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Thanks, I'll try and get some actual figures from the onscreen DROs. I have a parallel controller (actually I use 2 parallel ports so i also have MPG, buttons etc)

Hi.

Something I'm noticing on Mach3...

Sometimes when I pause a job mid cycle, then resume, the feedrate used is much slower than it was before (maybe about 30% speed at a guess). It generally...

Hi - not in particular. The main changes I made were adding all the control systems plus some hall-effect switches as the home switches for the three axes. Other than that it's more or less as...

very late reply....
No I'm using Eagle with the PCBgcode plugin, also the autoleveller application to get all the Z heights spot on across the board

Yes the GCode can certainly be edited - it's just a step that would be easy to forget and mean crashing a non-spinning spindle into the workpiece. I work at hobby level so each job is likely to be a...

When I start up Mach 3 (no GCode loaded), is there a way of specifying a default spindle speed? It defaults to zero.

My reasoning is I have some PCB track generation software (an Eagle plugin)...

Super-pleased with this
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PCB tracks cut with a 0.1mm engraving bit, much more straightforward (and cheaper) than messing around with etch chemicals and UV light. Holes also drilled with the...

Yes I'm also seeing this on some files - the pause/feed hold button doesn't do anything in some situations. The particular file I am using is using G82 for drilling canned cycles, I don't know if...

An update on this.....

I have a fairly comprehensive control panel which looks like this
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I have two parallel cards, I have annotated with the ports and pins which are used. All buttons...

The new bearings are good!

Here's some fresh output from the machine, it has made its own control panel! I did a similar thing on my original solsylva build where the machine engraved its own...

Right you all were, connecting the COM and RST terminals on the drive initiates an eStop, which causes the spindle to coast to a stop rather than ramp down under power - altogether much better! I'll...

Hi - I have another issue related to this. I built a physical control panel with indicator lamps, my thought process was I would be able to control them using the MacroPump function. I have two...

Thanks both - yes looking at the manual there are some terminals which can be configured as en eStop. I'll leave the mains on at all times as suggested. I'll look into whether I can use the terminals...

Hi,

I think I have created myself a weeeeeee problem.

One feature of the electronics I have put together is a relay on the mains input side of the VFD I have. For the relay to be on (and thus...

An update on this (sorry it has been a while)...

I have tried all sorts of approaches to sorting these bearings out and have given up in the end and purhcased some official HIWIN blocks which...

I got a model from OMIOCNC in the end. I actually bought a 'frame only' version since I already had the steppers, drivers and spindle. Plus I'm reasonably OK with the electronics side of things.
...

I need to rename my thread from 'Damaged Stepper Controller?', because I now know it isn't!

Interesting - that image shows the configuration I ended up using. So there's potentially a lot of mis-information about there on the Internet, since most schematics show the PUL and DIR inputs...

The 5V to the board is from a buck converter board, fed from same PSU as the steppers (about 40V). That's the board with the red LED on it just under that main PSUs. I'm also supplying an 'isolated'...

Thanks Steve

The buck converter supplying the 5V is rated at up to 4A, so there shouldn't be any issues there.

I can't find any online examples showing it setup as I now have it i.e. connecting...

I fixed it :) - and thanks for your tips!

A couple of findings....

The buck converter was only giving 4.3V to the Breakout Board, not the full 5v. I adjusted it back up to 5V. This actually...

Thanks again Gerry.

One thing did occur to me - on the drivers, I have the outputs from the BOB connected to the opto-couplers, which are in turn connected to 0v. So the BOB is sourcing the...

Thanks - bearing strip/rebuild in progress! TBH the machine was okay at lower speeds, it was the rapids which were the issue. It's just some extra reistance which was causing the motors to stall...

Yes this is the DIR signal with the pulse width set to 15. I wouldn't expect to see 5V ever (on a simple digital multimeter) unless the input is at 100% duty cycle. My understanding is the DIR signal...

You could call the same macro (301), check the state of the output and toggle it? So if it's on, turn it off and vice-versa. I think you could call the same macro from two separate buttons if you...

A little online research suggest this is a common problem with the chinese linear rails. i.e. the are supplied with protective gunk in them for shipping and proteciton, with the intention that they...

Thanks Gerry

I do have a breakout board, it's the DB25-1205 made by Longs/Wantai. This is being supplied with 5VDC.

The 1.87V I'm seeing at all three drives I assume to be an 'average' based...

1.87V - this is about the same voltage I see at the 'working' drive step and dir inputs. HIGH = about 1.87v. low = 0.3V. I have a simple GCODE program running that runs forward, then back on all...

PROBLEMS!!!

I get great performance out of the Z and X axes of the machine. However The Y axes (which is in the direction of the machine bed) is giving me grief.

Out of curiosity, I took up the...

Hi,

I recently completed (first stage) of the wiring of my CNC machine build, it has three Wantai DQ542MA drivers:

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I'm having issues with the Z-axis driver, like I don't get any...