zlacker

>>belzeb+(OP)
Interesting, but yeah, he fought way too hard with the analog part driving the transducers

I get it, it's a hobby project, but I feel the knowledge of analog electronics is getting lost in a way (and yes the analog people are the worse at explaining things - I think I saw YT videos more informative than whole university courses)

>>raverb+VP
Author here. It's all digital (square waves!).

There were definitely well-known circuits for driving transducers, but I had to improvise to make a circuit small and simple enough to build 100 of them.

Building new circuits requires tinkering and many tries, regardless of the builder's knowledge.

>>belzeb+WQ
> well-known circuits for driving transducers, but I had to improvise to make a circuit small and simple enough to build 100 of them

Yes, maybe an Opamp that works at 40V could have worked (with an appropriate feedback config), but your end result looks ok. I'm just saying that putting the transducer in the emitter was a non-starter (as you correctly pointed out)

> Building new circuits requires tinkering and many tries, regardless of the builder's knowledge.

Absolutely, I'm not denying it :) It's a great job nonetheless