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Messages - markus

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Grbl Controller / Re: start from anywhere in a gcode file?
« on: March 19, 2017, 11:51:25 PM »
such a pity you cant say 'start from line number' in the gui, maybe a develoment opportunity out there? 😆

Grbl Controller / start from anywhere in a gcode file?
« on: March 19, 2017, 01:55:05 AM »
does anyone know if it is possible to skip to a point in a gcode file and start burning/cutting from there? winblows did a security update and restart 80% of they way through a job when i wasn't watching. I can find home easily enough, and i want to start from where it stopped, rather than go over burnt ground 🤣

i realise that i can just edit the file, but would rather not, a last resort perhaps?


Trouble Shooting / Re: github repository for laseraxe firmware
« on: March 06, 2017, 12:23:54 AM »
new laseraxe nano arrived today. first did hex dump of the nano in there, then replaced nano with laseraxe one, another hex dump, then realise can't do byte comparison between grbl 1.1 and laseraxe grbl 0.8 😖 doh!

now to troubleshoot y axis probs. yep still got them, keeps moving while spindle is connected and powered on, plenty of fiddling with parameters, feed speed, spindle speed ect etc etc, no luck.

next: electronics.

swap y axis driver board for one of the dozen i got lying around in my arduino kits (i figured thats an obvious goto right now 🙂)


who knew? bad driver board. now  can go back and work on that grbl 1.1 version 😁

at least i now have a laseraxe hex file to store away for a rainy day experiment

Trouble Shooting / Re: github repository for laseraxe firmware
« on: February 12, 2017, 10:21:07 PM »
marginal design flaws are what makes life, and hobbies, interesting   :D

nottingham82: all motors working, just y axis keeps turning, at different rates, but only when a constant load is attached to laser/spindle out (my laser is actually on) Waiting till a fresh laseraxe nano gets here so I can rule out a firmware problem.

Trouble Shooting / Re: github repository for laseraxe firmware
« on: February 12, 2017, 01:29:21 AM »
Still having problems with a wandering y axis, seems it wants to keep going. when it should stop. I have noted that it only seems to do it when spindle is on AND laser module or spindle is attached and operating. It wasn't doing that before the github firmware. I have a new nano coming from laseraxe, will be doing dumps and byte comparison on both to find out if it is software, or i need a new board, motor, or something else 🤔

I think that laseraxe has completely different pin assignments, (seems obvious since generic grbl doesn't work) including some other interoperability, and perhaps the repo just hasn't quite picked it up yet

Trouble Shooting / Re: github repository for laseraxe firmware
« on: February 10, 2017, 04:49:47 PM »
aha, makes sense, woodpecker did not work, the machine acted in much the same way as a vanilla grbl (only the x axis moved, and only in one direction no matter what)  so i must have a later board.

now i just got to work out if my wandering y axis is software or hardware, I'm hoping its just the controller overheating, easy fix then...

Trouble Shooting / Re: github repository for laseraxe firmware
« on: February 09, 2017, 10:29:08 PM »
yes, but zax removed to from his latest version of t2 leaving people like me, whom it does work for, out in the cold. i just thought it would be nice for people to find it and try it, if it works for them too, its all well and good

Trouble Shooting / github repository for laseraxe firmware
« on: February 09, 2017, 08:26:09 PM »
good news I hope, found this repository for my laseraxe. I'm still waiting on the nano form laseraxe themselves and thought got nothing to lose - give it a shot. I can confirm it works (for me anyway)

shout out to the author :-D

Trouble Shooting / Re: another laseraxe woe
« on: January 30, 2017, 07:07:32 PM »
They are on Holiday for the next week and a half.

dang, thought so - chinese new year perhaps, festival goes on for 15 days or such after the day 🙁

Trouble Shooting / another laseraxe woe
« on: January 29, 2017, 08:57:14 PM »
Hi all,
bought a cnc mill/laser from aliexpress and it arrived sans assembly/operating instructions. First thing I did after ensuring it worked to my satisfaction was flash to 1.1 grbl (the board came with 0.8c). Bad move. Turns out I have a laseraxe board. These things are customised, regardless of where you get the nano from, or whats on the nano, it won't work without the genuine laseraxe firmware. Apparently it is customised grbl and pin assignments are different. laseraxe's website is not responsive, perhaps on holiday? still I have ordered another Nano from them but was wondering, while I wait - does anybody have a laseraxe hex dump I could "borrow" till the new one gets here? (there are whispers that they have upped the grbl version)

Thanks for any help :)

Grbl Controller / Re: jtech grbl source code?
« on: October 10, 2016, 11:27:44 PM »
J-tech will not give it up.


I thought grbl was open source, and jtech was just a branch. if j-tech is based on grbl and uses much of the code, aren't they breaking the rules by not releasing it?

thanks for the info, now i know where to look, will have to build and test the new version 😁. I was so disapponted yesterday when i engraved a nice grey scale photo and went to cut a circle around it, horrible waste of material and time :(

Grbl Controller / jtech grbl source code?
« on: October 10, 2016, 09:31:03 PM »
anyone know where i can get hold of the source code for the jtech grbl branch? (cant find it in github). The current grbl branch (9j) can do arcs and circles properly, so I want to see if i can merge the two.

The current grbl branch will not work with my ttl board, something about the wrong frequency - just incase you ask  :)

Trouble Shooting / Re: removing old driver board, advice needed
« on: October 09, 2016, 03:16:43 AM »
i want to keep the heatsinks for other needs, so i'll be trying to pull the diodes out, if they survive that... ( I wasn't aware it was possible to recover and reuse a burnt out diode)

Trouble Shooting / ttl board connection warning?
« on: October 06, 2016, 02:00:09 AM »
hi all. Just thought I might let you know of a possible issue when wiring in a ttl board to the eleks maker board. There are instruction floating around the suggest the laser output of the eleks maker is connected to the ttl input of the ttl board. for me this is very very wrong. I discovered that in doing this, the laser cannot be turned of and the ttl board was pumping 3.8A to the diode. needless to say that I lost two diodes before i ordered another one (i don't give up that easy) the new diode came with its own ttl board, so I happily wired it in, only to nearly lose that diode too. would turn off. so now to read up.

I have fixed the issue by doing what zax did, wire ttl+ to the pin under the nano and ttl- to a general gnd, the laser now works perfectly, with pwm 😁. So I would suggest tat you not use the laser output of your eleks, but do what zax did, it'll save you money.

my board is an eleks maker 7, maybe thats what the difference is

Trouble Shooting / Re: removing old driver board, advice needed
« on: September 24, 2016, 11:54:53 PM »
definitely not impressed, burned out both my laser diodes with this ttl board - see pic, laser would not turn off, and it turns out that as soon as you apply power, it punches 3.8+ amps straight to the diode, regardless of any ttl control, and the current adjustment makes nooo difference to the supply at the diode.

i had an identical board from ali express, same thing happened, and same measurements - board design issue?

just to make sure the diode is dead, i reconnected the old driver board and got zip, yes there was current and voltage at the output of the original board.

going back to bg and get the 2w with ttl board ready to go

not happy jan

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