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| Jimbo:
Hi all, thanks again for the replies. I managed to get a car mechanic friend of mine to donate a 12V power window motor to my cause! :) It's quite a beast (bigger than I had originally envisaged) but it looks like it might do the trick: - Its a bit too big to mount on the front side of my monitor's seat, but there's enough room behind the seat frame to mount it there, so the drive shaft would slot through a drilled hole in the frame and I could stick the aforementioned "drum" or sprocket level with the rotating monitor wheel: - The red line in the above photo is where I thought I could put some sort of barrier to prevent the magnetism knackering the monitor, since the motor is sitting quite close to it. Does anyone have any thoughts/advice on whats best to use here, or if you could see a better way of protecting the monitor? koz319, I like your setup, it seems nice and simple, and I'm thinking either the rope pulley system or maybe something similar to yours would be perfect. I could possibly (through my mechanic friend) get hold of a car cam-belt and sprocket. As the monitor is only rotating 90 degrees in either direction, I figure the toothed sprocket on the motor shaft would be needed, but I could glue or pin the cam-belt to the monitor wheel, negating the need for any toothed-system to be attached to that. I'll be trying to sort out a power supply for the motor over the next few days, and I want to start thinking about wiring up a circuit to limit the rotations to 90 degrees. Ideally I'd like a single microswitched pushbutton on my cab that starts the rotation in the appropriate direction, I don't want two buttons (one for each direction). Eventually it would be nice to wire it to the parallel port of my PC so I can rotate through software, depending on the game. |
| DaOld Man:
It cab be done pretty easy with two 3PDT relays, rated at the current the motor draws. You will need two limit switches. I had a drawing of what I was going to attempt to do, but I cant find it now. I will post it when I come across it. Also koz mentioned a H bridge which would do the trick too. |
| kelemvor:
I think it'd be cool to put a big crank on the side of the cab and you could just go crank it around. Would be more of a neat retro mechanical look. heh. |
| DaOld Man:
Yeah, crank out some games, man! :cheers: |
| Anubis_au:
Jimbo A good starting point for the electronics design is this page: http://lillypad.4mg.com/lillypad/extraspad.html Though I've seen other designs. If I stumble across more I'll post a link. I'm still wondering how I am going to couple the motor to the circular plate in my future cab. Good luck with your implementation. |
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