Speak and Math MidiSpeak

When I saw the midi speak kit online I knew I had to have one for my Speak and Math. The circuit-bent Speak and Math is already a ton of fun to play with. Sick, sputtering, looping glitches, word fragments, and random number strings are common, so getting it to trigger along with your drum … Read more

PT2399 Noise Ensemble delay

The Noise Ensemble is an extremely noisy delay that can easily be pushed over the edge into self-oscillation. Based around the PT2399 IC; it has a built-in VCO, 2 op-amps, and 2 low pass filters crammed into a 16-pin dip case! It can get very loud! Check out the datasheet. I have built more than … Read more

Circuit Bend a Toysmith Megaphone Voice Changer

Here is a handy diagram for circuit bending a Toysmith Megaphone Voice Changer. There are a couple more mods you can do to this bad boy but the ones pictured are the key to getting sound in and out via jacks, as well as pitch and feedback loop. These are really versatile in the studio … Read more

8 Monotron Delays and 8 Sequencers in one box

FROM 2012 : This is a project I started a few months back for a friend who is looking to sequence 8 Korg Monotrons for live performance… once the Monotron Delays get delivered I will most likely follow the great advice, directions, and tips at Steve Woodward’s site, he has compiled most of what is … Read more

Yamaha Mu-5 Build Pics

I bent this Yamaha MU-5 a few months back and never posted the pics here. The ic is surface mount and has tiny legs that make it a chore to solder to, but the results are worth all the solder stress. I love to chain this thing to my Roland Tr-505 or Alesis HR-16 and … Read more

POTAR Design Devices