Electromagnetic Field Sensor – vero layout
Build and EMF sensor to listen to electromagnetic fields and the sounds your electronic devices make.
Custom
Custom made or custom bent by POTAR
Piezo Buffer – OPAIC – opamp impedance converter
An OPAMP impedance convertor for use with various types of piezo
New stuff in the shop!
Added a few new items to the shop. Urchinspiel is a one-off, there is also some stuff over in the new scratch and dent section that is like, half-price.
Sound Urchin videos
The Sound Urchin is an electro-acoustic instrument that creates off-kilter sounds, atmospheres, and ambiance based on vibration. The entire instrument acts like a pickup and will amplify just about anything it sits on. It can be plucked, strummed, thumped, and “played” in many ways. You are only limited by your own imagination. What are other … Read more
Stereo phono preamp using JAN 6418 tubes
Here is a nice little stereo phono preamp using a pair of JAN 6418 subminiature tubes. This design uses very few components and adds a nice bit of extra oomph and tube tone sparkle to your input signal. I have tested on turntables and cassette decks with great results. Using an IC7660s as a charge … Read more
Modified DOD FX70 Stereo Flanger
I have had this old DOD Flanger kicking around in my parts box for about 10 years. I finally got around to testing the mods on it, and WOW! It’s a killer. From added LFO tones and noise to delay-like repeats The mods are pretty simple, you replace the 3 internal trim pots with comparable-value … Read more
CV Hex Noiser
Here is a fun little noise project that you can hook up to your Baby 8 Sequencer to get some gnarly sounds. Taking CV (control voltage) from your sequencer or another synth the POTAR CV Hex Noiser creates funky noise beats, bleeps, and squelches in time with your setup. Don’t have a sequencer? No problem, … Read more
Sub Mini Tube Booster with the JAN 6418
Here is a stripboard layout I did for a preamp/boost using the JAN 6418 subminiature tubes I have been experimenting with lately. It is based on the schematic from the previous post, but rather than powering the heater with a 1.25-volt battery, I utilized an LM317 voltage regulator and a 100-ohm resistor. This ultra-simple circuit … Read more