[RMHCNC]

Just finishing up odds and ends and then it's time to build the drivers.
I plan on using TB 6560 IC's, I purchased the three access CNC board from China as most of us did and was not happy with any of the results. A ton of motor noise and plenty of skipped steps. I have five ICs on Hand and hope I can build at least three working drivers. Logic and motor power will be controlled with manual toggle switches in order to try and meet the data sheet information. Any help with the ICs would be greatly appreciated.
Pictures to come cant upload from my phone

[RMHCNC]

here they are

https://plus.google.com/u/0/10807651...711683?tab=wX#
https://plus.google.com/u/0/10807651...82110360225842

[RMHCNC]

lol that didnt work out.
if the link takes you to my google account look in the photos and you will see the pics

[RMHCNC]

I can't for the life of me get pictures in my post but all is well
The bed and all is ready, just working on the electronics. U have built and tested a prototype TB6560 driver and happy with the results so for. I turn on the logic power first count to 30 and then energize the motor voltage. No hiss or motor sound and smooth operation what I need now is a single sided BOB I can build that has full isolation.

[RMHCNC]

Well I decided to start a blog and uploading pictures is no longer a problem. follow the link if you want to see my progress Diy Desktop CNC

[RMHCNC]

here is a video of me testing the spindle controls
Diy Desktop CNC

[NSR_CIVIC]

How did you attach the chuck to that outrunner ?

Kevin.
Nsr customs.

[RMHCNC]

It is a ER11 colet with 8mm shaft, I removed the shaft from the outrunner and installed the ER11. It takes some minor mods like grooving the colet for the retainer clips but seems to work well

[NSR_CIVIC]

Do you have a link to where u got it? I got a few outrunners in my pit box I wannna mess with.

Kevin.
Nsr customs.

[RMHCNC]

I got it off eBay http://shop.mobileweb.ebay.com/searc...T+SHANK+COLLET
Just make sure your outrunner has an 8mm shaft and you should be good to go
P.S it does not come with the colet inserts so you will have to get a set of them also http://item.mobileweb.ebay.com/viewi...id=09306036266

[RMHCNC]

So! Any luck? @ N.S

[NSR_CIVIC]

I found a couple on there but I'm working on getting my spectralight running before I delve into another project.

Kevin.
Nsr customs.

[RMHCNC]

Cool,cool what's the issue your having getting going if any?

[NSR_CIVIC]

Crappy 3axis tb6560 driver board blew up. Working on swapping in my backup 4axis and hoping it doesn't end up the same way...

Kevin.
Nsr customs.

[RMHCNC]

My best advise is don't go past 24 vdc for the supply voltage and lots of air flow close to the regulators on the board, also power the fan that's on the heat sink by another source it will help with the skipped steps issue and set your TQ to 75%
I built my own driver boards and don't push them past 2.5 amps because that is their continues rating, 3.5 amps is peak and with 100% TQ settings your bound to blow more chips
I will gladly give you my pcb layout I found if you end up needing to salvage some of what your left with

[NSR_CIVIC]

yea i have a 24v 15a psu and i have removed the fan plug and added another 12v source for it. i also followed the mod on the fixed tb6560 thread by adding another 74hc14 after the optos and disabling the idle current mode circuit. im looking to source some 330pF caps for the internal clock and i added the diode to the spindle relay(not even using it yet).. lolz but i hadnt heard anything about current setting to 75%. im using stock spectralight round motors so ill try that.
i have looked into making new drivers. im trying to find a pcb layout for a break out board that i can drop the optos and other stuff onto so if i get more parts i can build drives. but i would still love to see your layouts.

[RMHCNC]

http://reprap.org/wiki/File:Heavy_Me..._schematic.pdf
http://reprap.org/wiki/File:Heavy_me...driver_PCB.pdf

The first link is for the drawing an the second is for the PCB
Diy Desktop CNC this is what it looks like when put together

[NSR_CIVIC]

I like that layout. Nice and neat. I may have to make a few of those.

Kevin.
Nsr customs.

[RMHCNC]

Yes I searched for countless hours and came across the board. Works well for me so far. I have yet to build the hole controller. I have the BOB, Drivers and pwm control done but want to build a power distribution board so each PCB has its own regulated power.

[RMHCNC]

So I have bin plugging away at this controller non stop for the past few days and have got alot done I completed all the PCB boards and mounted them to the base of the enclosure Ran most of the wiring and have powered it up for testing. Glad to say no puffs of smoke and all seems well I will post more as I go

Pics Diy Desktop CNC