chrishutchinson/train-departure-screen

Python script to display replica real-time UK railway station departure screens for SSD13xx devices

UK train departure screen

Python script to display replica real-time UK railway station departure screens for SSD13xx devices

Sample output

Requirements

To run this code, you will need Python 3.6+.

Raspbian

If you're using Raspbian Lite, you'll also need to install:

• libopenjp2-7

with:

$ sudo apt-get install libopenjp2-7

Usage

1. Clone this repo

2. Install dependencies

$ pip install -r requirements.txt

3. Sign up for the Transport API, and generate an app ID and API key

4. Copy config.sample.json to config.json and complete the values, including your Transport API keys from step 3. Note: station names should be provided as their three-letter station code, all available here.

5. Start the app with:

$ python ./src/main.py --display pygame --width 256 --height 64

Change the --display flag to alter the output mechanism (a list of options can be found in this README: https://github.com/rm-hull/luma.examples). Use capture to save to images, and pygame to run a visual emulator.

Remember to pass --interface spi if you are using SPI to communicate with your screen. Otherwise, the default of i2c should suffice.

$ python ./src/main.py --display ssd1322 --width 256 --height 64 --interface spi

Video demo

I've tweeted a video demo of the software running on a real device: https://twitter.com/chrishutchinson/status/1136743837244768257

Thanks

The fonts used were painstakingly put together by DanielHartUK and can be found on GitHub at https://github.com/DanielHartUK/Dot-Matrix-Typeface - A huge thanks for making that resource available!

train-departure-screen's Issues

Verify it works with a real SSD13xx device

I've only been testing with simulated devices, as I wait for my real SSD1322 screen to arrive in the post

Doesn't actually load real data yet

Need to query real time station data

Add some tests

Install dependencies process fails

Using latest version of Raspbian Buster (2019-09-26-raspbian-buster-lite), the documented process for installing the dependencies fails with -

Could not find a version that satisfies the requirement astroid==2.2.5 (from -r requirements.txt (line 2)) (from versions: 1.0.0, 1.0.1, 1.1.0, 1.1.1, 1.2.0, 1.2.1, 1.3.0, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.3.7, 1.3.8, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.4.8, 1.4.9, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.6.0, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.6.5, 1.6.6, 2.0.0.dev0, 2.0.0.dev1, 2.0.0.dev2, 2.0.0.dev3, 2.0.0.dev4)
No matching distribution found for astroid==2.2.5 (from -r requirements.txt (line 2))

Odd font rendering at small display sizes

TransportAPI free tier now extremely limited

The TransportAPI free tier no longer allows 1000 requests per day and severely limits data requests.
Could another data source be used e.g. https://realtime.nationalrail.co.uk/OpenLDBWSRegistration ?
Thanks

Running with framebuffer-device

Hi there,

Took me a while to get my Spotpear LCD working (see rm-hull/luma.lcd#139) but I got there in the end.
I am trying to run with the following parameters

python3 src/main.py --interface spi --gpio-reset 25 --gpio-data-command 24 --display linux_framebuffer --width 320 --height 240 --framebuffer-device /dev/fb1

And the script is falling over here

Traceback (most recent call last):
  File "src/main.py", line 263, in <module>
    virtual.refresh()
  File "/home/pi/.local/lib/python3.7/site-packages/luma/core/virtual.py", line 123, in refresh
    im = self._backing_image.crop(box=self._crop_box())
  File "/home/pi/.local/lib/python3.7/site-packages/luma/core/virtual.py", line 135, in _crop_box
    assert(0 <= left <= right <= self.width)
AssertionError

Any clues please? I have just done a fresh install of Raspian and updated all the luma packages to their latest versions.

Many thanks

Jason

Cannot pass custom height / width when running

The script should scale up / down the font sizes etc. as per the size of the display device

Parts list?

The train departure board looks like a great project for a beginner to Python and I wonder if there is a parts list anywhere for the build that Chris used to create his Twitter video? TIA

Readme updates

To help others get this working...

• I suggest adding that the minimum python version is 3.6 due to f"{} {}" notation
• libopenjp2-7 is a requirement and is not included in raspbian stretch lite
  • sudo apt-get install libopenjp2-7

OLED Display Pin Out Diagram

Chris - one of the OLED pin out diagrams you have in the assets folder must be wrong as one has pin 1 as +v and 2 as ground and the other has pin 2 as +v and pin 1 as ground. Which one is correct for the SSD 1332 purchased from AliExpress as you recommend ?

Everything is on time

Running great but every train shows 'On time' despite trains being delayed on the likes of national rail inquiries, other apps etc.

Script crashes when only one train is scheduled

If only a single train is scheduled for a given journey configuration (departure + optional destination), then the script will crash. This is because the script attempts to render a second service, but doesn't have the required data.

Output error, for reference:

Traceback (most recent call last):
  File "./src/main.py", line 254, in <module>
    height=widgetHeight, data=data)
  File "./src/main.py", line 197, in drawSignage
    departures[1]), interval=10)
IndexError: list index out of range

SyntaxError: invalid syntax

Hi,

I have the following error when I try to run the run.sh file

pi@raspberrypi:~/UK-Train-Departure-Display $ ./run.sh
File "./src/main.py", line 38
train = f"{departureTime} {destinationName}"
^
SyntaxError: invalid syntax

I have checked and rechecked my config file and I have re-cloned the GitHub files and I have checked all the requirements have been installed but I still have the problem.

Can anyone help?

Regards
James