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1  Using Arduino / Project Guidance / Re: Set up and Program Help!! on: February 14, 2013, 07:18:02 pm
Does the motor have some sort of brake mechanism? Motors, especially large motors, have a fair amount of inertia. Once you get it to turn two revolutions, you'll need a way to stop it.  You can apply a short pulse of reverse polarity voltage, but that might be inconsistent. Hopefully the large motor has a brake.

What I am going to do with the motor is actually add a bunch of gears to slow it down drastically and increase the torque. When I test the small motor the toy has with 3 AAA batteries and the bigger motor with the 12V battery, they both stop and go at the same speed.
2  Using Arduino / Project Guidance / Re: Set up and Program Help!! on: February 14, 2013, 07:14:30 pm
Quote
I want to program the arduino to do to move the dc motor for example: 2 rotations clockwise, then stop, go 2 rotations counterclockwise, stop, 1/4 rotation clockwise, stop, 1/4 rotation counterclockwise
With that motor? Forget it. It isn't a servo or stepper.

I was thinking of using a servo, but they are not strong enough for the right price to handle the heavy equipment being held up by the motor, unless you can recommend one. thank you
3  Using Arduino / Project Guidance / Re: Set up and Program Help!! on: February 14, 2013, 07:13:06 pm
What part do you need help with?

On the programming the software to do those kinds of actions
4  Using Arduino / Project Guidance / Set up and Program Help!! on: February 14, 2013, 12:12:55 am
Hey guys,

I know you guys probably answer this all the time and somehow I cant find the answer after hours of searching, but

I have a 12v dc motor http://www.grainger.com/Grainger/DAYTON-DC-Motor-3LCH7?Pid=search

12v battery http://www.grainger.com/Grainger/RAYOVAC-Lantern-Battery-5U056?Pid=search

Arduino Uno, seeed studio motorshield http://www.seeedstudio.com/depot/motor-shield-p-913.html (It can handle only 2a continuously)

NTE262 transistor which is supposed to be similar to the tip120.

I want to program the arduino to do to move the dc motor for example: 2 rotations clockwise, then stop, go 2 rotations counterclockwise, stop, 1/4 rotation clockwise, stop, 1/4 rotation counterclockwise

If that is confusing I have a video that will show exactly what I mean https://www.youtube.com/watch?feature=player_detailpage&v=97jpVYAhs9o.....the bigger circle in the bottom is connected to the motor through gears that makes the movement.

Thank you so much for any help on this.
5  Using Arduino / Motors, Mechanics, and Power / Re: Parts needed to make a 12v Battery, 12v DC Motor work with the Arduino R3 on: February 12, 2013, 06:16:46 pm
Ok thank you, I figured out where I was going wrong.
6  Using Arduino / Motors, Mechanics, and Power / Parts needed to make a 12v Battery, 12v DC Motor work with the Arduino R3 on: February 07, 2013, 07:01:21 pm
I have been reading for hours now on the forum and various places around the web, but still can't seem to find the exact answer.

My DC motor http://www.grainger.com/Grainger/DAYTON-DC-Motor-3LCH7?Pid=search is going to be powered by http://www.grainger.com/Grainger/RAYOVAC-Lantern-Battery-5U056?Pid=search.

I have the Arduino already, but my problem comes because the motor runs at 3.8a continuously and I dont want to burn out the Arduino since the whole thing would be running continuously for many hours per day

I will also be connecting an H-Bridge to it since I need the motor to go both clockwise and counterclockwise

Thanks for anyone that could help out at all.
7  Topics / Robotics / Re: Low cost Robot Hand (with only one motor) on: February 06, 2013, 07:01:48 pm
That's awesome, great job!!!!
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