Comment by theacodes

Thank you! For the board layers I just used macOS's screenshot utility, though I would like to do something fancier in the future. The schematics are rendered using code I wrote specifically for this article, but I am planning to publish it as an open source library so others can use it. It needs a little bit more polishing before it's ready, though! You can follow me on Twitter if you wanna get updates about it.