1 Continuous MCPWM at a time

[barneyfrance]

hello, no I did try your great ideas, the case work for the forward direction but as my elseif code the case code for the forward does not work because the second half of the commutation is the same as the previous one. So in that case I think I need to have the old case. I will keep trying experiments, thank you for your time and ideas

[barneyfrance]

Do you have a good software for schematics ??

[HenrikOlsson]

Hi,
Personally I use EAGLE from CADSoft, other popular packages are DipTrace and KiCAD but there are many many other in various priceranges. TARGET, OrCAD, Protel, DesignSpark, EDWIN, AutoTrax are a couple that springs to mind.

[barneyfrance]

thanks eagle seems pretty nice, we have orCAD at the university but I really don't like it...
I'm gonna try this eagle thing

[barneyfrance]

you're right lol... I'm sorry that you've waisted your time with me, I also figured this out yesterday :s I waisted my time too.
My last problem is to be able to switch frequency only if my pot = 0 (duty cycle = 0) so that the motor won't stall..
Any ideas ?

[HenrikOlsson]

You mean switch direction when the pot is 0, right?

GOSUB GetADC
 
If PotValue = 0 THEN
  Direction = PortB.7  ' Or whatever
ENDIF

This won't touch the Direction variable if PotValue is >0.

[barneyfrance]

Hello,

With your help, my motor works perfectly fine. Thank you very much.
However, a weird thing happens every 1/2 mins, it seems that my chip reset by itself. Does anyone know where does that come from ? I have a 6.7k resistance on MCLR is that not enough ?