In this guide, we’ll show you simple steps to tune your guitar the right way. If any of these strings are off, your guitar will sound strange. That’s why tuning is important before playing.

All the details are available on a GitHub page, and it’s a modified version of an Arduino guitar tuner he found on Instructables ... The result is a simple-to-use device with an LED for each ...

We’re obligated to bestow that title on [Don Gilmore] for his amazingly simple self-tuning piano ... This tech reminds us of the Gibson Robot Guitar, a self-tuning guitar that does it ...