🚉 Departures

Raspberry Pi train departures board for LED matrix display. Displays the next 4 departures, along with their status.

Only dependency is hzeller/rpi-rgb-led-matrix which is used to control the LED display.

Running on the Pi

Prerequisites

• Node 24 is installed via nvm (nvm is assumed in the pi_start.sh script)
• config.json file exists in the root with the following schema

{
  "tflApiKey": "string",
  "lineId": "string",
  "stopPointId": "string",
  // Optional values below
  "dataFetchIntervalSeconds": "number", // default 15
  "activeHoursFrom": "number", // default 1
  "activeHoursTo": "number", // default 8
}

Build and run manually

npm run build
sudo $(which node) ./dist/index.js

Running on startup

# Important to use the sudo crontab. Using the non-sudo crontab and pointing it to a script
# that launches the program using sudo results in 2 instances being launched ¯\_(ツ)_/¯
sudo crontab -e
# Add this line to the crontab
@reboot /path/to/repo/pi_start.sh

To check and kill processes started by the cron

# See running processes
ps aux | grep node
# Kill it
sudo pkill -f "/path/to/repo/dist/index.js"