When you get deeper in you will hit the issue that almost every modern part is smd with no through hole equivalent.
I’m not currently planning to get deeper into this, but we’ll see!
Audio science review forums will have domain experts who are much more knowledgeable than I am about this, it’s very hard to make “perfect” analog acoustic circuits where any design compromises are no longer audible. But it can be done.
One nice thing about this project is that I’m not trying to capture high-quality audio: I only need it to be good enough to work as a sensor.
Testing with a breadboard the 3.3v digital seems to be good enough, and the noise I’m getting seems to be RF on the piezo lines which is hard to avoid.
I’m not currently planning to get deeper into this, but we’ll see!
One nice thing about this project is that I’m not trying to capture high-quality audio: I only need it to be good enough to work as a sensor.
Testing with a breadboard the 3.3v digital seems to be good enough, and the noise I’m getting seems to be RF on the piezo lines which is hard to avoid.