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Forum Index : Microcontroller and PC projects : How cool is this ....
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| Volhout Guru  Joined: 05/03/2018 Location: NetherlandsPosts: 4715 |
Magnetic ball clock.... clock Volhout PicomiteVGA PETSCII ROBOTS |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7339 |
How dare you... I ended up watching Ripping Yarns too! The Testing of Eric Olthwaite ;) (Brilliant clock!) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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PeteCotton Guru Joined: 13/08/2020 Location: CanadaPosts: 490 |
Fantastic! |
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bigmik Guru Joined: 20/06/2011 Location: AustraliaPosts: 2936 |
Nice one Volhout, I am struggling to figure out how they did it. The bottom section appears to have indents over the 7 segment area but no balls in them but a row of spare balls can be seen along the bottom in front of these indents. I guess they have a small but powerful electro magnet on the top section for each pixel. Hmm I need to ponder this whilst I am curing the world of all diseases and wars, Regards, Mick . Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<< |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4715 |
Hi BigMik, I've given it a thought as well. 1/ The top section could be all passive. For every pixel a 3mm round permanent magnet. The bottom section has (for each digit segment) a rotating gutter, that holds the balls up (so they stick to the magnet) or scrapes the balls from the magnetic surface, and keeps them in the bottom section. 2/ The top section could have a system as in 1, that brings the 3mm magnets to the surface of the top section - or - pulls them away from the surface (so the balls don't stick). This could be based on small RC servo's, each driving a digit segment worth of magnets (28 servo's...that uses power). Then the bottom could be all passive. But yes, they could all be electromagnets counteracting permanent magnets (so you only need short -pulse when to drop a ball, +pulse when to attract a ball). Volhout PicomiteVGA PETSCII ROBOTS |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4715 |
I found it... arduino page Volhout . PicomiteVGA PETSCII ROBOTS |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4715 |
Some people have a strange kind of humor... For all that doubt: this is an alarm clock . Must be quite an experience, to wake up besides this..  Volhout PicomiteVGA PETSCII ROBOTS |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7339 |
 :) Edited 2025-03-13 17:45 by Mixtel90 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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