## HomeServerIOExt

When migrating my home control server from a Raspberry Pi to x86 hardware I needed an interface to connect some sensors (door contact, PIR sensors, temperature sensor) 
which were previously connected to the RPi´s GPIOs. 

This simple solution consists of an Arduino Nano which is connected to the host via USB and a daemon written in Python which publishes the states over MQTT. 

- Arduino reads the sensors/IO-Pins and sends values/state changes via Serial
- Python program runs as a daemon, receives the serial data and sends values/states to an MQTT broker

### Installation

- download/copy ioext directory to /home/pi/ioext
- edit ioext.py - change configuration for serial, MQTT etc (serial should be accessed via /dev/serial/by-id/...)
- if python3 and/or pip is not installed - install it as root: apt install python3 python3-pip
- install requirements: pip install -r requirements.txt
- chmod +x /home/pi/ioext/ioext.py
- test it: ./ioext.py

install systemd service (as root):
- cp /home/pi/ioext/ioext.service /usr/lib/systemd/system
- systemctl daemon-reload
- systemctl enable ioext
- systemctl start ioext