Tracking Weather Balloons With SDR

This Found-Sound Organ Was Made With Python And A Laser Cutter

Sure among our readership will no doubt don’t forget attaching a playing card to the front fork of one’s bicycle so that the spokes flapped the card as the wheel rotated. It was intended to seem like a bike, which it did not, but it was great, cleanse exciting with the bonus of producing us even extra annoying to the neighborhood retirees than the regular baseline, which was already fairly higher.

[Garett Morrison]’s “Click Wheel Organ” performs on much the identical theory as a card in the spokes, only with much far more wheels, and with significantly more musicality. The organ is composed of a independent toothed wheel for each and every observe, all turning on a common shaft. Each individual wheel is laser-minimize from thin plywood, with a collection of wonderful tooth on its outer circumference. The number of teeth, as calculated by a Python script, determines the pitch of the seem made when a skinny reed is pressed against the spinning wheel. Due to the fact the ratio of teeth concerning the wheels is fixed, all the notes stay in tune relative to each and every other, as extensive as the pace of the wheels stays continuous.

The proof-of-notion in the video under demonstrates that pace management isn’t quite there nonetheless — enjoying various notes at the same time appears to be to maximize drag sufficient to slow the wheels down and decrease the pitch for all the notes. There seems to be a photointerrupter on the wheel shaft to observe velocity, so we’d picture a PID loop to control motor speed might assist. That and a greater motor that won’t bog down as quickly. As for the seem, we’ll just say that it undoubtedly is unique — and, that it appears to be like something [Nicolas Bras] would seriously dig.

https://www.youtube.com/check out?v=PuulRBH9yVw