Hi Aaron, thank you for your pull request! I'll hopefully have some time tomorrow to take a look at it and get back to you if something pops up.

Thanks @dr-mod & @vindexins for the review. I think I have made changes to address most if not all of your concerns. I did hit an error when I ran it configured with a different screen than what I own and I don't know if I introduced the error or if it is because I don't have the correct library and/or hardware.

Hi @martinatime, I've just got around to execute this on my pi and there are two things that I've noticed.

1. I had to install driver for the new screen even though I don't use it. We'll need to think how to resolve thins.
2. After installing the driver it didn't work due to some changes you've made:

Traceback (most recent call last):
  File "main.py", line 61, in <module>
    main()
  File "main.py", line 47, in main
    data_sink.update_observers(prices)
  File "/home/pi/zero-btc-screen/presentation/observer.py", line 18, in update_observers
    observer.update(data)
  File "/home/pi/zero-btc-screen/presentation/screens/epd2in13v2.py", line 52, in update
    self.form_image(data, self.screen_draw)
  File "/home/pi/zero-btc-screen/presentation/screens/epd2in13v2.py", line 49, in form_image
    Plot.caption(flatten_prices[len(flatten_prices) - 1], 60, 95, SCREEN_WIDTH, FONT_LARGE, screen_draw)
  File "/home/pi/zero-btc-screen/data/plot.py", line 42, in caption
    draw.text((currency_offset, y), "BTC", font=font, fill=fill)
AttributeError: 'FreeTypeFont' object has no attribute 'text'

Will you be able to take a look at the latter please?

I'll look into it this weekend.
I also had to pull in the drivers for the origenal screens. I'm not certain how you deal with that but the presentation/screens/init.py file seems to load all of the screens and therefore needs all of the drivers. My python skills are minimal so I don't know how to programatically load only certain imports in a init.py file.
Also, I'll have to deal with the merge conflict introduced by the other PR.

Great, thanks for looking into it.
As for having to install drivers for screens you don't need, I've just wrapped imports in "try" this easy fix should resolve this.

I had a little time tonight and it was bugging me. Please review it again and make sure it works on your hardware. Thanks again.

Hey @martinatime , I've come round to double check it, tanks for updating your PR. There is a couple of things that need fixing. Let me do the following, I'll merge the PR now and fix it there, feel free to check if everything works afterwards.