Hello,

I have a couple of questions about my stepper circuit.

first, the stepper has a resistance of 1.9 ohm/phase (omega/phi)
I'm using 10 ohm resistors, little ones, 1/8 or 1/4 watt,
 and 12vdc for the power.
(using a 5804 stepper controller)

These resistors get so hot they melt the plastic proto-board.  I guess
I need more wattage on the resistors, is this correct?  will higher
wattage resistors not get as hot??  And how do you calculate what
watt is required?

Would it be 1.01 amp * 12 vdc for a 12 watt 10 ohm resistor?  This
seems or sounds like something up on the pole....

I wanted to make this motor move, it's late(or early), and I only have
what's in my parts box...so I'm guessing about how to calculate the correct
values of parts required.

ANY help is much appreciated, thanks

Second, the motors seems to jump around occasionally, my program
steps 400 steps in one direction, then reverses and steps 400 steps the
other way. ( this thing is 1.8deg step angle, set on half step)

I'm sending a 10ms pulse then pausing 10ms.  How do you determine or
what's the difference in pulse width using this 5804 controller.  And
what about my pause of only 10ms, any problems with this??

thanks again

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