🚍 MuniPi
MuniPi is a small software/hardware assembly of a Ruby socket server and Python client daemon that displays the NextMUNI predictions for a predefined set of Muni routes on a RaspberryPi using a 16x2 LCD character display.
Software
MuniPi requires a few software libraries to get running. You can install the
Ruby dependencies from the Gemfile by running bundle install, of course that
means you need bundler and a version of Ruby.
The Python dependencies are installable as a submodule, just run git submodule update --init.
Hardware
MuniPi was designed to run on a Raspberry Pi, however the software will run anywhere you have Ruby and Python, and the hardware part of things will run basically anywhere you have i2c GPIO.
BOM
Assembly Instructions
Please see the instructions for your Raspberry Pi and the character display. An instructable is forthcoming, but I wouldn't hold your breath.
Usage
Both the Ruby server and the Python client must be running simultaneously. The Python client requires sudo privelages to access the i2c devices required to display the countdown on the LCD character display.
I recommend running the server and the client at boot, and if you put the calls
to the scripts in /etc/rc.local they will be run as root.
$ su root
$ echo "(sleep 2; ruby ~/MuniPi/Server.rb)&" >> /etc/rc/local
$ echo "(sleep 2; python ~/MuniPi/Client.py)&" >> /etc/rc/local
I recognize that there are probably a million other ways to do this, if you have a better suggestion submit a pull request.