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1. How to find out the maximum current drawn by these motors at max load?
2. How to protect the microcontroller from the high currents?
Hi I am building a tracked bot which will use two cordless drill motors (12V to14V). I have managed to hack the torque drive so that it outputs a constant torque. I have two PIC18F4550 microcontrollers which I am planning to use as USB interfaces.My questions are:1. How to find out the maximum current drawn by these motors at max load?
3. I have this attached basic circuit that I am planning to use for the USB interface. The circuit shows a stepper motor which I will replace with the DC servo.
Hi Soeren... I have measured the stall current for the motor, maximum reading i got is 22 Amps. So my questions (2 and 3) can be combined as: whats the opto coupler that can handle this current? or is there any other way to protect the microcontroller?
Anyways... It would be better not to parallel them like that... Why?Mosfet are temp. sensitive devices... The hotter the more current through them...