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Step 10 - DMX connection and testing

If you are using the 1.2 PCB or using the 1.3 PCB without the case the last thing that needs to be done is to connect the PCB to a DMX socket. I always use Neutrik XLR connectors for my lighting and audio cables. I have always found them to be very high quality, and I have never had a problem with one. There are of course cheaper alternatives those on a tight budget.

The correct pinout is shown in the diagram on the right. The same pinout is used on both PCBs. This uses the spare data pair on the 5 pin XLR socket for the input (pins 4 & 5). You could of course take this to a second XLR plug, in which case you would use pins 2 and 3 instead of 4 and 5 (and pin 1 to 0v)

For testing I made a simple DMX lead that connects the output to the input. A Test Application is available from the Software section. There is also a windows version available in the Links section.

DMX pinout
DMX Header pinout

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