Turns out I forgot to solder the ground and power pins! So they worked, but very poorly.
Combined with switching to shielded cable and swapping the piezo input from +1.65v to ground, it’s working well now!
Turns out I forgot to solder the ground and power pins! So they worked, but very poorly.
Combined with switching to shielded cable and swapping the piezo input from +1.65v to ground, it’s working well now!