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Best pins for sensors and relays

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Leo05
last edited by
Hi,

I have a project with:
- 1 DS18B20 sensor (3 wires)
- 2 water flow meters (3 wires)
- 2 relays
I will probably use the M5 PLC module to prototype the circuit.

What is for you the best pins to use for sensors and relays?

Thanks
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