Set up a Pi and host PC for remote GPIO access using gpiozero

remotegpio.md

Remote GPIO

GPIO Zero allows you to create objects representing GPIO devices. As well as running it on a Raspberry Pi, you can also install GPIO Zero on a PC and create objects referencing GPIO pins on a Pi over the network.

To do this, you'll need to do a few things to get set up:

1. Enable Remote GPIO on the Pi in the Raspberry Pi Configuration Tool.

2. Run the pigpio daemon on the Pi:

   • sudo pigpiod

3. Get the Pi's IP address:

   • hostname -I

4. Install gpiozero and pigpio on your host machine (not necessary on Raspbian or x86 PIXEL):

   • Install pip: sudo apt install python3-pip
   • Install gpiozero and pigpio: sudo pip3 install gpiozero pigpio

5. Run your Python environment with the PIGPIO_ADDR environment variable set, e.g one of the following:

   • PIGPIO_ADDR=192.168.1.4 ipython3
   • PIGPIO_ADDR=192.168.1.4 python3
   • PIGPIO_ADDR=192.168.1.4 idle3 &

   If running on a Raspberry Pi, you also need to set the pin factory to PiGPIOPin:

   • GPIOZERO_PIN_FACTORY=PiGPIOPin PIGPIO_ADDR=192.168.1.4 ipython3
   • GPIOZERO_PIN_FACTORY=PiGPIOPin PIGPIO_ADDR=192.168.1.4 python3
   • GPIOZERO_PIN_FACTORY=PiGPIOPin PIGPIO_ADDR=192.168.1.4 idle3 &

6. Now use GPIO Zero like normal, and the devices will be controlled by GPIO pins on the remote Pi:

   >>> from gpiozero import LED
   >>> led = LED(2)
   >>> led.blink()  # LED on remote Pi's pin 2 now blinking

   Alternatively, use pin objects as described in the pins documentation.

Could I maybe find a workaround via ssh? I can ssh my university-account.

Yes you could SSH in and control it with python directly - that would be a better approach.