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New motherboard with the ability to install 7 modules

Compatible with D1 (Linux) and E1 (ESP32) processor modules

Planned modules:

✅ Relay 2A
✅ Digital in
✅ 0-10v in
✅ 0-10v out
✅ 4-20mA in
✅AC voltmeter
✅DC voltmeter
✅ Opentherm
… and many others.