Thanks, that looks awesome. It's hard to find any good guides online (wikipedia links to one that makes no sense at all) but it seems like an easy project to d

Thanks, that looks awesome. It's hard to find any good guides online (wikipedia links to one that makes no sense at all) but it seems like an easy project to do without instructions, since all it takes is a couple solenoids and a magnet or two. Just experimenting with paper strips, it seems like the frequency depends on the width between the membrane and the base. Does anyone know if/why this is true?