Search found 132 matches

by aldenhart
Tue Apr 07, 2015 11:47 pm
Forum: Software - CAD, CAM, Workflow Help
Topic: Changing feed rate on the fly
Replies: 9
Views: 2129

Re: Changing feed rate on the fly

We've been laying the groundwork for feedrate override in TinyG for a while. There are a couple of things to go, but I think we are pretty close now. --Alden
by aldenhart
Tue Oct 21, 2014 11:10 am
Forum: tinyG
Topic: Does TinyG support G53
Replies: 20
Views: 3081

Re: Does TinyG support G53

We do try to check in pretty often. The whole conversation so far looks correct. Except that TinyG does not currently support G10 L20. That's on the list. You need to use G10 L2. ALso a clarification on the use of G28.3. It can be used as described above, but it's also for machines that have infinit...
by aldenhart
Sat Sep 27, 2014 1:22 am
Forum: tinyG
Topic: 2in Cyl becomes Square, 10in Cyl becomes Decagon.
Replies: 4
Views: 931

Re: 2in Cyl becomes Square, 10in Cyl becomes Decagon.

What is your setting for chordal tolerance $ct? It should be about 0.1mm
by aldenhart
Fri Aug 29, 2014 1:31 pm
Forum: tinyG
Topic: Limit Switch Debugging.
Replies: 6
Views: 1819

Re: Limit Switch Debugging.

Glad you worked out the issues. The point on not doubling up is that each switch is detected independently and reacted to independently. This helps in homing, but it's also important to know how to recover from the case where the machine is parked on a switch at the start of homing. It needs to know...
by aldenhart
Thu Aug 28, 2014 2:01 am
Forum: tinyG
Topic: Limit Switch Debugging.
Replies: 6
Views: 1819

Re: Limit Switch Debugging.

here are some various steps to try in order: Try configuring the switches as homing only first. Run homing to make sure it works. Then try enabling them for limit, one at a time, and running a job with a spindle running. Most of the time it's spindle noise getting into the switch lines that cause th...
by aldenhart
Thu Aug 28, 2014 1:54 am
Forum: tinyG
Topic: TinyG Fan Control
Replies: 7
Views: 1471

Re: TinyG Fan Control

I like the case. Looks cool. let me know how it goes.
by aldenhart
Wed Aug 27, 2014 4:57 am
Forum: tinyG
Topic: tinyG Settings
Replies: 18
Views: 13288

Re: tinyG Settings

One further note: The travel-per-revolution ($1tr, $2tr...)for Shapeoko is 40.0. The pulleys are different than the Shapeoko1's that were discussed when the previous entries were written.

The GT2 pulley has 20 teeth at 2mm spacings. Hence 40 mm per revolution.
by aldenhart
Wed Aug 27, 2014 4:55 am
Forum: tinyG
Topic: TinyG Fan Control
Replies: 7
Views: 1471

Re: TinyG Fan Control

You probably don't need a fan that's so powerful. The stepper drivers need light cooling - and only if you are drawing more than about 2 amps. This usually means NEMA23s - Most NEMA17s don't draw this much. The Xmega should not need any cooling. I'd remove the heatsinks (at least temporarily) and pu...
by aldenhart
Wed Aug 27, 2014 4:47 am
Forum: tinyG
Topic: Homing issue
Replies: 1
Views: 577

Re: Homing issue

I'm not sure what commands jCNC is issuing, but if you can send individual Gcode commands directly to the board after homing it should work. Sounds like homing is set up correctly. You can also use Coolterm as a command line to diagnose things. There's nothing between it and the board. Issue a G28.s...
by aldenhart
Tue Aug 12, 2014 4:47 pm
Forum: tinyG
Topic: No more torque after pulley change
Replies: 6
Views: 931

Re: No more torque after pulley change

Thanks for posting the settings. If you can post the Gcode you were running that would be helpful. Also, if you have any idea where in the file the problem occurs (ideally a line number) that would also be helpful. Is the problem repeatable to a specific location in the file, or does it occur sporad...