Story time: I briefly worked in a school that, incredibly, didn't have a working bell system. Since this is obviously idiotic, I decided to hack something toget

Story time: I briefly worked in a school that, incredibly, didn't have a working bell system. Since this is obviously idiotic, I decided to hack something together. I got a vacuum cleaner from the thrift shop, an old keyboard for free from the Geek Squad at Best Buy, and hooked a solid state relay up to one of the LEDs to drive the vacuum cleaner (credit to Cryptonomicon for the idea, just with a louder outcome). Copious duck tape connected the vacuum cleaner hose to the blow side of the vacuum. For the other end of that hose I built a single organ pipe out of 1/4" plywood. It turns out it's pretty straightforward to make a single pipe that isn't tuned to any note, nevermind a whole set. Going down the Internet rabbit hole on organ pipes was a great relief from the general insanity of working in a school. Unfortunately, I left that position before I finished the software. Probably because instead of using a cron job, I started with writing a lexer and parser for a custom config file. TL;DR: if you just want to make some noise, it's not hard. Build one pipe, build a whole rank, and go wild from there! You needn't bother with the software simulation from TFA if you just want to hack and annoy your neighbors.