this time i need to feed fabric to sewing machine and it should be doing by 12 v dcmotor coupled
wheel set.i can get one signal from by needle positioner and it is 5volts output for every stich .
according to that signal's frquency, dc motor must modulate it's speed.
to synchronization of digital signal and dc motor speed ,the operator must enter the(factor) value via keypad.
the problem is using FLOWCODE its pwm does not vary the speed in my range.its very fast.i need 15rpm and some times much more slow than that.
the signals i have
1)needle up signal 5v for every stich
(its frequency is varying 10 Hz to 100 Hz)
i need to control the motor according to the frequency.
I have no clear idea to doing this.PLEASE HELP.
![Question :?:](./images/smilies/icon_question.gif)