Push-button telephone. Analog drum machine. Arduino Nano. DIY amplifier. Shashwath Sundar, aka simple_but_nerdy, makes the telephone-drum machine fusion seem like it was meant to be.

At first glance I expected this would be mainly an enclosure hack, but it’s way more than that. There’s a full-blown analog drum machine design in here, and it’s surprisingly feature-packed. The telephone interface is integral to the design, not just a gimmicky afterthought.