Ululatron

dylar · Joined: Apr 25, 2011 Posts: 51 Location: iowa

http://www.youtube.com/watch?v=WsUeIkmQs6A
This is the first design I made from scratch on my own. It is a simple idea, but I think the result is awesome. Six 555 timer circuits that flash variable rate LEDs and DIY vactrols trigger the keys on the keyboard. You can get a lot of weird patterns and play the keyboard faster than any person's hands could. I have yet to box it and put on the knobs, label the notes, etc. But functionality is fully there. Let me know what you think!

tbone · Joined: Jul 02, 2011 Posts: 6 Location: London

This is awesome!
Its like a kind of circuit bent player piano.

Lorenzo · Posted: Wed Jul 06, 2011 3:37 pm Post subject:

JingleJoe · Posted: Mon Nov 14, 2011 11:14 am Post subject:

I had that keyboard as a child, it was my first one!
It's nice to see you butchered it into a musical doohickey and not a noisey ear-destroyer Smile

v-un-v · Posted: Mon Nov 14, 2011 3:55 pm Post subject:

Nice! I was expecting something unlistenable- but instead got nice Krautrock overtones! Cool

Bogus Noise · Joined: Jun 03, 2009 Posts: 42 Location: Sheffield

Nice triggering concept on this! To reduce the chip count, you should be able to get one 40106 to do the same job as the 6 555s - it has 6 oscs so would be ideal. You can also feed the input from an osc into a 4016 to trigger keys and buttons, the DIY vactrols can be saved for controlling pots Smile

You would need two 4016 chips as each has 4 gates.