When you think about iconic video game characters, I’m sure a certain yellow circle comes to mind. You know the one; has an insatiable appetite? Constantly pursued by colorful ghosts? I’m sure it will come to you.
As it turns out, the Chomper badge has a striking resemblance. Beyond the sharp pixelated design, the badge also plays music and uses a minimalist LED animation. Most interesting of all its features, is the fact that the entire melody is stored on an attiny13 (with 1k of flash), and when it plays it’s loud enough that there’s no doubt you’ll hear it.
Those who are interested in design notes that discuss how this was done should check out the store page for a detailed recap of the process.