Wakeup Service

Wakes up my beefy desktop computer from my Raspberry Pi with a Wake-on-LAN packet.

Why? The desktop computer has an idle load of ~80W. The Raspberry Pi has an idle load of less than 5W. Quick calculation: 80 Watts * 24 hours * 365 days = (80/1000) * 24 * 365 kWh = 700,8 kWh per year. That would be lot of electricity wasted.

Usage

Goto http://10.64.0.4:8000/ to ping or wake up the computer.

Notes

• The Raspberry Pi is connected to the same home network as the desktop computer.
• The Raspberry Pi is also in a wiregurad VPN network (hence the 10.64.0.4 IP address).

Setup

1. Create a new user for the service on the Raspberry Pi

   sudo useradd -r -s /bin/false wakeup_service

2. Create a directory for the service, but make it owned by your user (here: gir)

   sudo mkdir /usr/local/lib/wakeup-service
   sudo chown gir:gir /usr/local/lib/wakeup-service/

3. Create a virtual environment for the service

   python3 -m venv /usr/local/lib/wakeup-service/venv

4. Install the dependencies from requirements.txt

   /usr/local/lib/wakeup-service/venv/bin/pip install -r requirements.txt

5. Install the wakeup service

   sudo cp wakeup.service /etc/systemd/system/
   sudo systemctl enable wakeup.service
   sudo systemctl start wakeup.service