OzarkCNC - Arkansas CNC ROUTER Project

[OzarkCNC]

Here is a running update of what I've done in the last 3 weeks.

PROGRESS:

Blew the A-Axis chip during that initial test on 10-10-07. I think a stray lead snip shorted out one of the pins. It actually blew a chunk out of the center of the driver.

Note to self. Buy Inline FUSE holder. That was a $16 mistake I won't make again!

Dave from Hobby CNC sold me another 7062M driver chip. I still have yet to get it installed.

Desoldering is such a pain in the

Have everything for my Power supply.

Had a 24VAC CT 10A transformer from a previous project.

NOTE: My next post will detail on how I added a 5V secondary to an existing transformer. (Just in case I need it)

A few 20,000 uf 45V Electrolytics. If you need one, PM me. I have an extra.

Got some components from MCM last week.

Inline fuse holders
microswitches with red pushbuttons (Like on vid games) for my E-STOP or later for pendant.

Full wave bridge rectumfrier

New TENMA variable soldering iron for $15. Hated the butane one with a passion! Could have got it for 10, but took to long to pay out my cart.

25Watt 680ohm resistor for bleeding off the PSU cap.

100 Skate bearings $30.89 from ebay SHIPPED!

Got some 3/8 x 16 threaded rod for my Z axis (for now and some coupling nuts) I found a concrete anchor that threads onto the 3/8 rod and has an opening on the other end that will nearly fit my NEMA 23 motor.

I might be able to use it as a coupling until I can get some Lovejoys but it doesnt flex, so maybe not. I'll see for 89¢.

Some 1" x 1/8" aluminum angle for my skate bearing slides. So I can start building the Z axis at least.

Cannibalised an old ATX power supply for some components and some awesome heat sinks for the stepper board SLA7062's.

Some nice old 2x10 pine waterbed frames were given to me. I planed the finish off and they are true and straight for my table. Not like the #2 grades you get today.

Have a Dell Desktop PC that went through a fire. Just smoke damaged, but has XP PRO on it. I can't see throwing it out.

STILL NEED TO DO:
Get misc wood, metal. Get my plans on paper. So far they are still stuck in my head and evolving.

Looking at TOUCH PANEL screens, but I don't know. Are they worth the money and how small should I be willing to go. I don't think anything smaller than 10"

Or I have a PABLO Graphics tablet. But that is just 3 more wires and more space. Although it may come in handy later on for the CAD portion. Will shelf that for now.

BOLTS: I've looked at H.D. I cant find any 5/16x1 1/2 with threads all the way up the bolt lenght. I need full threads for my skate bearings.

I think my next stop is going to be boltdepot.com. I just hate to make several orders. I wish I had a good idea on how many to buy of nuts, washers, spacers, U-bolts etc. (Any suggies?)

Oh and I just remembered. A printer cable. All I have are the old DB25 to Centronics. I could cut one off and get a DB25F shell and wire it up. Would be cheaper than a whole cable.

And finally, I need to order my belts and pulleys. I guess econobelt is the way to go.

Thats enough typing for tonight. I'm wiped out... Zzzzz

[OzarkCNC]

Got around to soldreing the replacement A-AXIS driver chip in my 4AUPC HobbyCNC board.

Everything went smoothly. Applied power and nothing smoked this time.

So I discharged the capacitor in my PS and hooked up the motor to my X AXIS.

Power ON. Motor locks like it should. Good.

POwer OFF - Drain PS capacitor.

Hook motor to A-AXIS.

Power On. Motor Locks like it should. SWEET! I did it right.

Now I figured on trying the other 2 AXIS since I hadn't tested them with a motor before.

Power OFF. Discharged cap.

Hooked motor to Y axis.

Power on. BOOM! Smoke and flying parts!

Now the Y AXIS is toast after 2 weeks of turning it on showing my neightbor and GF that what I have built works and waiting 2 weeks to get the replacement A soldered in.

I am angry and upset.

See pics HERE:

http://ozarkmark.smugmug.com/gallery/3751789

[OzarkCNC]

Gave up on 4AUPC board and sold it.

Ordered new HCNCPRO kit from HobbyCNC. Dave gave me a good deal.

Maybe I can get it together without setting it on fire.

Still have to put up the DIY transformer 5V tap and the pic of my chrome handrails that will be my linearslides.

I need to mic them to see if I can use bearing blocks or will still have to use skate bearings.

Off to Home D. to return a thermostat and look around some more.

I found quite a bit of stuff on the FASTENAL site, bit it is a bit higher priced. I do have a local fastenal, so maybe I can get a better deal on some fasteners or spacers.

Thats all for now.

[turmite]

Ozark I'm sorry you have had problems, but I promise you the end result is worth the effort.

Mike

[OzarkCNC]

HobbyCNC PRO board arrived today.

Started assembly.

Taking extra time to make sure everything is PERFECT before I apply power to this one.

Will provide detailed pictures later.

[OzarkCNC]

I finally got my computer inside and gave it a quick look.

It seems to be mostly smoke damaged with only slight melting of the front of the case and the CDROM eject button.

http://ozarkmark.smugmug.com/gallery/3832950#221666893

Here is a pic of the Stainless/Chrome handrails that I will be using for my Linear slides.

http://ozarkmark.smugmug.com/gallery...221668151-M-LB

Bought some stainless 5/16" x 1 1/4" bolts & nuts for the skate bearings. I also bought some M11 washers to use as spacers. I'm lucky to have a Fastenal in my town. Spent under $10.

They are higher than boltdepot.com, but they are close and no waiting.

Hopefully the weather will be nice and I can work a bit more. Or I should say START outside.

If I can get to bed before daylight, that is...