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Raspberry Pi EVSE hat

This isn't really OpenEVSE, but I wonder if there's any call for a Raspberry Pi EVSE hat. It would have the following functions:

1. A PWM generator for the pilot.

2. An ADC to sense pilot feedback.

3. A relay output tied to an on-board GFI circuit. A ground fault would cut the relay without any software intervention. The software would be able to sense that a GFI happened and reset the GFI detector.

This would potentially interface with my OpenEVSE II HV boards. Those boards would be able to provide GCM and 5V power for the Pi.

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