This is a footswitch for automating some repetitive tasks on your computer. It is wireless and uses bluetooth technology that connects itself to your computer as an ordinary wireless keyboard. You can assign any key for short press and another key for long press.
The modul is based on Esp32 Wroom by the ESPRESSIF Systems. The device works with a 18650 battery and has a charging circuit. You can see the charge level on the connected computer.
The cover is designed to be produced with 3D printing. The spring feature comes from its design.