Clusterpuck Test Table: Difference between revisions

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[[File:testtable.jpg|thumb|alt=test table|The hackable table]]
[[File:testtable.jpg|thumb|alt=test table|The hackable table]]


==January 22ns 2013 session==
==Table details==
 
*There are presently ~0.040" ID holes on a 1" rectangular pitch. They pass through a ~1/8" tileboard.
*The area over which those holes are spread is roughly 33" x 61".
*The plenum is presently ~0.5" open, though there may be a wider area across the middle. Not sure.
[[File:airhockeyfan.jpg|thumb|alt=airhockeyfan|Fan that was on the air-hockey table when purchased]]
*The stock driving fan, which was, I guess, adequate for the stock puck, is 4.5" across the blades.
 
==January 22nd 2013 session==
Some hacking was done on the Craigslist air hockey table on January 22nd 2013:
Some hacking was done on the Craigslist air hockey table on January 22nd 2013:


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[[File:octopucky.jpg|thumb|alt=octopucky|The incredibly heavy and dangerous "OctoPucky"]]
[[File:octopucky.jpg|thumb|alt=octopucky|The incredibly heavy and dangerous "OctoPucky"]]
*'''Tested a printed puck'''. 3D printed a puck containing a ring of eight of those same NdFeB magnets ([http://www.makersite.com/blog/2013/1/23/clusterpuck-puck-prototype-1-magnet8 See blog post]).  
*'''Tested a printed puck'''. 3D printed a puck containing a ring of eight of those same NdFeB magnets ([http://www.makersite.com/blog/2013/1/23/clusterpuck-puck-prototype-1-magnet8 See blog post]).  
**[[Result 1:]] ohhhhh.... Turns out there's a reason air hockey pucks are normally quite light! Not only is it hard to get it to float (until you hook up the megablower, that is), but also: At these speeds it's quite frightening to have the puck be so heavy!  
**''Result 1:'' Turns out there's a reason air hockey pucks are normally quite light! Not only is it hard to get it to float (until you hook up the megablower, that is), but also: At these speeds it's quite frightening to have the puck be so heavy!  
**[[Result 2:]] the behavior around the hidden magnet under the table surface was definitely even whackier. But maybe not whacky enough to justify the near-certain bodily harm that will result if we persist in using so heavy a puck.
**''Result 2:'' the behavior around the hidden magnet under the table surface was definitely even whackier. But maybe not whacky enough to justify the near-certain bodily harm that will result if we persist in using so heavy a puck.

Latest revision as of 18:31, 5 February 2013

Error creating thumbnail: File missing
The hackable table

Table details

  • There are presently ~0.040" ID holes on a 1" rectangular pitch. They pass through a ~1/8" tileboard.
  • The area over which those holes are spread is roughly 33" x 61".
  • The plenum is presently ~0.5" open, though there may be a wider area across the middle. Not sure.
Error creating thumbnail: File missing
Fan that was on the air-hockey table when purchased
  • The stock driving fan, which was, I guess, adequate for the stock puck, is 4.5" across the blades.

January 22nd 2013 session

Some hacking was done on the Craigslist air hockey table on January 22nd 2013:

  • Increased the airflow. Tried adding "just a bit more air" by replacing the 4" PC case fan... with a 2HP blower! Result: near-catastrophically inflated table, with surface bowing up at least an inch in the middle. Wooops...
  • Figured out the workings. Dissected one corner to learn more about the plenum structure. Result: BUGS! Well, as far as we know only the two stinkbugs hiding in there. But where there are two... hmm. Other result: the plenum is actually very thin, just a ~5/8" sandwich of tileboard top, air gap bounded by particle board, and masonite bottom. The holes are a ~0.040" diameter, and on a ~1" grid.
  • Tested the magnetic deflection concept. Taped a 0.5" diameter, 0.1" thick NdFeB magnet under the top surface. Taped another magnet onto the top of a puck, poles facing (for repulsion). Result: whacky puck behavior! Sometimes rapid invisible-cause ricochets, sometimes complete flippings. We're definitely working in the right direction here! So much fun.
Error creating thumbnail: File missing
The incredibly heavy and dangerous "OctoPucky"
  • Tested a printed puck. 3D printed a puck containing a ring of eight of those same NdFeB magnets (See blog post).
    • Result 1: Turns out there's a reason air hockey pucks are normally quite light! Not only is it hard to get it to float (until you hook up the megablower, that is), but also: At these speeds it's quite frightening to have the puck be so heavy!
    • Result 2: the behavior around the hidden magnet under the table surface was definitely even whackier. But maybe not whacky enough to justify the near-certain bodily harm that will result if we persist in using so heavy a puck.