Hello all. I'm trying to find out what motor to use in my robot. It will have 4 powered motors, and a weight of about 1 kg. It needs to climb up a 30 degree incline, the acceleration below was approximated using the equation on the calculator page.
1. Are my calculations correct? Here is the motor I was considering, which doesn't seem to have the torque I need?
http://www.solarbotics.com/products/gm3/Also, I haven't finalized the motor type I'll be using. The robot needs to follow a given path stored in its microcontroller, to a fair degree of accuracy (let's say within 20 cm of final theoretical destination after following a 5m long curvy path). I also need the entire motor driving + sensors (if I go with DC motors) to cost <$40. So the choice is either continuous servos, or DC + encoder (i'm guessing a custom-built IR). Keep in mind there must be 4 total motors for this price, and they must handle the above torque.
2. Which is the better choice, DC or servo?
3. What advantage would I have with a continuous servo as opposed to DC, unless I can buy a continuous servo that has position control (not just PWM speed - same as DC)?
Thanks guys.