My old Rs-485 hub was getting to small to connect all the device from my Joshua domotica.
Designed a new one with smd components to reduce the size.
The line drivers SN75176 are still dip-8 to change them easy when there’s one broken, not that they ever breakdown (last 10 years zero) but you never know.
It’s stack able for extending the ports.
Design
Schematic
Result 1
Result 2
Download schematic and Eagle pcb files:
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