My turn for help with Pulse multiplier for test rig.

[irving2008]

Hi Dean,

You wanted a learning experience so I deliberately left some info off the diagram. :)

These chips come in various package formats, the suffix identifies which so decide how you're going to build it and get the appropriate version. If you're breadboard it you need the PDIP package.

I don't foresee any major changes and these chips are only 30p or so so get them. Maybe even a couple of each just in case :)

I do need to consider Jonathan's valid suggestion re direction so there will be a v0.2 shortly.

[JAZZCNC]

Hi Dean,

You wanted a learning experience so I deliberately left some info off the diagram. :)

Good man I like a challenge. . Lol

These chips come in various package formats, the suffix identifies which so decide how you're going to build it and get the appropriate version. If you're breadboard it you need the PDIP package.

Yes BB at first then will probably make a better job with a board.

I don't foresee any major changes and these chips are only 30p or so so get them. Maybe even a couple of each just in case :)

I do need to consider Jonathan's valid suggestion re direction so there will be a v0.2 shortly.

Ok there's no rush so I'll wait until everything settles down then just buy a load of bits at same time and I'm sure there'll be plenty of Magic smoke in the air so I'll get spares. . Lol

Not being savy with these electronictrickery gismo's then it's probably technical chip stuff why it's a problem but Won't the drive take care of the Direction just with 5V on the Dir pin.?

[Jonathan]

Post #48-49: Looks like that was meant as a serious comment - sorry I didn't realise.

Not being savy with these electronictrickery gismo's then it's probably technical chip stuff why it's a problem but Won't the drive take care of the Direction just with 5V on the Dir pin.?

If you apply 5V across the DIR pins the motor will spin one way, apply 0V (or leave disconnected) and it will spin the other way. You could could do that simply with a switch if you're happy for the machine to go in the direction set by the switch, not follow the direction in which the MPG is spun.

[JAZZCNC]

If you apply 5V across the DIR pins the motor will spin one way, apply 0V (or leave disconnected) and it will spin the other way. You could could do that simply with a switch if you're happy for the machine to go in the direction set by the switch, not follow the direction in which the MPG is spun.

Obviously I know this and thats what I've been doing just with MPG. This is what I've been saying I just want it simple so flicking switch is fine and spinning mpg just for movement. Just I need faster than the single pulse the MPG spins at but still want the abilty to single step when needed.

555 + MPG would work and would probably be simplist but I don't mind playing and want to learn something in the process and so long as Irving or some other kind sole doesn't mind giving directions then I'll wait and see all the options.!