ECM Giotto PP coffee machine controller has “died”. The heating element relay has stopped working. Electrocution with 240V wiring a) Disconnect all 240V sources before working on the inside of the ...
Additional circuitry required. One Diode (I use 1n4004) - pole/cathode at tx pin other at rx pin. 4k7 Ohm resistor between rx and 5V (3.3V also works). Same at the other microcontroller but you don't ...
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