jaco
New Member
Posts: 25 
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Post by jaco on Mar 9, 2017 20:36:12 GMT
Hi,
I'm new to cnc milling. I build the millright with the 400watt spindle. My first project is running now. It is a small PCB circuit. I can see the the PCB board is not 100% level. The design was done in eagle with the pcb-gcode add-on.
Does anybody know how the autoleveler in grbl works.
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Post by mrbigj on Mar 9, 2017 21:21:20 GMT
Hi, I'm new to cnc milling. I build the millright with the 400watt spindle. My first project is running now. It is a small PCB circuit. I can see the the PCB board is not 100% level. The design was done in eagle with the pcb-gcode add-on. Does anybody know how the autoleveler in grbl works. Welcome, congrats on building the machine and getting it running! Unfortunately, the admin will have to chime in here, I don't believe we have a function available to us to "auto level", though I'm not certain. Jason |
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Post by kevin on Mar 10, 2017 2:37:02 GMT
Welcome to the forum Jaco and congrats on your build. Starting out with PCB's is ambitious for sure. I'm like Mrbig, i'm not aware of an autolever in grbl. Derek the admin here can say for sure. Did you zero your z axis before the cut, and if so how?
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Post by Derek the Admin on Mar 10, 2017 4:51:56 GMT
We are using grbl 0.9f, but 0.9g has some probe features incorporated under G38.2 I believe. 1.x is even more rich in this respect I think. We will eventually make that the standard, but there are other focuses at the moment. The below link is something you are going to love. This guy wrote a program to height map your PCB and modify your g code for error. I haven't watched this video in a long time, but I think he walks you through everything including the firmware reflash. The guy has produced a genius work for the PCB maker community. martin2250.blogspot.com/2014/12/grbl-height-probing-tutorial.htmlYou can also take more steps to just flatten things out mechanically. This includes things like double sided tape. |
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jaco
New Member
Posts: 25
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Post by jaco on Mar 10, 2017 7:33:30 GMT
Tnx everyone for advice.
Yes Kevin. I did zero the Z axis. I used a multimeter to check that the mill bit just touch the PCB.
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Post by Derek the Admin on Mar 10, 2017 17:56:59 GMT
No problem. Be sure to share what you make.
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Post by aforww on Mar 10, 2017 23:50:06 GMT
I've been going back and forth with Will on the touch plate and leveling functionality of UGS and GRBL. It's really close. The auto leveling in GRBL is good you just have software that takes advantage of it efficiently. At least that's what I gathered in my research as I haven't actually used it.
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jaco
New Member
Posts: 25
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Post by jaco on Mar 15, 2017 15:14:01 GMT
  I milled some PCBs for my digital weather station. This was done without the GRBL autolevel function and with weak milling bits |
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jaco
New Member
Posts: 25
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Post by jaco on Mar 15, 2017 18:58:43 GMT
 PCB ENGRAVING
Better results. I used improved mill bits. The kapton tape should function as a solder musk |
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Post by mp4doggie on Mar 16, 2017 1:22:56 GMT
Awesome . Im really loving the projects on this site. I am not a pcb guy but just the fact that this is possible is great. Great job by the way
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Post by mrbigj on Mar 16, 2017 1:28:55 GMT
PCB ENGRAVING
Better results. I used improved mill bits. The kapton tape should function as a solder musk I have too many projects as it is, but I can't wait to try this... I work with Arduino quite a bit, and I'm interested in these possibilities! Great job! J |
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Post by aforww on Mar 16, 2017 1:48:51 GMT
On my list too. I've been learning some more on PCB design to make a breakout board for the Arduino to allow for more functionality.
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jaco
New Member
Posts: 25
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Post by jaco on May 6, 2017 20:42:18 GMT
I managed to get the autoleveling of grbl to work.
The cable connection is:
Connect one probe to the SCL port of the CNC shield and your pcb that you want to mill.
Connect another probe to GND and with crock teeth to your mill. Do not switch the connections around.
I used the chilipeppr.com web application to generate modivied (leveled gcode) and mill my board
Chilipeppr have nice youtube videos. Great app.
I will send pics soon.
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Post by Derek the Admin on May 7, 2017 1:42:52 GMT
Great job jaco. Also, for general info you can also use that for general probing via G38.2 for setting the Z zero if you want if you use a spring loaded probe base.
Looking forward to your pics!
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Post by markwisniowski on May 8, 2017 4:05:28 GMT
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