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Notice in the g-code above a value of X1128; in mm that is over a metre, or 44", from a 20 x 30 mm rectangle. Now maybe this is because I was using the wrong Inkscape SaveTo > DXF, it has two, here...

The following examples were produced on an Ubuntu PC by ooDraw, Inkscape and dxf2gcode. The image starts off as a 30 mm x 20 mm rectangle in the top left hand corner, it ends up a little larger and...

I have by now, but only just, routed a small pattern into a piece of masonite.

I used CorelDRAW to generate the pattern and saved it as DXF. I used DXF2G-CODE to create the G-code file. This...

Thanks Bob, you might have hit the nail on the head saying there is a key up code that might be corrupted. If the repeat function is inside the PC then that would explain why I see no repeat traffic...

The attached drawing shows my attempt at making a keypad by chopping off an old PS2 keyboard. I added a 7405 (open collector) buffer inside the original keyboard connected to a PS2 socket on the...

You can make X,Y,Z anything you like. David's book has several plans 17x20, 25x37 and 27x64. I fell sure you could happily stretch them but you might lose rigidity. Search the web and you'll find...

I downloaded schematic, assembly, parts list and copper from the pminmo website and made three driver cards and one interface. I used a laser printer at the library to print the copper positive...

I have one of these DC Servo Motors from Japan Servo marked DF10BT22-8 D.C. 20V, 101A4636371 No. 0912 with RED and BLK wires coming from the large section and two PNK wires from the small section. ...

In COREL I lay down a 1/2" grid, group it to the whole drawing and then move the drawing around in the frame with vertical steps of 10" and horizontal steps of 7.5" (or the like) I then just printed...

Google translation:
Friends I have conseguiunos unipolar engines of some printers, the truth is not what printer is, but I need to know its consumption (I) and supply voltage (V) to be used, nor how...

If the piece of wood to be cut is not itself limited by the size of the travel in one axis and the piece can have extra holes could you (1) use the CNC to make a series of inline holes in the...

I came searching for these very calculations as I'm presently installing limit switches to the bed and carriages on my ongoing CNC router. Should consideration be given to the momentum of the...

I purchased Japan Servo KP86SM2-002 etc from Toronto Surplus & Scientific, www.torontosurplus.com. Unfortunately they are still untested by me as I have yet to build the electronics.

I can't answer your question but this might be an interesting link for someone interested in the theory of Stepper Motors.
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If run in the same cable I would expect there to be a lot of noise picked up on the status lines from the heavy current switching on the motor lines. My CNCs not running yet but similar circuits at...

A dead microwave oven will get you up to three microswitches a couple of relays and two magnets for your next wind generator project.

You might try grounding the control inputs or loading them with 1kohm to ground.

Unlike a 7404 the 7414 is a hysterisis device. A short noise spike into a 7404 might be passed as such but a 7414...

I have had speedy delivery of steppers from SOC Robotics in Vancouver (www.soc-machines.com) and Toronto Surplus and Scientific (www.torontosurplus.com). None of them have been run yet but I do...

Have you also looked at the KBCTools.com GRIP line of lathes from 9x20 to 26x120 with three branches in Canada (but not near me). If nothing else it is fun reading through their catalogue. Nothing...

My first attempt at a CNC Router is based on David Steele's book with an old EIA 430 Plotter (circa 1972) as the base which I purchased from goverment surplus some 25 years ago. The U-frame sides...