Robot Balances Ball On A PlateImagine trying to balance a heavy metal ball bearing on a cafeteria tray.
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Robot Balances Ball On A Plate
Imagine trying to balance a heavy metal ball bearing on a cafeteria tray. It’s not the easiest thing in the world! In fact, it’s perhaps a task better automated, as [skulkami3000] demonstrates with this robotic build.
The heart of the build is a flat platform fitted with a resistive touchscreen panel on top. The panel is hooked up to a Teensy 4.0 microcontroller. When a heavy ball bearing is placed on the touch panel, the Teensy is thus able to accurately read its position. It then controls a pair of NEMA 17 stepper motors via TCM2208 drivers in order to tilt the panel in two axes in order to keep the ball in the centre of the panel. Thanks to its quick reactions and accurate sensing, it does a fine job of keeping the ball centred, even when the system is perturbed.
Projects like these are a great way to learn the basics of PID control. Understanding these concepts will serve you well in all sorts of engineering contexts, from controlling industrial processes to building capable quadcopter aircraft.
youtube.com/embed/vo-K9wCnmB4?…
Gli ultimi otto messaggi ricevuti dalla Federazione
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Quindi:
Prima, "possiamo distruggere il terminal petrolifero di Kharg quando vogliamo".
Poi, "Lasciamo uscire le petroliere iraniane dallo Stretto di Hormuz, vogliamo che il mondo sia ben rifornito".
Minus habentes ne abbiamo?U.S. is allowing Iranian oil tankers through Strait of Hormuz, says Bessent https://cnb.cx/4dn9XUn
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@quinta Per fortuna in Italia non sta succedendo niente di simil...oh wait
https://www.ilpost.it/charlie/chi-sono-gli-editori-italiani-2/
(Dal Post articolo sugli scenari che si stanno aprendo per le proprietà dei maggiori quotidiani italiani)(Per le TV siamo stati apripista, sui social ci pensa Trump anche per noi)
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@evan thanks so much! I tried to replace the generic document symbol with a better card, but it still needs some tweaks. I also got no notification about your comment. And replies are out of order, which I'm trying to figure out if that's how it needs to work or if it can be improved. There's some work to do, but I appreciate the support!
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We love seeing community members share why FreeBSD matters to them.
Community member Stefano shares his experience and what keeps him choosing FreeBSD, from performance and reliability to the project’s philosophy.
Read his full post here:
https://it-notes.dragas.net/2026/03/16/why-i-love-freebsd/Tell us in the comments: what makes FreeBSD your platform of choice?
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Meloni is trying to use oil price shock to dismantle EU climate policy
https://davekeating.substack.com/p/meloni-is-trying-to-use-oil-price
> EU countries with higher renewables and nuclear have been less impacted by the Iran War. So you might think Europe's right would back off its quest to dismantle EU climate policy. Think again.
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Trump «avvisa» la Nato e va contro la Gran Bretagna: «Ho chiesto aiuto a Starmer, ma si è rifiutato. Stiamo parlando con Teheran ma non c'è accordo»
Corriere della sera
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UE, Kubilius: “Difesa comune è un obbligo scritto nei Trattati. Se non ora, quando?”
@news
https://www.eunews.it/2026/03/16/ue-kubilius-difesa-comune-e-un-obbligo-scritto-nei-trattati-se-non-ora-quando/
Il commissario europeo per la Difesa e lo Spazio, intervenuto ad un evento organizzato da Forum Europa, avverte: "Abbiamo bisogno di una produzione indipendente di missili in Europa"
