Cheap Little Ball Switches

Vibration Sensor Double Ball Rolling Electronic Shaking Switch

10 pcs for ~80 cents US. I tested some, very sensitive to tilt. Works just like a mercury switch with much less hysteresis (stiction), not to mention more environmentally friendly. I measured ~0.5 ohms at a very slight tilt. I'll hoard more of these "poor man's accelerometers". When shaken (not stirred) you can hear the balls inside a bit. ~0.500" long x 0.150" dia.

http://www.ebay.com/itm/272706541370

Related: just saw these and ordered. Sounds like it has a vibration contact spring inside instead of balls. 20 for a buck is worth checking out IMO: http://www.ebay.com/itm/201070228446

s-l1600.jpg

"When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

- Pablo Picasso

Comments

  • 14 Comments sorted by Date Added Votes
  • Can't fault erco for finding a good deal for us! I might have to get a few of these myself.

    The free shipping bit should be of concern to all Americans. It's the dreaded ePacket 5 oz. package, something brokered between the USPS and Chinese government years ago. Add in a tad bit of Chinese subsidy and they can fill our landfills for free, while we pay for it. This falls into the category of a "bad deal" and should probably be fixed by our government.
  • ercoerco Posts: 18,415
    High praise from Monsieur Gracey!

    Another interesting factoid I just discovered is that the ball switches are not magnetic. I'm using them near a large magnetic speaker and I was sure it would be a problem but not so. My backup plan was to use mercury switches, but fortunately I can save those for another day.

    (Psst, yes, mercury switches can still be bought from Ebay China.)
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • MikeDYurMikeDYur Posts: 2,175
    edited August 3 Vote Up0Vote Down
    erco wrote: »
    (Psst, yes, mercury switches can still be bought from Ebay China.)


    I hope we have evolved for a need for such a thing, with it's rep and all.

    I remember a classmate in grade school brought a perscription bottle(snap lid), with about a tablespoon of Mercury in it. He never told the teacher, nor did anyone else.

    I don't remember handling it or know of anyone else that did.

    But I wonder what ever happened to the kid that was messing around with that nasty stuff.
  • ercoerco Posts: 18,415
    edited August 3 Vote Up0Vote Down
    Quicksilver rules!

    2728119-tumblr_mdwb1i59px1qiknbco1_1280.jpg
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • I used to play with mercury. There was a large jar of it in the basement.

    ˙ǝuᴉɟ ʇsnɾ ʇno pǝuɹnʇ I
  • ercoerco Posts: 18,415
    hahahahaha

    Howja do dat?
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • xanaduxanadu Posts: 3,102
    edited August 3 Vote Up0Vote Down
    I̢̥̠̲̫͔͇̻̟͜t҉̷̙͚̰̭̲̤̹̠ ͏̷̷̢̛͖̣̞͙̝̫͖̫ͅͅẃ̨̝̼̙͙̳͓̼̯̥̲͓̪̕̕͠a̢̝̭̺̦̩s͏͔̫̬̫ ̨̢̧̞̲͚̰̩̘̗̞͎̤͖͟e̶̛̞̖̹̭͔̣͠a̜͓̳͉̳̬̪̤͍͘ś̨̭̺̗͖͍͕̼̯̰ỳ͝͏̧̛̹̠̹͓͕̲̜͎̺ ̸͎̤͖̙͍̭̼̬͍̬͚̦h̴̺̩̠͕̮t̷̛̩͈͎͖̳̬̱̺̹͓̜͈̝̜͓͇̻̩͇̀͞͝t̸̛͡͠҉̖̦͈̳̦̝p̶̧͘͠͏͇̞̻͈̰̞̗͖:̴̶̫̬̜͘͠/̶͡҉̧̭̮̰̦̲̙̖̟̰/̠̞̭̟̗̟̫͈̺͙̲̲̖̮̺́̕͢ẁ̡̢̥̗̯͕͈̳̠͇̱̤̦̞̣͇͙̠̫̪͘ẃ̢҉͎͕͍͇͈̟͎w͢͏͙̩̞̞̦̱.̲̮̩̝̻͜͟ư͇̩̫̹̱̤̲̙̺̮̘̙̺p̡̼̹͔̮̩̺̞͇̹̠̲̳̠͢ͅs̢̖̪̲͉̯͉̖͍̱̤͘͞i̧̱͓͖̠̖͎̱̦͈͖̯͓̰͢͢d̴̪̯̩̤́e̵̤̭̗̣̲̞̻̭̳̠̭̮͍̠̳͞͠d̡̛̪̣̼̬͉̬̭̝o͟͞͏͓̮̺̞̘̹̬̜̖͙w͏͠҉̛̛̬͉̪͙̺͔ͅn̷̷̛͉̪̼̦͍̥̦̩͈̕͞t̸̵̲̻̖͈͙̘̟͇̤͓͘͜͡e͡͏̛̠͚̯͍̫̜̗̦͇̀x̨̡̛̲̘͈͍͚̳̖t̺̰͙̪̟̜̣̻̙̩̬̖̠́͠.̶̧̨͘͏̲͈̹͚̖͕̖̼̝̪͕͕̯̱̤͎̱c҉҉͠҉̯͖̠̫́ơ҉̲̟̮̥̩̪̬͔̤̱̭m҉̸̢͈̩͖͔͚̖̦̯̟̟̲̭̙͟͡/͖̣̤̥̞͖̯̙̞͔͞͞

    or http://www.upsidedowntext.com/
  • Before any moderators ban me for nonsense posts, I am working on some Parallax related stuff :)
  • ercoerco Posts: 18,415
    You must always view the Matrix encoded...
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • Ah Unicode. It will be the death of us all.

  • ˙sʞuᴉɥʇ ǝɯ 'ooʇ ʞO ʇno pǝuɹnʇ

    Looks a little rusky.

    ˙ɔᴉɥdɐɹƃ ǝɥʇ ǝʌo˥ ,erco
  • Heater. wrote: »
    Ah Unicode. It will be the death of us all.

  • JasonDorieJasonDorie Posts: 1,918
    edited August 7 Vote Up0Vote Down
    Among other things, I was responsible for extracting glyphs from TrueType and OpenType fonts for our game at the last company I worked for. I still have this mug at my desk:
    Unicode.jpg
    404 x 539 - 45K
  • As a kid, I had a tiny bottle with about 1/4 teaspoon of mercury in it. No idea what happened to it tho' !
    My Prop boards: P8XBlade2, RamBlade, CpuBlade, TriBlade
    Prop OS (also see Sphinx, PropDos, PropCmd, Spinix)
    Website: www.clusos.com
    Prop Tools (Index) , Emulators (Index) , ZiCog (Z80)
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