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What type and size and of endmill? What depth, and step over, and speed? Rough and finish path or just a finish? I use Alibre and Mach3 all the time, so maybe I could have a go if you want. My...

Send me a PM I can hopefully help you out. I replaced my gears to a belt drive setup, and have all the original gears setting in a box, if you pay shipping I’ll give them to you.

It looks like a 728, if so here are the basic's.
Voltage 120v
Max Continuous speed 2700 rpm
Max peak torque 2880 oz-in
Max continuous stall torque 576 oz-in
Max peak current 60 A

Yes, I think you do need a step multiplier.
This is what the Viper manual says about step multiplier:

“The Step Multiplier setting in the viper sets the ratio of incoming Step/direction pulses...

Hi tjs88yj:
I have a very similar setup to yours, same motors and the viper 200’s different BB though. If you want to see how many steps of error your move from X=75mm to X=0 is, use the e command...

What is the page number that has the incorrect step & direction picture, in the 1.6 manual?

Thanks

Get one of these, or make your own. Makes tool change simple.
...

I think those are Electro-Craft model 727's here is a link to the spec's
http://www.electrocraft.com/files/electrocraft_legacy.pdf

No, no no....the brain outputs 5V on pin 7 not 3.3V. So not all I/O are using 3.3V.

Jess:

If you look at the output of the Brain on pin 7 on both of the Motor and Glass Scale it is 5V just what you want, no 3.3V, so all of you Axis and Motor connections are 5V. I have not checked...

A big Gold Star to CarbideBob. If you looked at the pin out from the scale and the pin out on the Brain, you saw there was an extra wire from the scale 0V orange, and no place on the Brain. So I left...

Thanks, Al. I'll keep plugging away until I get it figured out.

Not really it just gives the pin outs, and that each input pin is “A, B, and Reference are by default pulled to logic high (1) with an internal resistor. And that resistor is 28k ohm resistor”. The...

Just measured between pin 2 and pin 7 and got 1.943K. So the resistor is built into the head, right? I did not add any external opto couplers to the motor encoders or the scales.

Need some help:

Trying to get my new glass scales to work with the Brain. I got the motor encoders to work just fine, but I get nothing from the scales. This is a link to the scales I got, and...

Springlakecnc:

Are your encoder wires shielded? Are they separated from the motor power cables? I had trouble adjusting my motors and drives, had to call Larry, and it turned out to be noise in...

I had similar problems to you, and for me it was the gecko each time. Have you tried swapping the Z drive with X or Y and see if the problem follows the drive? Also with my mill it was hard to get...

The Dell 270's and 280's have a know problem with motherboard capacitors. If you open the case look at the capacitors and see if any have domed tops…(not good). Also does the fan seem to run away at...

Bruce:

In the Brain Control Panel under the I/O tab, and then the X (could be any axis) you have Inputs and Power pin-outs labeled. But for the X Axis you have pin 8 for both Reference and Ground....

Bruce:

In the Brain Control Panel under the I/O tab, and then the X (could be any axis) you have Inputs and Power pin-outs labeled. But for the X Axis you have pin 8 for both Reference and Ground....

What about your CAM post processor? Almost all CAM programs make a post processor for MACH; do you think the BRAIN could use the MACH post processor?

What about your CAM post processor? Almost all CAM programs make a post processor for MACH; do you think the BRAIN could use the MACH post processor?

Me too, please send me information when the new higher power unit is available.

Thanks
Jay

Hey Jeep534:

I’m in the process of doing a similar retrofit. Using the Viper 200’s and I just went to http://toroid-transformer.com./ and emailed them my motor spec’s and they were very helpful....

Try www.LarkenCNC.com they have a 180 volt servo driver.

Just email LARKEN (Larry) and he will send you a PDF directly. I had the same problem. He was having some type of upload problems on his web site.

Jay

Thanks Toby D. That’s what I did. I'll be more careful in the future.

I'm using a VFD on mine.

Are you talking about the dimension tool that you use to size lines circles and such? I just made up the rectangle example for simplicity; the part I drew is complicated lots of 3D contours, added...

I'm running a 3 HP motor on my IH. I have about 100 hours cutting time on my machine now. I also was not sure if 3 HP was a good idea or not, but I decided if I blew up my gear train, that would be a...