Platform3

A NYC subway countdown clock within the comforts of your own home.

Parts

Part	My cost	Link (and your cost)
32x64 LED matrix + cables	$20 (matrix from Taobao, cables from Tinkersphere)	Adafruit (includes cables), 16 pin cable only, 4 pin power only
Raspberry Pi	$50 (3B+)	Any good Pi, Zero 2 W is good but sold out
Adafruit RGB matrix bonnet	$15	Adafruit or on Digikey
Power supply and wall plug	$25 5V 10A	Tinkersphere (doesn't include wall plug)
Shipping	~$15 for local parts	-

Tools: Keyboard, Mouse, and Monitor Setup raspberry pi with latest OS and python 3.7+ (already pre-installed)
Tools: Soldering Iron (optional) Assemble the components according to the Adafruit guide. Soldering optional under step 6.
Continue following the Adafruit software setup until complete.

Clone/download repository. Enter that directory using cd <the path of the repository you just cloned>.
Obtain API token by signing up on MTA and generating a token for GTFS-rt
Run make to install dependencies and generate config.py
Edit config.py to paste in the API token, and set up the stops array as follows: Stop("<train>", "<stop>", <distance in minutes from station>). <train> is A, L, 7X, FS, etc. as listed in VALID_LINE_IDS, <stop> is the stop ID with direction obtained from this list, and <distance in minutes from station> is used to filter out trains that arrive too soon for you to be concerned.
Run with the following commands: chmod +x platform3/platform3.py (enables execution), sudo su (elevates privilege to run low level hardware stuff), platform3/platform3.py (runs the program).

This is a work in progress. Make an issue or a pull request and we'll address it when we can!