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custom sonoff dual board

How would I go about quoting a custom sonoff dual board? 


10 pieces, maybe 20


change esp8285 to ESP32

add pin headers for all pins

 4 MAX31865 chips on main board or riser board via VLK(18), MISO(19), MOSI(23)

move high voltage terminals inward to work better in SonOff IP66 waterproof case.



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