Search found 31 matches

by JimHung
Thu Jan 30, 2014 9:52 am
Forum: Lounge
Topic: Anyone know a cheap UK-based supplier of Aluminium profile?
Replies: 2
Views: 744

Anyone know a cheap UK-based supplier of Aluminium profile?

Hey everyone, I'm looking to build a non-ShapeOko project for a work project - essentially I'm thinking of constructing a 50cm x 30cm x 30cm aluminium frame for part of an RF isolation box (Faraday cage). I was thinking of just building it out of aluminium profile (t-slotted or not, I'm not fussy) a...
by JimHung
Wed Aug 14, 2013 6:32 am
Forum: Electronics
Topic: Buildlog Stepper v3 (Reactive Substances) Blown Driver
Replies: 5
Views: 1098

Re: Buildlog Stepper v3 (Reactive Substances) Blown Driver

Excellent - using your approach I've been able to properly adjust the pots and successfully control the 3 axis' using Universal GCode Sender, thanks for your help! I think the fact I had the trimpots turned all the way counter-clockwise explains why I was reading 0 volts - with a little turn I start...
by JimHung
Tue Aug 13, 2013 4:15 pm
Forum: Electronics
Topic: Buildlog Stepper v3 (Reactive Substances) Blown Driver
Replies: 5
Views: 1098

Re: Buildlog Stepper v3 (Reactive Substances) Blown Driver

Thanks for the info, it's much appreciated! I think you are probably right, which is a little annoying as I think it's was the product of an attempt to NOT turn it up to eleven in the first place - I thought I had turned them all down to 0, and was planning to slowly turn them up to the required vol...
by JimHung
Tue Aug 13, 2013 7:52 am
Forum: Electronics
Topic: Buildlog Stepper v3 (Reactive Substances) Blown Driver
Replies: 5
Views: 1098

Buildlog Stepper v3 (Reactive Substances) Blown Driver

Hey guys, I recently decided to replace my GRBLshield v3 stack with the Buildlog v3 + Polulu A4988 Black Edition from Reactive Substances. I followed the build videos on YouTube carefully and got to the stage in the instructions (http://www.reactivesubstance.com/step.html) where you trim the pots to...
by JimHung
Wed Jan 30, 2013 5:43 am
Forum: Discussion
Topic: Prototype Calibration Pattern (with G-Code)
Replies: 25
Views: 25008

Re: Prototype Calibration Pattern (with G-Code)

Hey Kurt, Thanks for trying my pattern - i havent had much time to improve it, it definitely needs some work on optimization. Im going to redo it by hand with some of the suggestions people have given soon (i hope). As for your problem, thats a little strange - it works fine on my 2nd batch Shapeoko...
by JimHung
Fri Sep 28, 2012 11:41 pm
Forum: Electronics
Topic: Dual Motors of one driver.
Replies: 27
Views: 9588

Re: Dual Motors of one driver.

Thanks for posting this - very helpful. I should probably point out that the steppers currently for sale at Inventables aren't the same steps per revolution as what came with the kit. That was somewhat annoying to find. I'm very glad you posted this, I was all set to try this mod with a full set of...
by JimHung
Mon Sep 24, 2012 6:27 am
Forum: Other - (etchers, drag knifes, lasers)
Topic: Vinyl Cutting Blade
Replies: 37
Views: 19612

Re: Vinyl Cutting Blade

This is really interesting reading - I'd like to give vinyl/paper cutting a go with my ShapeOko at some point in the future. Does anyone know of a CAM program that will generate GRBL-friendly G-Code with tangential emulation/support for drag knife offsets?

Jim
by JimHung
Thu Sep 20, 2012 6:18 pm
Forum: Electronics
Topic: Inventables wiring
Replies: 9
Views: 2694

Re: Inventables wiring

Mine were too short too, but I also don't feel that comfortable with the reference design since it seems to subject the motor wires to an undue amount of mechanical movement - I don't feel good about the long term health of the wires (particularly on the Y-axis in the reference diagram) when being f...
by JimHung
Wed Sep 19, 2012 7:33 pm
Forum: Electronics
Topic: Inventables wiring
Replies: 9
Views: 2694

Re: Inventables wiring

Hey loopingz, My Inventables kit was the same - the motor wires were way too short for the wiki instructions to be usable. I solved the problem by using a combination of Molex power connectors (like you get on hard drives and computer power supplies) and the supplied sheathed cable (apologies for th...
by JimHung
Mon Sep 17, 2012 5:13 pm
Forum: Discussion
Topic: Prototype Calibration Pattern (with G-Code)
Replies: 25
Views: 25008

Re: Prototype Calibration Pattern (with G-Code)

Hey LineKernel, If you go to Settings > Preferences, then click the GCode tab, there is a setting called 'Safety Height'. This is the height that that your Z axis will raise to when its travelling - by default this is set to 25mm. Change this to something smaller if you want to cut down on Z-Axis mo...