Saturday, June 25, 2011

CrazyEngineers Forum - Electrical & Electronics Engineering

CrazyEngineers Forum - Electrical & Electronics Engineering

Which motor shall i use?

Posted: 24 Jun 2011 05:56 AM PDT

I m interested in making an all terrain robot. It'll basically run on wheels, or i might change my plan to 'belts'. But the basic question about is the motor that runs the wheels/belts.;)

I have been using those DC motors, which are of average size, of 30/100/200/30 rpm, etc. for all my other robots. they require around 12 volts & 1 amp. The thing that am worried about is that the torque provided by those motors, on a 'muddy terrain', might not be sufficient. Although the wheels r BIG, the motor is the key to the locomotion of the robot, according to my experience. So i wanna make an informed decision so as to choose a suitable motor, for a 'muddy/swamp-like/sticky' terrain. Openly speaking, the robot will run on an agricultural field!!:D

Note- A friend of mine suggested 'motor bike starter motor'. I have considered that as an option, but i want to hear it from you guys before i kick start my project. I know CEans would help me out on this one :cool:

losing potential

Posted: 24 Jun 2011 02:58 AM PDT

consider a very simple circuit consisting of resistor and a dc voltage source.
How do electrons move in the wire(connecting resistor and source) when there is no potential difference across its ends.
considering that voltage refers to measurement of potential energy that exists to move electrons from one point to another.
where am i wrong here?
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