 . 7V ( b- ) ( B1 )  ( B2 ) , 11 . 1 V , 7.4 V ( B ) don't deliberately short circuit
Note 2 : after connected line need to recharge , just can have output
Note 3 : 3 series battery , please make sure that each set of battery  voltage , if not , please separate with each set of batteries in series . Discharge test , the battery voltage drops quickly is a bad battery .
Note : don't put the good cells and in bad ! Three groups of battery  capacity / internal resistance as close as possible ! ( 2 1 good battery ,  the use effect of poor battery = the use effect of three bad battery )

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

You just found the perfect I2C sensor, and you want to wire up two or three or more of them to your when you realize "Uh oh, this chip has a fixed I2C address, and from what I know about I2C, you cannot have two devices with the same address on the same SDA/SCL pins!" Are you out of luck? You would be, if you didn't have this ultra-cool CJMCU-9548 1-to-8 I2C multiplexer! Finally, a way to get up to 8 same-address I2C devices hooked up to one microcontroller - this multiplexer acts as a gatekeeper, shuttling the commands to the selected set of I2C pins with your command. Using it is fairly straight-forward: the multiplexer itself is on I2C address 0x70 (but can be adjusted from 0x70 to 0x77) and you simply write a single byte with the desired multiplexed output number to that port, and bam - any future I2C packets will get sent to that port. In theory, you could have 8 of these multiplexers on each of 0x70-0x77 addresses in order to control 64 of the same-I2C-addressed-part. Like all Adafruit breakouts, we put this nice chip on a breakout for you so you can use it on a breadboard with capacitors, and pullups and pulldowns to make usage a snap. Some header is required and once soldered in you can plug it into a solderless-breadboard. The chip itself is 3V and 5V compliant so you can use it with any logic level.

The camera is compatible with Raspberry Pi 4B / 3B / 3B.
Support the installation of infrared fill light and infrared night vision.
Support focusing, you can adjust me according to the distance of the incoming object.
For the HD/night vision cameras, if the night vision mode cannot be switched automatically, please switch manually.
The switching method is as follows:
1. The default non-night vision mode
2. Switch night vision mode
Execute the command: Sudo nano /boot/config.txt
Add disable_camera_led=1   --Non-night vision mode
Add disable_camera_led=2   --Night vision mode
"Ctrl O", press Enter, enter "Ctrl X" to exit and save
Then restart, enter to complete the switch.
100% Brand New and High Quality
Shape & Color: Same as the picture show
 

The camera is compatible with Raspberry Pi 4B / 3B / 3B.
Support the installation of infrared fill light and infrared night vision.
Support focusing, you can adjust me according to the distance of the incoming object.
For the HD/night vision cameras, if the night vision mode cannot be switched automatically, please switch manually.
The switching method is as follows:
1. The default non-night vision mode
2. Switch night vision mode
Execute the command: Sudo nano /boot/config.txt
Add disable_camera_led=1   --Non-night vision mode
Add disable_camera_led=2   --Night vision mode
"Ctrl O", press Enter, enter "Ctrl X" to exit and save
Then restart, enter to complete the switch.
100% Brand New and High Quality
Shape & Color: Same as the picture show
 

The camera is compatible with Raspberry Pi 4B / 3B / 3B.
Support the installation of infrared fill light and infrared night vision.
Support focusing, you can adjust me according to the distance of the incoming object.
For the HD/night vision cameras, if the night vision mode cannot be switched automatically, please switch manually.
The switching method is as follows:
1. The default non-night vision mode
2. Switch night vision mode
Execute the command: Sudo nano /boot/config.txt
Add disable_camera_led=1   --Non-night vision mode
Add disable_camera_led=2   --Night vision mode
"Ctrl O", press Enter, enter "Ctrl X" to exit and save
Then restart, enter to complete the switch.
100% Brand New and High Quality
Shape & Color: Same as the picture show
 

The camera is compatible with Raspberry Pi 4B / 3B / 3B.
Support the installation of infrared fill light and infrared night vision.
Support focusing, you can adjust me according to the distance of the incoming object.
For the HD/night vision cameras, if the night vision mode cannot be switched automatically, please switch manually.
The switching method is as follows:
1. The default non-night vision mode
2. Switch night vision mode
Execute the command: Sudo nano /boot/config.txt
Add disable_camera_led=1   --Non-night vision mode
Add disable_camera_led=2   --Night vision mode
"Ctrl O", press Enter, enter "Ctrl X" to exit and save
Then restart, enter to complete the switch.
100% Brand New and High Quality
Shape & Color: Same as the picture show
 

The camera is compatible with Raspberry Pi 4B / 3B / 3B.
Support the installation of infrared fill light and infrared night vision.
Support focusing, you can adjust me according to the distance of the incoming object.
For the HD/night vision cameras, if the night vision mode cannot be switched automatically, please switch manually.
The switching method is as follows:
1. The default non-night vision mode
2. Switch night vision mode
Execute the command: Sudo nano /boot/config.txt
Add disable_camera_led=1   --Non-night vision mode
Add disable_camera_led=2   --Night vision mode
"Ctrl O", press Enter, enter "Ctrl X" to exit and save
Then restart, enter to complete the switch.
100% Brand New and High Quality
Shape & Color: Same as the picture show
 

The camera is compatible with Raspberry Pi 4B / 3B / 3B.
Support the installation of infrared fill light and infrared night vision.
Support focusing, you can adjust me according to the distance of the incoming object.
For the HD/night vision cameras, if the night vision mode cannot be switched automatically, please switch manually.
The switching method is as follows:
1. The default non-night vision mode
2. Switch night vision mode
Execute the command: Sudo nano /boot/config.txt
Add disable_camera_led=1   --Non-night vision mode
Add disable_camera_led=2   --Night vision mode
"Ctrl O", press Enter, enter "Ctrl X" to exit and save
Then restart, enter to complete the switch.
100% Brand New and High Quality
Shape & Color: Same as the picture show
 

The camera is compatible with Raspberry Pi 4B / 3B / 3B.
Support the installation of infrared fill light and infrared night vision.
Support focusing, you can adjust me according to the distance of the incoming object.
For the HD/night vision cameras, if the night vision mode cannot be switched automatically, please switch manually.
The switching method is as follows:
1. The default non-night vision mode
2. Switch night vision mode
Execute the command: Sudo nano /boot/config.txt
Add disable_camera_led=1   --Non-night vision mode
Add disable_camera_led=2   --Night vision mode
"Ctrl O", press Enter, enter "Ctrl X" to exit and save
Then restart, enter to complete the switch.
100% Brand New and High Quality
Shape & Color: Same as the picture show
 

Waterproof 2S 3S 4S Li-ion Lithium Battery Capacity Indicator Electricity Power LED Display Board Meter Tester 8.4V 12.6V 16.8V

Product introduction:
1, this module is in line with international safety standard, control areas and load area have the isolation groove;
2, USES the loose quality goods relay;
3, have power and relay operation instructions, and bright, disconnect the dawn;
4, signal input signal, the public end and will often start conduction;
5, can be used as a microcontroller development board module, can be used as a home appliance control;
6, dc or ac signal control, can control 220 v ac load;
7 and one often opened a normally closed contact;
8, blue KF301 terminal line more convenient.

Features :
100% Brand New
Voltage: DC 6-36V
Output current: 300mA
3 Wire
Polarity: NPN
Dimention: M12x10x55mm
Detection Distance: 4 mm
Ouput Status: Normally Open
Part number: LJ12A3-4-Z/BX
Detection objects: Conductor

Description:
 
 
The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board.
The USB transceiver inside the 32U4 allows us to add
USB connectivity on-board and do away with bulky external USB interface.
 
This tiny little board does all work for Arduino tricks that you're familiar with:
4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as
hardware serial connections Rx and Tx. Running at 16MHz and 5V,
this board will remind you a lot of your other favorite for Arduino-compatible boards but this little guy can go just about anywhere.
There is a voltage regulator on board so it can accept voltage up to 6V(Blue board)/18V(Black board).
If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.
 
This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled.
We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit.
 
 
 
Features:
 
 
ATMega 32U4 running at 5V/16MHz
Supported under for Arduino IDE v1.0.1
On-Board MINI USB connector for programming
4 x 10-bit ADC pins
12 x Digital I/Os (5 are PWM capable)
Rx and Tx Hardware Serial Connections
Our Smallest for Arduino-Compatible Board Yet!

Description:
 
 
The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board.
The USB transceiver inside the 32U4 allows us to add
USB connectivity on-board and do away with bulky external USB interface.
 
This tiny little board does all work for Arduino tricks that you're familiar with:
4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as
hardware serial connections Rx and Tx. Running at 16MHz and 5V,
this board will remind you a lot of your other favorite for Arduino-compatible boards but this little guy can go just about anywhere.
There is a voltage regulator on board so it can accept voltage up to 6V(Blue board)/18V(Black board).
If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.
 
This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled.
We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit.
 
 
 
Features:
 
 
ATMega 32U4 running at 5V/16MHz
Supported under for Arduino IDE v1.0.1
On-Board MINI USB connector for programming
4 x 10-bit ADC pins
12 x Digital I/Os (5 are PWM capable)
Rx and Tx Hardware Serial Connections
Our Smallest for Arduino-Compatible Board Yet!

Description:
 
 
The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board.
The USB transceiver inside the 32U4 allows us to add
USB connectivity on-board and do away with bulky external USB interface.
 
This tiny little board does all work for Arduino tricks that you're familiar with:
4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as
hardware serial connections Rx and Tx. Running at 16MHz and 5V,
this board will remind you a lot of your other favorite for Arduino-compatible boards but this little guy can go just about anywhere.
There is a voltage regulator on board so it can accept voltage up to 6V(Blue board)/18V(Black board).
If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.
 
This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled.
We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit.
 
 
 
Features:
 
 
ATMega 32U4 running at 5V/16MHz
Supported under for Arduino IDE v1.0.1
On-Board MINI USB connector for programming
4 x 10-bit ADC pins
12 x Digital I/Os (5 are PWM capable)
Rx and Tx Hardware Serial Connections
Our Smallest for Arduino-Compatible Board Yet!