Worked on this today and got it to the point where I could test it.
Energised it to give it a few short runs. Worked fine, you can see the high frequency vibration in the water.
However, the fuse on the board blew.
I mocked up another fuse, but the board has no output.
So this project is on hold.
[Linked Image]
[Linked Image]
[Linked Image]


Happy is he who penetrates the mystery of things.