BestKitchenLightsEver™

The final board.

It takes about 8.5 to 10W, depending on the supply voltage. It is designed to run at 660mA. The LEDs are grouped in sets of 4, which requires about 12V to run at a high enough current. The LED driver takes about 0.7V off, so we're looking at a real 12.5V to 13V on the supply voltage connectors. Each group can be controlled individually, but currently all 8 channels are treated as one. The PWM is generated by a timer compare match interrupt. The data is sent via SPI to the LED driver.