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gothdragon,

to start a new thread one needs to go to forums then select the appropriate category; under the specific forums/category is a 'start new tread' button near the top. this thread is in...

telah,

I am running x, y axis at 100%, fast decay, full step on these motors
1.8Deg. MINEBEA STEP MOTOR-MPJA, Inc.
and running z axis at 75%, fast decay, full step
and 4th axis left unused...

telah,

circuitz found shorted traces on his 3-axis board that may be contributing to the power load on the regulator; see http://www.cnczone.com/forums/820437-post17.htmls

also, the regulators...

leaveme,

Your comment about there being some activity on the line got me thinking about LPT history I read somewhere ( like here http://www.beyondlogic.org/spp/parallel.htm ).

one final thing...

leaveme,

Glad you got your machine running.

I dont know how the LPT would have been damaged; as you say, the on-controller 74HC14 should block transients from the driver IC (unless the driver...

leaveme,

if you power everything off and then swap motors between driver chips by moving the green connectors around and then try to jog, does the problem follow the x axis motor or the x axis...

lilimike,

Your A, B look good.
And you are correct on C that the board does not have the error I described; actually my board does not the error I described. And so I must [embarrased] admit my...

Aaron,

For me, buffering the CLOCK (eg STEP) line for each driver IC fixed the missing step issues. But before I committed to change the entire board, I did try out the buffer fix on a single...

circuitz,

Thanks for the additional information & investigation.

I mistakenly assumed the SOT23 device on the backside behind the relay was a relay coil back emf protection diode; but it is...

brutusgraphics,

MY TB6560 board, as shown in the previous pictures, includes the circuitry that a breakout-board would provide; so the answer is "no you dont need a [separate] breakout-board" if...

villamany,

The 4 leaded resistors that can be seen on "cnr_bot.jpg" were my attempt to fix the controller by changing the STEP/CLOCK pull-up from 4.7k to 1.0k. I did this by leaving the 4.7k in...

villamany,

The capacitor on OSC does set the step pulse time as you indicate. I was not able to determine the value of that capicitor on MY board and I could not get my half-working oscilliscope...

I purchased a 4-axis controller base on the Toshiba TB6560 Driver IC from a Hong Kong vendor thru e.b.a.y. Although the board could be made to function by setting all parameters to low / relaxed /...

Jeff, Surplus Center has #25 chain and many sprockets to choose from at what seems like decent pricing. I bought a 10 ft length of chain, some links, and a half dozen of sprockets (some with bore...

Bill,

Found the spec for your power supply at http://www.antekinc.com/details.php?p=282
Is this the correct supply ?

If it is, you dont HAVE to connect the AC wire earth ground but it is good...