The cassette tape interface was a one ... between that matrix and a PS/2 keyboard. As you might expect it uses a modern microcontroller board, in this case an Arduino Nano but it doesn’t stretch ...

At the heart of the project is MicroAPRS, an Arduino firmware for packet ... and a few user interface parts like an OLED screen and a keyboard. In addition, there’s an SD card to store messages.

To make that actually work, Robofun paired an Arduino board with some capacitive controllers for the base, and connected that to a Raspberry Pi that linked the keyboard to the TV. Unconfirmed ...

Developer Vikas Shukla has launched a new Kickstarter campaign this week to raise the required funds he needs to take his new ArduinoPixed USB hub and Arduino interface into production.