MIDI Monster Attack!
The new issue of Make magazine features a tutorial I wrote on embedding a MIDI data detector in a tiny Japanese monster toy. I took a bunch of photos for the article, along with two videos. You can see one video on the Make site, so I thought I'd share the other here.
The video shows a Monster MIDI Detector in action. The LED flashes twice for every note played, indicating the MIDI Note On and Note Off events. (The frame rate on my digicam was too low to capture the flash from the first note.) When I move the mod wheel, the detector lights continuously to show the stream of Control Change 1 events.
For fun, I also tried looping the video on the downbeat and embedding it with Apple's ActiveX Activation workaround.

Wiring detail. I filed down the lugs on the MIDI jack so I could make the hookup with wirewrap instead of soldering.
The MIDI monster chorus line. I wired the LEDs in Namegon's eyestalks in parallel. My goal is to connect them to a flip flop or timer so they flash alternately.
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@Anonymous: Thats Birdland...
Yep! It seemed like an appropriate riff for the analog mono bass synth.