Build a DMX FeatherWing to Control Lights with a Feather M0

Glen Atkins writes about his latest project:

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This project uses an Adafruit Feather M0 Basic Proto board to control a group of Color Kinetics or other RGB light fixtures using the DMX-512 protocol. We’ll build a DMX-512 interface FeatherWing then connect it to the Feather M0 using a Particle Ethernet FeatherWing. Once the hardware is built and assembled, we’ll write software with a web-based GUI to generate RGB lighting effects and control the attached RGB lights using the DMX protocol. By modifying the software on the Feather M0, different effects can be generated and added to the web-based GUI.

Required Materials

The materials required for this project are:

The DMX FeatherWing

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The photo above shows the assembled DMX FeatherWing. The next few sections are dedicated to describing and building the DMX FeatherWing hardware.

Circuit Design and Schematic

DMX-512 FeatherWing schematic.

To make sure everything conformed to the FeatherWing form factor, I started with the Eagle design for the Adafruit Power Relay FeatherWing. I deleted everything from the schematic and board except for the FeatherWing symbol and dimension lines. The FeatherWing symbol includes the board outline layer and the holes for the 0.1″ pitch, 0.025″ square post headers that connect the FeatherWing to other boards. I saved this as a new file then started my design.

Build a DMX FeatherWing to Control Lights with a Feather M0