This RGB driver module can control independently 3 LEDs or a single RGB LED. With the use of PWM, the RGB LED can be controlled to produce many custom color combinations such as orange, soft red, green and more.

Specifications

• On-board power LED and reset button
• Working Voltage Range: 3.3 V to 5 V
• All pins have been routed out for direct connection to microcontroller
• PCB Size: 37.2 x 22.5 mm

Communication Protocol

• Setup the UART communication baud rate at 9600 bps
• Send the initialization byte 0x1F
• Send the channel number (1: red, 2: green, 3: blue)
• Send the brightness value (0 - 100%)
• Send the checksum (the sum of the first 3 data bytes)

For example, for setting the red LED brightness to 1%, you would have to send the following byte sequence: 1F 01 01 21 For setting the brightness of the blue LED to 50%, you would have to send the following byte sequence: 1F 02 32 53 For setting the blue LED brightness to 99% you would have to send the following byte sequence: 1F 03 63 85