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Chicken Coop

Chicken Coop python app running on Raspberry PI.

Supports:

  • capturing temperature using DHT22
  • controlling actuator relay for opening/closing door
  • streaming mjpg video using official camera module
  • streaming audio using USB sound card using external icecast+darkice services
  • controlling IR illuminator relay for night vision
  • reading input button, if you want to open/close door manually on-site without a smart phone
  • support for scheduled door opening and closing on sunrise and sunset
  • stores the current state into config file so the door remain in position in case of power shortage

The app is split in two parts:

  • the backend controls the GPIOs (relays, temperature readings, button)
  • the frontend serves a website and captures video from the camera

Scheme

Breadboard scheme

Installation

Backend

Install dependencies:

sudo apt install python3-libgpiod # also installs libgpiod2
pip install adafruit-circuitpython-dht astral

Run backend with

cd backend
python chickencoop_backend.py

Frontend

Run frontend with

cd backend
python chickencoop_frontend.py

Visit http://your-raspberry-address:8080.

Systemd services

You can register chickencoop to start when raspberry turns on. Put those in /etc/systemd/system/chickencoop_{frontend,backend} respectively.

[Unit]
Description=Chicken Coop Frontend
After=network.target

[Service]
ExecStart=/home/pi/chickencoop/frontend/chickencoop_frontend.py
WorkingDirectory=/home/pi/chickencoop/frontend
User=pi
Restart=always
Type=exec

[Install]
WantedBy=default.target
RequiredBy=network.target

[Unit]
Description=Chicken Coop Backend
After=network.target

[Service]
ExecStart=/home/pi/chickencoop/backend/chickencoop_backend.py
WorkingDirectory=/home/pi/chickencoop/backend
User=pi
Restart=always
Type=exec

[Install]
WantedBy=default.target
RequiredBy=network.target

Don't forget to enable them so that they are executed on startup:

sudo systemctl enable chickencoop_frontend
sudo systemctl enable chickencoop_backend

Check logs by:

sudo journalctl -u chickencoop_frontend
sudo journalctl -u chickencoop_backend