Fried?!...Back to square one...help?
October 9, 2008
Well I fried my PWM (predicted by ChristheCarpenter) by feeding it about 5 Amps. Alas, back to square one. Would like some definite help.
I could build another PWM with a higher amp rating, but I noticed that as I put a load on the motor the speed was not constant. If would speed up, then bog down, then speed up. I'm not sure if this was due to a insufficient PWM, not enough Amps from the 1.5 A power supply, or lack of a true motor controller.
Hence I am prepared to start over from square one. I do not currently have a microcontroller of any kind. I know I need to buy one in the future because I would like to control my bots speed via laptop in realtime.
Thus, I am asking for help and advice. What do I need? Please remember that my bot needs to push a 3lb box around the floor, with good speed (16 in/s).
I thought about using something like this: http://www.seattlerobotics.org/encoder/200001/simplemotor.htm