Although sometime ago I ordered Jules' OPA Alice PCBs for contact mics I never got around to buy the components.
But I recently I managed not only order @rogs OPIC PCBs but the components too! Yay me!
After the resounding succes of building two electret OPIC mics (the only simpler circuit I can think of is Simple P48, I guess) I was left with boards and components so I thought it may be a good impedance converter for a piezo.
Having no other suitable shielding box on hand I used a BM-800 body (the board is made for it after all).
The piezo is this one:
https://www.aliexpress.com/item/1005002546378216.html
Needs no shielding, is waterproof and easy to handle.
Easier than a most commonly used piezo discs.
Soooo... I mounted the board in the BM-800 body I had laying around (you can screw it together without the head basket, just careful not to overtighten), attatched the said piezo on a ca 70 cm long cable that I had laying around, ready made from previous experiments, et voila!
It works nicely, signal level is high, no noise, no hum.
Might even be too hot for louder sources.
Cannot do simpler or lazier.
I'm already having ideas of 3D printing a holder for the piezo (with magnets) that will be attached in place of the head basket.
But I recently I managed not only order @rogs OPIC PCBs but the components too! Yay me!
After the resounding succes of building two electret OPIC mics (the only simpler circuit I can think of is Simple P48, I guess) I was left with boards and components so I thought it may be a good impedance converter for a piezo.
Having no other suitable shielding box on hand I used a BM-800 body (the board is made for it after all).
The piezo is this one:
https://www.aliexpress.com/item/1005002546378216.html
Needs no shielding, is waterproof and easy to handle.
Easier than a most commonly used piezo discs.
Soooo... I mounted the board in the BM-800 body I had laying around (you can screw it together without the head basket, just careful not to overtighten), attatched the said piezo on a ca 70 cm long cable that I had laying around, ready made from previous experiments, et voila!
It works nicely, signal level is high, no noise, no hum.
Might even be too hot for louder sources.
Cannot do simpler or lazier.
I'm already having ideas of 3D printing a holder for the piezo (with magnets) that will be attached in place of the head basket.
