What is the function of the diode received by the serial port?
Enrico ポストする November 5, 2020
Reverse cut off to prevent backflow.
Fabrizio ポストする November 5, 2020
This feels like a potential conversion effect.
Robinson ポストする November 5, 2020
5V and 3.3V level conversion.
West ポストする November 5, 2020
OPEN DRAIN Potential conversion.