Software Support > Automated Projects
General questions about MRotate
DaOld Man:
--- Quote from: darthpaul on April 16, 2011, 03:05:10 pm ---If wav is easiest then make it wav, since I have a Star Wars themed cabinet, I thought it would be cool to have the Star Destroyer's emergency alarm sound as the monitor rotates.
--- End quote ---
Working on it. I will let you beta test it when Im done.
slug54:
Hello,
I am looking to rotate a 20" LCD monitor on a lazy susan berring and I would like to turn it using a belt and pulleys attached to the motor and rotation assembly.
I would like some suggestions on what motor and motor driver board to use.
Also is there something wrong with belt drive? Seems most people use friction drive so I just wondered.
Thanks
DaOld Man:
I dont think there is any wrong way to do this. As long as it works, and there are no fire hazards or dangers to people (keep moving parts covered so little hands cant get to them.)
I have seen a few others using belts and pulleys.
As far as the motor, if you want to turn the monitor fast, then use a big motor with only one belt, if you want to use a smaller, less powerful motor, but dont care about how long it takes to turn the monitor, then you can use more than one belt, each small pulley connected to a larger pulley by a belt increases the power of the motor, but decreases the speed.
I would suggest you look into a automobile windshield wiper motor. They have a gearbox built on them, so the output is not real fast, but it has quiet a bit of torque. They are also fairly cheap and easy to find on ebay or at a junk yard.
As for the drive, I made my own out of a few transistors. Its not very hard and I have complete details in my first rotating project. You can also use relays (but cant control speed), and you can buy drives ready to hook up and use.
I will try to get together some links when I get back home and post them here. (Im currently on a business trip).
Good luck with your project and feel free to ask for any help.
Le Chuck:
--- Quote from: slug54 on March 21, 2012, 07:50:08 pm ---Hello,
I am looking to rotate a 20" LCD monitor on a lazy susan berring and I would like to turn it using a belt and pulleys attached to the motor and rotation assembly.
I would like some suggestions on what motor and motor driver board to use.
Also is there something wrong with belt drive? Seems most people use friction drive so I just wondered.
Thanks
--- End quote ---
slug54, you should read through this rotation thread as well. There is a lot of good information about bearing types including lazy susans, and different drive solutions.
I suggest getting a bearing that isn't a thrust bearing because they have a low tolerance for a verticle application. As for the drive you can a great example of the friction wheel/windshield wiper drive on DarthPaul's automated cabinet build. There are pros and cons to all the methods and you'll see the friction wheel a lot because it's low cost, stable, and fairly simple to control.
DaOld Man:
First link, from one of the masters himself, Cornchip:
http://forum.arcadecontrols.com/index.php?topic=62577.0
Cornchip used chains and sprockets but pulleys and belts should be along the same lines.
Hats off to Cornchip! A pioneer in this rotating business.
Another great project from another pioneer:
http://forum.arcadecontrols.com/index.php?topic=59170.0
csa3d did a most excellent job of rotating his LCD with friction. Also he did an intense write up on the printer port, which I was too lazy to do.
Another master! KOZ319 inspired me to do my first project.
He also introduces the home made H drive, capable of driving the big motors, such as a windshield wiper.
http://forum.arcadecontrols.com/index.php?topic=72638.0
And the project that looks good enough to take the show:
http://forum.arcadecontrols.com/index.php?topic=75411.0
Weisshaupts The Ghost In The Machine.
I know there are more, and I will see if I can find them later.
The biggest drawback to the way the masters did it is the printer port. Even though a cheap PCI printer port card works, most people tend to shy away from it.
I started designing a special MRotateUSB, which uses a usb interface, just need to get off my lazy asbestos and finish it up.
Whatever you decide to do, rest assured you will have plenty of folks here more than willing to help.
And if you come up with a new way to do it, please share it.
I would like to see a contest to see who can do the rotating monitor jig the cheapest and simplest way.
Cheap= using readily available parts that cost nothing or very near to it.
Simple= easy to set up and easy to use.
Special challenge: use AC motor.
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