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| TopJimmyCooks:
--- Quote from: BadMouth on September 04, 2013, 08:57:21 am --- --- Quote from: GoYouSalukis on September 04, 2013, 07:52:02 am ---I started with a lazy susan and friction drive, but the one I had had too much slop for my taste. If I were to try the lazy susan again, I would probably try this version: http://www.rockler.com/product.cfm?page=32252&site=ROCKLER --- End quote --- That's the type I'm using and I'm happy with it. Various sizes are available on ebay. I didn't like the way the hardware store lazy susan bearings rode on the bolt through the middle instead of the bearings when mounted vertically. These have an inner and outer race with the bearings in the middle. So the weight is on the bearings no matter what position it's mounted. --- End quote --- I've never seen one with a bolt in the middle. I used one like this but the next smaller size costing about $6. from Lowes. The weight is on the bearings. The rockler one is definitely nicer and has more bearings/molded bearing race instead of stamped sheet metal and therefore less friction and play overall. http://www.amazonsupply.com/capacity-bearing-turntable-bearings-vxb/dp/B002TIPWNQv --- Quote from: GoYouSalukis on February 24, 2013, 10:07:44 am ---.......... I like my setup, and it works great for a flat display like the Super Pac-Man, but I am not happy with the low viewing angle. Especially with a large control panel pushing me further away from the screen. I may modify the cab to tilt the display up, but I don't think the servo has the huevos to rotate a display at that angle. I bought the cheaper servo from vex. I should have bought the stronger one, but I didn't anticipate my issue. . . . --- End quote --- Friend, you said above in your own thread that there are issues with your implementation, per quote from you above. I wouldn't push it as a solution until the bugs are worked out. Not to be negative at all. I really like the gear driven turn table, but it's plastic and tiny and I suspect you need less friction on the bearing and gears (caused by unanticipated lateral load) more than you need a bigger motor. |
| DaOld Man:
And worth mentioning, actuator driven monitor rotation rigs. General discussion: http://forum.arcadecontrols.com/index.php/topic,119594.0.html Badmouths: http://forum.arcadecontrols.com/index.php/topic,119308.0.html Mine: http://forum.arcadecontrols.com/index.php/topic,119378.0.html I know there are more, one with a lego actuator, but I cant find it, or it could be in one of the above links. Edit: it is in the link with my setup, just found it. |
| Demon-Seed:
My build is likely not happening for a bit, but I almost have enough in my pay pal to buy all the parts for the rotating stuff! I think that I am going to buy it and start to tinker with it, before I do a build. What screen sizes/types are being recommended? I have been leaning towards a LCD tv or screen, however I am not sure I will be a fan of the elongated horizontal games. Any recommendations? One other thing I was wondering, in many of the projects I see a large hinge, looks like a screen door hinge? whats that for? Thanks so much! Jim |
| GoYouSalukis:
--- Quote from: GoYouSalukis on February 24, 2013, 10:07:44 am ---.......... I like my setup, and it works great for a flat display like the Super Pac-Man, but I am not happy with the low viewing angle. Especially with a large control panel pushing me further away from the screen. I may modify the cab to tilt the display up, but I don't think the servo has the huevos to rotate a display at that angle. I bought the cheaper servo from vex. I should have bought the stronger one, but I didn't anticipate my issue. . . . --- End quote --- --- Quote ---Friend, you said above in your own thread that there are issues with your implementation, per quote from you above. I wouldn't push it as a solution until the bugs are worked out. Not to be negative at all. I really like the gear driven turn table, but it's plastic and tiny and I suspect you need less friction on the bearing and gears (caused by unanticipated lateral load) more than you need a bigger motor. --- End quote --- Its all good. That was written 6 months ago. I have not updated that thread after finishing. I was concerned at the time, but it turned out to not be warranted. I did modify the viewing angle up to around 30 degrees off of vertical and the servo has no problems turning the display quickly and smoothly. All I had to do was bump up the voltage from 5V to about 7V. 9V is too fast, and 5V was not quite enough. In my opinion, the turntable is quite strong. If you take a look at some of the robotics competitions that Vex sponsors, their parts are capable of handling some impressive loads. Also, as I stated, I used the wimpier servo, not the beefier one that I linked to, and it has worked great for around 6 months. No slipping, or any strange noises. Don't get me wrong, I wouldn't recommend this for a CRT or a ginormous flatscreen, but for smaller flat screens, I think it works great. I will try to take a new video tonight after the family goes to sleep (I am supposed to be working on a paper for my masters degree!). This method is certainly less tested than the lazy susan and windshield wiper motor method, so hopefully anyone deciding on how to start a rotating screen project will take that into account. Edit.... Here's a link to a new video: A couple notes: my monitor is a SyncMaster 20" 205BW (circa 2007 I think) and Amazon.com lists its weight as 15lbs. I looked at a new ASUS 20" monitor and it is listed at 5.7lbs. Also, my calibrated eyeball isn't very good. The actual angle of my display is closer to 48 degrees from vertical, not 30 degrees as I mentioned earlier. |
| DaOld Man:
Great job Goyousalukus! :applaud: :applaud: :applaud: |
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