The people over at Toymaker Television always like to start their projects by ‘building a time machine’. It’s kind of a broad statement, so we’ll ignore it for now. What they’ve done is to re-create an old retro computer with a Raspberry Pi and then hook that up to a modem by way of something called an Acoustic Coupler. That’s what people used to use to talk to modems over a serial line from their old green-screen ‘dumb terminals’ and get on the internet. The ridiculously complex Instructable is available here. I sound like I’m taking the proverbial, but actually it’s a beautiful project. Their video can be seen below: