Hello, I am looking to use a Pi Zero W as a sense device to see if my computer is on.
I found a couple of mentions and projects but I wanted to clarify something about the wiring.
Based off on these:
viewtopic.php?p=1305824#p1305824
https://github.com/thagrol/fakewake
I am going to power the Pi through its USB port by utilizing the USB-power-always-on function that my motherboard supports.
What I understand is that I only need to connect a 3.3v line from the ATX PSU to a GPIO pin on the PI in order to sense if there is power supplied.
I don't know how to read schematics properly. What I don't understand on the schematic of the fakewake project is why are there two connections from the 3.3v PSU source to the Pi, one directly to GPIO and one going through a 10K Ohm resistor to GND. Or am I reading that wrong?
Basically, I need to know if just connecting the 3.3v PSU line to a GPIO pin through a 10K Ohm resistor will do the job or if I need to do anything else or differently.
My ultimate goal is for the Pi to signal to Home Assistant if the PC is on in order to toggle my TV and speakers, something faster and more reliable than the network ping I am using now.
I found a couple of mentions and projects but I wanted to clarify something about the wiring.
Based off on these:
viewtopic.php?p=1305824#p1305824
https://github.com/thagrol/fakewake
I am going to power the Pi through its USB port by utilizing the USB-power-always-on function that my motherboard supports.
What I understand is that I only need to connect a 3.3v line from the ATX PSU to a GPIO pin on the PI in order to sense if there is power supplied.
I don't know how to read schematics properly. What I don't understand on the schematic of the fakewake project is why are there two connections from the 3.3v PSU source to the Pi, one directly to GPIO and one going through a 10K Ohm resistor to GND. Or am I reading that wrong?
Basically, I need to know if just connecting the 3.3v PSU line to a GPIO pin through a 10K Ohm resistor will do the job or if I need to do anything else or differently.
My ultimate goal is for the Pi to signal to Home Assistant if the PC is on in order to toggle my TV and speakers, something faster and more reliable than the network ping I am using now.
Statistics: Posted by sotirone — Sat May 11, 2024 9:19 am
