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Rgb dot matrix board & driver board based on atmega328

Rgb dot matrix board & driver board based on atmega328 (uno)


Rgb dot matrix board & driver board based on atmega328 (uno).

The vma439 is a rgb led matrix driver platform based on arduino uno (atmega328p). it gains three 8+6-bit channels of hardware pwm control of the led's. this design is to make user easily modify or write the firmware of vma439 by arduino ide..


  • module dimensions: 60 x 60 x 16 mm
  • Microprocessor: Atmega328P
  • Indicator: PWR State
  • power supply: 5 to 7.5 VDC
  • Cascade power connector: Terminal Blocks
  • program interface: UART/ISP (VMA440)
  • expansion socket: 100 mil bended pin header pair
  • Communication protocols: UART/IIC
  • current consumption (except LED matrix): max. 40 mA
  • drive current (every channel): max. 500 mA
  • drive current ( every dot): max. 58 mA
  • circuit response time: 10 ms
  • RGB LED matrix colour resolution per dot: 16 M
  • UART baud rate: 9600 - 115200


  • 8 bits colours support with 6 bits correction for each colour in every dots
  • hardware 16 MHz PWM support
  • Without any external circuits, play and shine
  • Dedicated GPIO and ADC interface
  • Hardware UART and IIC communication with easy cascading
  • 24 constant current channels of 100 mA each
  • 8 super source driver channels of 500 mA each
  • driver board is based on ATMEGA328 (UNO) and works with IDE

 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product