Progress

So the CNC conversion is really not quite done, even though I’ve been using the machine to create parts.  Still lots of cleanup, fine tuning, and other such tasks to be done. Over the last couple of weeks, I’ve tackled the task of buttoning up the stepper motor wiring.  This entailed doing some machining on ...

First Metal!

I made my first part out of aluminum last evening.  I’ve been slowly designing the electronics enclosure, and I needed a means to mount and cool the GeckoDrives.  I designed a mounting plate/heatsink for them, and ran it out of 0.260″ aluminum plate that I happened into as a discard.  There are definitely still some ...

Big Ostentatious Power Switch – Experiment #1

I’ve been starting to think about making an enclosure for Mike’s UCD400 amplifier kit.  I want to use my new CNC toy, obviously, and make something really special.  So I had an idea the other night.  In the middle of the other night.  For which I was awake for several hours thinking about the details.  ...

More Pictures

Here’s a better version of the CNC test, done with a small ball end mill so it looks right: Also, here’s the result of another one of the included G-Code files from EMC2.  Superficially it looks pretty neat, but it exposes some of the issues I’m currently contending with, like backlash and proper stepper configuration.  ...

It’s Alive! 2

Well, the part hasn’t yet arrived from Australia, despite the company shipping it out with all due speed.  Kudos to them for doing that, but the fact is it takes many days for something to get over here from Australia.  In the interim, I went at the suspect part with files and sandpaper and managed ...

Symphony of Steppers 3

I wired up all three axes today, and also hooked up the super high quality 200V DMM module that I picked up on eBay direct from China. Here it is whirring away to the dulcet tones of Andrew Bird from my shop speakers.  It’s running the torus demo from the EMC2 live CD.

Signs of Life 3

Finally had some time this weekend to hook up a stepper drive, stepper motor, power supply, and a PC to see if EMC2 would move a motor.  I’m pleased to report success!  I just wired up a single axis for now, but it demonstrates that EMC2 is properly generating step and direction pulses out of ...

Gecko Infestation 2

The Gecko stepper motor drivers have arrived, along with my cheap and cheerful dual PCI parallel port card.  There should be enough stuff here to make some motors spin, though I’m not going to have any time to play with the new toys until next week.

Three Cheers for Flat-Rate Postage Boxes

My linear power supply arrived today, and it’s big and heavy as I expected.  After poring over data sheets and doing more research and fretting and calculating, I decided to step down to a 48V supply for my stepper motor drives.  Based on the torque vs speed curves and the other specs of my motors, ...

Stepper Motors

The stepper motors have arrived! I went with the same brand that ProMiCA used in their kit, but the higher torque version. Still need to order my stepper drives – probably going with the bulletproof Gecko G203V.  I did briefly consider designing and building my own, but that wouldn’t be free either, and the point ...