[Jacob Geigle] had a problem. A GPS unit and a Bluetooth-to-serial were tying up all the hardware UARTs on an AVR Arduino project. “Software serial”, I hear you say. But what if I told you [Jacob] ...

Fancy a retro twist to your next Arduino-based project? One Gadget Master has turned an Uno into a punch card-controlled computer, which outputs the results on its serial port. The maker in question - ...