operation cnc

[martin54]

Sure you could cancel the order for the board if required or look to sell it at a latter date if you decide to upgrade the board at a latter date. Think the board that Jazz has mentioned is the one that Michael has in his machine, as Dean had a lot to do with the build it wouldn't surprise me at all lol.

[JAZZCNC]

Think the board that Jazz has mentioned is the one that Michael has in his machine, as Dean had a lot to do with the build it wouldn't surprise me at all lol.

Yes your right but had nothing to do with me.! . . (Well maybe a little) Michael mostly worked that out for himself and seen has it was on his way home sort of thing he called in and got one.!!

[kingcreaky]

small update.

X Ballscrews on... and connected to gantry using chai's bearing blocks... (although run out of m6 cap bolts, so ordered some here tomorrow) - incidently, that means ive used 200

pulleys done on X, was very suprised at how effortless the gantry moves when turning pulleys. I was initially worried the steppers wouldnt have the balls but the gantry moves very easily.

I was even more suprised to see, if I just turn one ballscrew the drive goes down the ballscrew across the gantry through the other ballscrew and turns the other pulley.... thats got to mean ive done something right?

there is a bit of track... if you hold one pulley and turn the other... I think ultimately I will connect them both with one big belt.

seperately... Ive managed to scavenge a electrical inspection box from the darkest dungeons of where I work.... perfect for all the electricary and can be mounted to the machine.



and.... cnc4you breakout board arrived today, along with the required extra steppers and a e-stop. CY cable also arrived from other supplier.

so, bit of luck may get a bit of ignition/fires on Sunday????? sooo excited.

[kingcreaky]

need to share it with someone.. none of my mates appreciate the sheer brilliance

ITS WORKING!!!!!!

may of wasted potentially 200 notes on breakout boards that i didnt need... but il explain when im less excited.

[GTJim]

That's sounding good. But let us in on your breakout board issues.

[Jonathan]

Now draw it without overlapping any lines or retracting the pencil ;)

It sounds like the acceleration on your machine is set quite low, what value is it currently? You should be able to get at least 1m/s^2 comfortably.

In mach3 there is a list linked to from the main screen which explains what each G-code does, so it shouldn't be difficult to work out what the initial commands do and how the arc command has been used to construct a circle.

[JAZZCNC]

Little tip with G-code. G0 and G1, G2,G3 are whats called modal commands so you don't need to repeat the G0 or G1 after the first instance IE:
G1 x10 y10 f200
G1 y30 z-12
G1 x50 y20

could be written.

G1 x10 y10 F200
y30 z-12
x50 y20
The G1 linear command will stay in affect untill it's cancelled by either another Modal command Like G0, G2,G3 or a cycle command like G83 drill cycle.
Same goes for the F# this feed rate will stay in affect until changed by another F#

[kingcreaky]

Ok... so all seems well... Y is working, Z is working. X however is causing me grief

as previously explained X has two steppers... I have set X to be one, and A to be the other

then in mach3 set A to be the slave of X

Ive wired the stepper drivers in 'active low' so

A-----------
PUL(+5V) --- 5v feed
PUL-(pul) --- PORT 9
DIR+(5V) --- 5V FEED
DIR-(DIR) -- PORT 8

X----------------
PUL(+5V) --- 5v feed
PUL-(pul) --- PORT 3
DIR+(5V) --- 5V FEED
DIR-(DIR) -- PORT 2



both steppers turn correctly... however I need to reverse one... so it kinda goes in the opposite direction to the way its presently going?
doesnt matter which one...

make sense?

also, obviously im using a stepper controller for each stepper... cant I just use one controller for both?

[JAZZCNC]

Just Change either of the DirLow active in Motor outputs and it will spin other way.

Yes you can control 2 motors with one drive but not good idea because of the way they work and sharing pulse's etc, just don't do it.!!
Also if your slaving motors you want away to control each motor for squaring the gantry and one drive won't allow that.

[Danielroyal25]

Looking good! Is that a springer in one of the pics?