If you want to make an electronic lock, using a [[KeyPad]] is the obvious way. There's one of these in the Espruino Ultimate kit, but see the [[KeyPad]] page to see where you can buy them. Just plug ...

If you ever forget the combination to your bike lock, here's how to open the lock—without any tools required. A word to the wise: You might also consider getting a more secure kind of lock for your ...