diff --git a/README.md b/README.md index a4e67ec..1d9a618 100644 --- a/README.md +++ b/README.md @@ -99,7 +99,24 @@ WantedBy=default.target - To let user services continue running after logging out: - `sudo loginctl enable-linger $USER` -Readme will be updated in the near future with physical connection instructions. +### Connecting to the Pingvin unit +- Connect an RS-485 adapter to the computer you intend to run the daemon on + - Tested only on a RPi 4B and Zero W 1 with the Zihatec RS-485 HAT + - You may need terminating resistors in your adapter, see documentation +- Ensure the user has read/write privileges to the serial device. + - No need to run the daemon as root, and it is not recommended + +# Disclaimer: +**I am not responsible of possible damage to your device if you choose to follow these instructions** +**The manufacturer may void your warranty if you choose to follow these instructions** +- Shut down the main power of the unit +- Disconnect the device from mains, discharge any static electricity before proceeding + - A new motherboard seems to cost close to 1000€ + labour +- Open the cover in which the power switch is attached to. No need to disconnect the switch, there +should be enough length in the wires to move the lid with the switch connected out of the way +- Locate the green RS-485 connector on the motherboard + - + Work is part of my Bachelor's Thesis at Oulu University of Applied Sciences.