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March to the Beat of Your Own Piezoelectric DrumDrums!

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  • March to the Beat of Your Own Piezoelectric Drum

    Drums! You hit them, and they vibrate. It’s kind of fun. Piezoelectric elements can create electric current when they vibrate. [Will Dana] put two and two together to try and charge his phone on his YouTube channel WillsBuilds embedded below.

    It worked… about as well as you might expect. Which is to say: not very well. The random piezo elements [Will] glues to his drum almost certainly aren’t optimized for this use case. Adding weight helps, but it doesn’t look like a tuned system. Even if it was, piezoelectric generators aren’t terribly efficient by nature, and the (small) losses from the required bridge rectifiers aren’t helping. An energy-harvesting chip might have worked better, but it probably wouldn’t have worked well.

    Since he cannot produce enough voltage in real time, [Will] opts to charge a capacitor bank that he can dump into the phone once it gets enough charge in it to register with the phone’s circuitry. It takes about 30 minutes drumming to charge the capacitors in parallel, before switching to series to get the voltage up to discharge. The capacitors drain in about a quarter second, probably to no measurable result– but the phone does read as “charging”, which was the goal.

    Did it work? Technically, yes. The phone was “charging”. Is it practical? Certainly not. Is it a hack? Undeniably so.

    youtube.com/embed/c5p8IywkwLQ?…


    hackaday.com/2025/09/20/march-…


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  • 0 Votes
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    Come comico indubbiamente un fuoriclasse. Come persona probabilmente meno, anche se aver creato Telethon è un bonus a suo favore (qui citavo la reunion con #DeanMartin avvenuta in quell'occasione https://mastodon.uno/@fucinafibonacci/115779836904620380). Ma anche come attore aveva il suo perché. #JerryLewis nasceva 100 anni fa. Re per una notte (1983) - TokyVideo https://www.tokyvideo.com/it/video/re-per-una-notte-1983 @spettacoli #cinema
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    Come comico indubbiamente un fuoriclasse. Come persona probabilmente meno, anche se aver creato Telethon è un bonus a suo favore (qui citavo la reunion con #DewnMartin avvenuta in quell'occasione https://mastodon.uno/@fucinafibonacci/115779836904620380). Ma anche come attore aveva il suo perché. #JerryLewis nasceva 100 anni fa. Re per una notte (1983) - TokyVideo https://www.tokyvideo.com/it/video/re-per-una-notte-1983 @spettacoli #cinema
  • Ho una fame nervosa che sto per urlare.

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    @Zambunny lavati i denti, sentirsi la bocca fresca può far passare la voglia di sporcarlaSe non funziona mangia il dentifricio 😅
  • Bene, anche paypal me lo sono tolto dalle ⚽⚽

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    @Alberto @electricsheep @matz @simone @marcoboh @bradipo eh sì infatti l'ho scritto, a questo punto se proprio serve piuttosto Alipay (e non è che sia tanto meglio, ma piuttosto che i tecnonazisti americani)