To make a simple MIDI controller, you need knowledge of firmware ... circuit board that serves to break out the connections on an Arduino nano to a dozen arcade push buttons, four slide pots ...

[Blue Blade Fish] wanted to build an Arduino-based aquarium controller. He’s detailed the system in (so far) 14 videos and it looks solid. This isn’t just a simple controller, either.

It can function as a remote control, a Bluetooth gamepad, or even a smart automation device—all tailored to individual needs. With open-source firmware and an expanding library of example code, makers ...