Current Source Plug
The Current Source Plug is a small board based on the AP8803 chip to provide a constant current to two independent sets of power LEDs of 350 mA or 700 mA. The two I/O pins can be used to turn the LEDs on or off, and for dimming via PWM. This plug uses a very efficient switching down-convertor ("buck" topology) supply - instead of converting surplus voltage to heat, as simple dropper resistors would do.
The PCB only variant contains just the board for the Current Source Plug. No parts, no headers.
As connectors you can use a Plug Headers set with 10 male and 10 female 6-pin headers, which makes it easy to connect multiple plugs and JeeNodes in a “standard” way. Or you can solder the board directly in place for more permanent use.
The documentation and full design details are freely available.