I recently ran out of my PCB business cards. Rather than just get another run printed, I designed a new one. Inspired by using DMX512 with a fenode board, the new cards are Arduino-compatible three channel controllers with an RS-485 interface.
As DMX is not supposed to be used with potentially dangerous devices, these boards are meant to turn 12V RGB LED strips into cheap DMX fixtures. Why a separate load power input (suitable for a deadman switch) remains on the board is left as an exercise for the reader.
- Arduino compatible
- Programmable via 6-pin FTDI header
- Three DC load channels switched via MOSFET
- DC load power is optoisolated from the control system power
- Each output channel has a status LED for easy debugging
- Header pins for DC load power and three output channels, suitable for common anode LED strips
- All Arduino pins are broken out
- RS-485 serial interface, suitable for DMX512
- 8P8C connectors for serial in/out
- Termination resistor with jumper
- It has all my contact information on it so you know how to get in touch with me