What could be more satisfying than building a whole computer, from scratch? You might think it’s impossible these days, but we’ve found a band of makers who are re-creating the clicky switches and flashing LEDs of a bygone age. Have a go yourself!

– Design, sustainability and ethics with Jude Pullen;
– Add much-needed safety features to a cheap off-the-internet laser cutter;
– Send communication signals through the ground;
– Get going with gears. …