RS485 Board

GitHub hardware link

RS485 board is center with a red arrow pointing to it.

Overview

The RS485 board enables serial communication between the Raspberry Pi (server) and the Arduinos (controlling the parameters).

Troubleshooting

The RS485 board has broken on very rare occasions.

Symptoms

No communication between all Arduinos and the Raspberry Pi server

Diagnosis

If only one Arduino is not communicating More likely to be something wrong with:

1. Arduino

2. Motherboard connections between Arduino and RS485 board

If you have tried a new Arduino with new code and verified motherboard connections work, it may be the RS485 board itself. Try a new RS485 board ordered from Fynch.