Hi;
I just reversed engineered a circuit ( attached ), but i don't understand why are the 2 diodes that way.
I mean, if D1 was connected to ground, that's ok. If D2 was connected between the Cathode of D1 and VCC, that's also ok, but the two anodes are connected, and one cathode goes to the micro line, and the other to Vcc.
Can somebody explain to me?
Thanks