Hi all,
I have installed current volumio on Rapi 4 B. I want to use GPIO4 (Pin 7) as output pin to realize an on/off switch. I connected to Pin 7 a resistor 270 Ohms and a LED to ground. Pin 7 is set up as output.
When the Raspi starts up, after a couple of seconds the LED is lit as wanted. When the Raspi shuts down, the LED goes out, but the voltage on Pin 7 is still 1,7 V. I expect it to be much lower. I would like to use it to switch off the voltage via a transistor and a relay.
What am I doing wrong?
Thanks, Rainer