There are Arduino shields for just this sort of thing — the Adafruit Wave Shield turns up in many projects ... Here’s a demonstration of the finished mini-synth in action: [youtube=http ...

Calling it the ESPecter, [ACROBOTIC Industries] wanted to make this a simple project for anyone, regardless of skill with a soldering iron or Arduino ... a Wemos Mini D1 with an OLED shield ...

Developed in collaboration with Truesense, the new Portenta UWB Shield and Arduino Stella harness ultra-wideband (UWB) technology for next-level precision tracking, indoor navigation, and ...