The Roadie 2 can tune your guitar automatically

The Roadie Tuner is one of those feel-good Kickstarter success stories that makes the whole experiment worth it. It's a quirky solution to a common problem, and it actually shipped to its backers! The tuner works by pairing with a smartphone to listen to the string you're plucking, and then robotically rotating your instrument's tuning peg until the string is in tune. It didn't change the world, but it worked well and removed some of the stress of the tuning process.
Now Roadie is back for round