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HobbyCNC | CNC for the desktop machinist and hobbyist.

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you could engrave the sizes and such next to each hole in the melamine.

John

the driver needs to be set via dip switches to set the current, however its lowest setting is way above the needs of that motor and yes you can burn out the motor, melt the insulation fry that puppy...

Only thing I see is that your motors are .65 amp, and that driver goes only as low as 1.5amp, could possibly have to do with your heating issue.

Just a thought.

John

Hi, So in the end I got another frankie for my project, one that gained the wifes approval, go figure....

I ended up planing some faded maple I had laying around and discovered some really nice...

I'm quite impressed, and not a little jealous, I'm still working with my home-built, half built machine.

John

Hi Kevin, I played with vectric's photo vcarve trial edition, but didnt think the results justified the price. So instead I use the free program, BMP Bender found on this forum to create stl files...

I have the sign laid out ready to cut, but havent gotten around to planing an 8x10 piece for it yet. I'd really like a bas relief sign just didnt expect to find one readily. Of course you can never...

Thanks again, Thats a real nice one, perhaps I'll save it for Halloween, but I think the first one had more flavor, I have it almost ready to cut, I think....

John

Thank you Jalessi, looks like a good starting point, I'll see what I can do with it.

John

I have named my cnc "Frankenstein's Monster" and I want to make a sign for it, does anyone have a dxf for frankenstein's monsters head?

John

NEMA34 Stepper Motor - Changzhou Longs Motor Co.,Ltd

um, says 2 amps per phase, depends on how your going to wire it I think as to how many amps to set it for, perhaps someone more knowledgeable...

????

Looks like the dip switch settings are listed on the front of the driver
John

Power draw bar with an eye to a 12 tool changer.

John

Very nice, thank you

all you need to do is change the name to remove the .txt

John

your running 3 amp steppers at 4.2 amps, no wonder they get hot, cut it back to 3 amps, that should at least help with the heating(keep you from frying the motors).

John
oh, and cut the...

make cnc's prices are really cheap, its only 4 bucks, you should just buy it.

John

Sorry, I've had a busy couple days. The resistor looks fine, no signs of burning or overheat. The chips are SLA7078MR s.

All my J4 jumpers are in place, I've never used the current reduction...

I dont know if this will help, how accurate it is, or if it will be any help.

But I found this in a post about modifying the board.

John

I dont have one of mine, but here is a close up from hcnc's webpage.
The problem axis is Y, so would that be R10?

John

Thanks, which one would that be?

John

The Y did feel weaker, and swapped it with the z and it followed the driver so I .ooked my y motor to my "a" driver and it appears to have fixed the problem for now.

Guess I need to start thinking...

Hi, Not knowing what control software your using, I had a similar issue with carving a car model and considered using mach3's "z inhibit" function to do it in successively deeper passes.

Just a...

Hi,
I built my diycnc using a 4 axis hobbycnc pro chopper board. I have only been using 3 of the axis, so far and lately I've had problems losing position on the y axis, checked everything...

velocity as set in motor tuning is the maximum the motor will be run, you cant override that via feedrate

John

Spent some more time with the machine today, since the lables on the new drive are in english I was able to ascertain that the drivers are set to run the steppers at 2.5 amps not the 4 amps I...

Jeff, I already had everything done but the engraving/vcarving so your quick response got pounced upon. I really appreciate your work and everyones assistance with all the projects that run thru...

Thanks a lot Jeff. It was perfect.

John