RE: [CAD_CAM_EDM_DRO] Re: unipolar stepper and 5804

Yup – working that direction right now, although doing so really points to
why living in the digital age is pretty cool (not withstanding the Global
warming issues). Eg, once we get going, we will have to calibrate for
running 5 – 10 M in ½ M intervals, so 11 different counts or times. This is
actually turning into a nice learning exercise for the kids and me – doing
this with old technology 555’s and then (hopefully) moving it to a PIC
control. I kinda missed the digital electronics revolution after moving
back to the family farm in the 80’s. thanks, Chuck

>>>You could have one 55 acting as a monostable which powers the second

555 pulse generator circuit for an amount of time set by a
potentiometer. This could be calibrated to distance even without a
scope or any maths (just do tests).

Using a multi turn pot would probably give the best results in terms
of accuracy although it might make labeling more difficult.

Just a thought for simple get you going system.

Graham
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