The Hey Jude Sound Urchin

Hey Jude Sound Urchin

Get weird with it! Not your usual Sound Urchin, I took this little Hey Jude music box and mounted it right above the 35mm piezo disc for ultimate impact. The music wire was chosen for its bell-like tone, and you just gotta have a spring these days. Crank the wheel, slow or fast to achieve … Read more

Sound Urchin Composer #005

Sound Urchin Composer #005

Sound Urchin Composer series instruments are always a little different They all feature resonant bowls, tiered threaded rods, and the Sound Urchin pre-amplifier circuit but vary based on what is available. #005 features a 5″ Urchin giving ample access to a resonant bowl that was harvested from an industrial fire alarm, it also features our … Read more

Sound Urchin COLONY – now available

Sound Urchin COLONY 2025

NEW from POTAR Design! The latest in Sound Urchin technology, the COLONY. Three urchins perched at different heights, affecting both pitch and tone. More Details The Sound Urchin is a vibratory sound generator, kinda like a kalimba but weirder. The COLONY has 3 urchins at different heights, varying the sound they produce when plucked. 1/4″ … Read more

Circuit Bent a PLAYSKOOL Kid Keys

Circuit Bent PLAYSKOOL Kid Keys

It has been at least 10 years since I had one of these PLAYSKOOL Kid Keys to open up and play with. The first one that I circuit bent went over pretty well, so I have been looking for another affordable one to bend ever since. SOLD From the video description: The Playskool Kid Keys … Read more

Had some server issue but I am back!

POTAR's Golden Urchin Bells

I had some serious server issues last month but POTAR Design Devices is back! Everything is running smooth, transactions are secure, and I have something new to offer. The newest POTAR one-off, Golden Urchin Bells. Limited Edition : 1 of 1 in this format How do you play it? You can strum or pick the … Read more

Building OPA Impedance Buffers

completed Alice Mini board

Hot air reflow is so much easier than I thought it would be. The trick to getting everything placed correctly is to eat a good breakfast and not drink too much coffee. I am using these OPA “Alice” circuits in the hydrophones, dual impedance buffers, and Sound Urchin XLR products. They use a high definition, … Read more

Meal Worm Action: Using the Dual OPA Buffer

meal worm sounds

Headphones Recommended – Just a fun little sound experiment with our lizards food. I attached 2 – 35mm piezos to a small tub of meal worms via my Dual OPA field buffer and then into the trusty Mix Pre 6 II – kind of what you would expect, lotsa scratchy little legs in the saw … Read more

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