Review on 🔌 Arduino Compatible CQRobot DMX Shield with MAX485 Chipset (RDM Capable) for DMX512 Network Integration, LED/Music Remote Device Management, and Extended DMX Master Capabilities by David Hill

This works well for Chauvet DJ Followspot 400G control. The headlight has a manual mode, but this uses buttons to increase and decrease the brightness in large increments. There is no fine control. I wired this up using an Arduino Uno and a couple of potentiometers. This allows for much more precise dimming control. This is a low level DMX interface as it is not isolated. Since there is only one element in my DMX chain, I didn't think about it. It would not be safe to use it in a larger installation. You really need an isolated device to do this. I used Github's DmxSimple library. I used pins 2 and 3 for signaling so I could use Serial.print() for debugging. Don't forget to set the DE line to high. This Chauvet 400g uses the selected DMX channel (I used channel 1) for color selection and the next higher channel for dimmer level.