A Pi can monitor the 0V/GND plus 5V pins of the GPIO header on another Pi to determine if it is receiving power or not. You would need to use a resistor divider or other means to convert the 5V signal to 3V3 the monitoring Pi can safely use.
I think that's the question you are asking.
Or are you asking if a Pi can itself determine if it has power ? It won't be running or doing anything if it hasn't.
I think that's the question you are asking.
Or are you asking if a Pi can itself determine if it has power ? It won't be running or doing anything if it hasn't.
Statistics: Posted by hippy — Mon Jul 29, 2024 4:32 pm