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