Tee Eff Elle

A small robot that tells you when the bus is coming. It runs on a Raspberry Pi Zero and a Scroll pHat HD

Demo

Getting Started

You will need to export these env variables:

export TFL_APP_ID="secret"
export TFL_APP_KEY="secret"
export NERVES_NETWORK_SSID="secret"
export NERVES_NETWORK_PSK="secret"

You can register for an API account at https://api.tfl.gov.uk

Then you can tell the Robot which bus stop you care about and how long does it take you to get there. Open config/config.exs and set bus_line, bus_stop and walking_time_in_minutes in this section:

config :tee_eff_elle,
  target: Mix.target(),
  config: %{
    bus_line: "390",
    bus_stop: "490000008W",
    walking_time_in_minutes: 10,
    tfl_app_id: System.get_env("TFL_APP_ID"),
    tfl_app_key: System.get_env("TFL_APP_KEY")
  }

It's time to build your Nerves app:

• export MIX_TARGET=rpi0
• Install dependencies with mix deps.get
• Create firmware with mix firmware
• Burn to an SD card with mix firmware.burn

Then you can connect a USB cable to the port marked as "USB" and run:

ping nerves.local

Until your Pi starts responding. Then you can connect to it with:

ssh nerves.local