A new instructable how to add up to 3 RS485 busses on one Arduino is online:
https://www.instructables.com/id/Up-to-3-RS485-Busses-on-One-Arduino/
A project log for RS422 / RS485 Arduino Shield
isolated RS422/RS485 shield for professional use
A new instructable how to add up to 3 RS485 busses on one Arduino is online:
https://www.instructables.com/id/Up-to-3-RS485-Busses-on-One-Arduino/
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