Relay script to turn on the amplifier

Scaevola · July 16, 2019 at 8:39 AM

Hello,

I am looking for the script to turn on and off the amplifier.

The amplifier is an old logitech PC 5.1 system, which is connected to RPi3 through external usb 5.1 soundcard. But this sound system has only analog inputs and thus it cannot be driven through hdmi. The RPi works 24/7.

I want to connect a relay through RPi GPIO, that would turn the logitech on when the hdmi output is active (tv shows kodi screens) and turn it off when the hdmi output is off (tv works with other inputs).

Is there such possibility?

**Da Flex** · July 16, 2019 at 12:42 PM Official Post

I think so. Write a Python script to check whether the screensaver is active. If yes, trigger the relay. Start the script from autostart.sh.

Scaevola · July 22, 2019 at 7:10 AM

Ok, thanks, I didn't figure it, that this can depend on the screensaver. I'll try to do it.