Search found 410 matches

by bharbour
Tue Aug 09, 2016 12:59 pm
Forum: Member Projects
Topic: First Project on the XXL
Replies: 6
Views: 1596

Re: First Project on the XXL

Cool project!
by bharbour
Mon Aug 08, 2016 3:26 pm
Forum: GRBL
Topic: GRBL Settings
Replies: 5
Views: 1068

Re: GRBL Settings

K...that makes sense. I'll likely have to run the machine to find out when it starts loosing steps. My stepper motors want to see 70v, but I'm only running them at 48v and I have a feeling that 400 to 500 rpm is likely going to be max before loosing steps. Acceleration is limited by your motor torqu...
by bharbour
Mon Aug 08, 2016 2:47 pm
Forum: GRBL
Topic: GRBL Settings
Replies: 5
Views: 1068

Re: GRBL Settings

I'm asking what would be a good starting point on setting accel. I figured that accel would be limited by the max rpm my lead screw could take before whipping. But that rpm is way higher than I think my steppers could do without loosing steps. I figure that 200ipm (5080 mm/min) is a good start for m...
by bharbour
Sun Aug 07, 2016 11:27 am
Forum: GRBL
Topic: GRBL Settings
Replies: 5
Views: 1068

GRBL Settings

EDIT...I found the GRBL explanation, but how is accel calculated? I posted this on the CNCZone forum, but figured I may get a quicker reply here since most of the guys on the CNCZone forum are Mach 3 users. I'm setting the different parameters in GRBL (9j) and have a question about these setttings.....
by bharbour
Mon Jul 25, 2016 1:45 pm
Forum: Electronics
Topic: Question...pulse/rev on driver vs. steps/mm in GRBL
Replies: 2
Views: 1050

Re: Question...pulse/rev on driver vs. steps/mm in GRBL

Cool...I understand it now. Thanks!!! The pulses/rev is a way of representing microstepping. On that drive all switches off would equal 200 steps/revolution, if you set it up for microstepping you would need to multiply that factor by whatever your calculated steps/mm number is. I believe it also sh...
by bharbour
Sun Jul 24, 2016 3:41 pm
Forum: Electronics
Topic: Question...pulse/rev on driver vs. steps/mm in GRBL
Replies: 2
Views: 1050

Question...pulse/rev on driver vs. steps/mm in GRBL

I believe I have an understanding of setting the steps/mm in GRBL based on my lead screw type. My M542T drivers have a pulses/rev table silkscreened on the back. These pulses per rev can be set by dip switches on the M54T. What's the difference between the step/mm and pulses/rev...are they the same?...
by bharbour
Tue Jul 19, 2016 6:40 pm
Forum: Electronics
Topic: Hooking up Arduino Uno to discreet drivers
Replies: 2
Views: 497

Re: Hooking up Arduino Uno to discreet drivers

Thanks!!!!! I understand the Pulse and Dir hookups, but what about the enable out of the Arduino...is that used? Yes. Connect the enable inputs of all the drivers together, and hook them up to the enable output of the Arduino. And don't forget to connect GND! (You'd be surprised how often people for...
by bharbour
Tue Jul 19, 2016 2:55 pm
Forum: Discussion
Topic: Well...moving away from the Shapeoko 2...
Replies: 20
Views: 2840

Re: Well...moving away from the Shapeoko 2...

Ahhhh...thanks!!!
cvoinescu wrote:Good stuff!

Fixed the videos for you. Rather than the shortened URL [­youtube]https://youtu.be/...[­/youtube], use the full URL [­youtube]https://www.youtube.com/watch?v=...[­/youtube].
by bharbour
Tue Jul 19, 2016 1:42 pm
Forum: Discussion
Topic: Well...moving away from the Shapeoko 2...
Replies: 20
Views: 2840

Re: Well...moving away from the Shapeoko 2...

Have made some progress. Hopefully the Youtube vids below will work... The first is the rolling chassis. I'm not all that happy with the table I built, but it works for now. I'm going to learn how to weld and build a steel table. https://www.youtube.com/watch?v=q2R9mKH7SBU The second is the X workin...
by bharbour
Tue Jul 19, 2016 1:12 pm
Forum: Electronics
Topic: Hooking up Arduino Uno to discreet drivers
Replies: 2
Views: 497

Hooking up Arduino Uno to discreet drivers

I'm going to be hooking up my Uno to discreet M542T drivers. I understand the Pulse and Dir hookups, but what about the enable out of the Arduino...is that used?

Tnx,