DMX-512 RGB LED Wash Light Control Board

Step 4 Interconnect Headers

Polarized headers allows wires to be plugged and unplugged from the PCB easily. This project has a lot of switches, potentiometers, mic, that aren't on the board and have wires running to them. The wires are connected to crimps and the crimps are slid into the housings, more details on Step 6

Depending on kit variation some or all of these headers may be included. They are not necessary but make things easier. With out them the wires of the switches ect will need to soldered directly onto the board, making installation harder.

I would recommend to try not to use a header and just solder the wires in directly to the PCB where possible.


There is an illustration of how the headers should be placed on the board. They have a polarized friction lock so a switch or voltage input cannot be plugged in backwards later.


There is a 12-pin, 6-pin, 3-pin, and 3x 2-pin headers to solder.

Press them firmly in, flush with the PCB and start soldering. Careful not to bridge solder joints.

- The 12-pin is for the 10-position DIP switch for DMX Address Selection and Mode Select.

- The 6-pin header is for the Mode Switch and Speed Potentiometer.

- The 3-pin is for XLR hook-ups

- A 2-pin header labled PWR is for voltage input, polarity marked on the PCB
*UPDATE: The polarity markings are reversed on the PCB

- The last two 2-pin headers are for sound input(rheostat and microphone), it is optimal to not install these headers and to wire the rheostat and mic directly PCB.