Simple solution to connect some sensors to any linux host via USB as a replacement for previously used Raspberry Pi´s GPIOs.
FloKra
73a405161f
- added config option 'filterUnchanged' so that filtering on state change can be disabled now (pin state is sent by the MCU every minute by default - now this will be published every time on MQTT if filterUnchanged = False)
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1 year ago | |
|---|---|---|
| HomeServerIOExt_Arduino | 1 year ago | |
| ioext | 1 year ago | |
| CHANGELOG.txt | 1 year ago | |
| README.md | 1 year ago |
README.md
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