The little cardboard contraption you see here is the BeatSequencer 1.0, a little Arduino-powered contraption that makes blinking and beeping and flashing lights. Blinking and beeping and flashing… they’re flashing and they’re beeping! I can’t stand it any more! I’m all right. I’m all right.
Here’s a little video of this thing in action. Thrilling!
I think these are full build instructions for the BeatSequencer, but I don’t read ze German.