ARDUINO UNO R3 Compatible CH340G USB-serial - blue, with cable

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Arduino Uno compatible microcontroller board based on the ATmega328. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adaptor or battery to get started.

The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U programmed as a USB-to-serial converter.

This new enhanced version includes additional holes to fit male header strips (included) next to the standard female headers plus additional serial port and I2C bus access points.



  • digital I/O pins: 14 (of which 6 provide PWM output)
  • analogue input pins: 6
  • Board components include: 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button
  • USB lead supplied (colour may vary from image)


  • Arduino UNO R3 CH340G
    1. Model Type: UNO Rev R3
    2. Microcontroller Chip: ATmega328
    3. Color: Blue
    4. Input Voltage(Recommended): 7-12V
    5. Input Voltage (limit): 6-20V
    6. Operating Voltage: 5
    7. Analog I/O Pins: 6
    8. Digital I/O Pins: 14 (of which 6 provide PWM output)
    9. PWM Digital I/O Pins: 6
    10. DC Current per I/O Pin: DC Current per I/O Pin: 40 mA; DC Current for 3.3V Pin: 50 mA
    11. Clock Speed: 16 MHz
    12. EEPROM: 1 KB (ATmega328)
    13. Flash Memory: 32 KB (ATmega328) of which 0.5 KB used by bootloader
    14. PWM Output Pins: 6
    15. SRAM: 2 KB (ATmega328)
    16. Power Supply Option: DC Jack or USB
    17. On Board LEDs: Yes
    18. Operating Temperature (°C): -40 to +90
    19. Dimensions in mm (LxWxH): 75 x 54 x 12
    20. Weight (gm): 26

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