Arduino RDM Relay

So far I have been using DMX but that meant I would have to reprogram my arduino every time I want to change the DMX start address so I decided to switch to RDM.

• MAX485 (RS485 tranciever)
• Female and male xlr's
• Arduino uno rev3
• Relay of your choice
• N-channel mosfet
• led
• 4.7k Ω resistor
• 220 Ω resistor
• Breadboard or pcb
• Jumper wires
• DMX/RDM tester
• 12 volt power supply

• install the DMXSerial2 library using the library manager
• upload the code

For testing this device you will need an RDM tester or controller

• plug your RDM relay into your RDM tester or controller
• power them both up and then you can check if the device is listed in your RDM tester or controllers device list