I needed a Grinch dimmer fast and I wasn’t able to buy a PCB from RPM in a hurry, so I hacked one.

RPM’s Grinch Dimmer

So this is how I made it:

Grinch Dimmer top

next the Bottom – it isn’t as complicated or hard as it may look!

the “Rats nest” on the bottom

I use my on Lay out for the ISP connector. But the standar 2×3 pin header can still be used.


Connections: DMX on the Left and Grinch on the right

External DMX

External RJ45 for DMX in & Out