My turn for help with Pulse multiplier for test rig.

[FatFreddie]

555 timer hasn't been ruled out but I would have to have the single step option like the detent of the MPG.

How about a hybrid system, keep the MPG for fine control but have a button that also injects pulses from a (variable frequency) 555 timer type circuit? Direction is set by the wheel and that is used for fine adjustments but for rapid traverse, the button is used.

[Clive S]

How about a hybrid system, keep the MPG for fine control but have a button that also injects pulses from a (variable frequency) 555 timer type circuit? Direction is set by the wheel and that is used for fine adjustments but for rapid traverse, the button is used.

Bingo. ..Clive

[JAZZCNC]

How about a hybrid system, keep the MPG for fine control but have a button that also injects pulses from a (variable frequency) 555 timer type circuit? Direction is set by the wheel and that is used for fine adjustments but for rapid traverse, the button is used.

Yes this is an option and will be my backup if nothing full fulls my perfect needs.

Irving I'm following your design and with some googling I've found it uses a Hex Schmitt trigger, Flip flop and down counter so I'm learning already . . . . . . Now I just need to get my head around what they are and how they play together.

While googling the codes have been showing up with letters on the ends like "BE" or "BCM" what do they indicate.?

Should I start to play with this now and get these bits to play with or will there be more versions so hold off.?

[irving2008]

How about a hybrid system, keep the MPG for fine control but have a button that also injects pulses from a (variable frequency) 555 timer type circuit? Direction is set by the wheel and that is used for fine adjustments but for rapid traverse, the button is used.

Yes I'd considered this approach but rejected it as too easy lol, also doesn't truly meet Dean's original criteria.:)