Disabled gamer prototypes true one-handed keyboard-and-mouse controller, device nominated for award — maker inspired to build device after losing right arm in an accident

A Reddit creator who lost his right arm built ERCHAM MK1, a one-handed controller that combines mouse and keyboard functions.

The programmable prototype is designed to make gaming and computer use easier for amputees and others who cannot use two hands.

ERCHAM MK1 was nominated in the Entrepreneur of Impact competition and climbed to fourth place, showing strong interest in the idea.

The project suggests real demand for more accessible, specialized gaming peripherals and may move toward production.