These loo rolls formed a choir

Unforeseen circumstances have led to all four of the people who tend and feed this news stream being unavailable for a couple of weeks. To satisfy your lust for projects, we’re wheeling out some of our favourites from the archive. Here’s one from last year.

Have all of y’all been hoarding toilet roll over recent weeks in an inexplicable response to the global pandemic, or is that just a quirk here in the UK? Well, the most inventive use of the essential household item we’ve ever seen is this musical project by Max Bj√∂rverud.

Sheet music

Ahh, the dulcet tones of wall-mounted toilet roll holders, hey? This looks like one of those magical ‘how do they do that?’ projects but, rest assured, it’s all explicable.

Max explains that Singing Toilet is made possible with a Raspberry Pi running Pure Data. The invention also comprises a HiFiBerry Amp, an Arduino Mega, eight hall effect sensors, and eight magnets. The toilet roll holders are controlled with the hall effect sensors, and the magnets connect to the Arduino Mega.

In this video, you can see the hall effect sensor and the 3D-printed attachment that holds the magnet:

Max measures the speed of each toilet roll with a hall effect sensor and magnet. The audio is played and sampled with a Pure Data patch. In the comments on his original Reddit post, he says this was all pretty straight-forward but that it took a while to print a holder for the magnets, because you need to be able to change the toilet rolls when the precious bathroom tissue runs out!

Max began prototyping his invention last summer and installed it at creative agency Snask in his hometown of Stockholm in December.

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