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Ideal motor for my project? Answered

So I am building a pan and tilt boom rig for a camera. I have the basic idea down but I was wondering if I should use servos or stepper motors. My biggest concern is that when I stop the motor turning at any given angle, It won't rotate back down due to gravity. I am using arduino to process and a joy stick to control which motor turns and which direction. Also, as some additional advice, I was wondering how to control the speed with the joy stick, it runs off potentiometers. 

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rickharris
rickharris

Best Answer 6 years ago

If you want a motor that is locked (more or less) when un-powered go for one with a worm gearing. This only works one way (by driving the worm gear)

Servo and Stepper motors will rotate under force if not powered.

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rickharris
rickharris

Answer 6 years ago

To control the speed of the motor I would suggest using PWM, pulse width modulation, although if you search speed control you should find other alternatives on the site.

If you want forward and back you will need to use an H bridge - again you will find the information on a search.

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ubdussamad
ubdussamad

6 years ago

Stepper are the best because they serve prescise movements only if you have a good and complex driver circuit.Using an auridno for controlling the stepper is the best.

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mpilchfamily
mpilchfamily

6 years ago

You control the speed in your code. So your code will see how much voltage is coming from the pot since it will be in an voltage divider arrangement. You'll set your code to move the motor/servo fast or slow based on voltage ranges.

You should be able to find a servo that can handle the weight. If not get a continues rotating servo and gear it down so it can.