Comments for Marginally Clever

Comment on Five steps to building a better robot by Building a Delta Robot: 3D model version 2 | Marginally Clever

Building a Delta Robot: 3D model version 2 | Marginally Clever — Sun, 05 Feb 2012 22:32:08 +0000

[...] …I’ve defined success [...]

Comment on Building a Delta Robot Part 1: Defining Success by Delta Robot Forward/Inverse Kinematics Calculations | Marginally Clever

Delta Robot Forward/Inverse Kinematics Calculations | Marginally Clever — Wed, 01 Feb 2012 20:33:41 +0000

[...] it’s not very accurate. For that reason I’ve aimed for much greater precision than success calls for and I’m going to cross my fingers that it works… or until someone tells me [...]

Comment on Building a Delta Robot Part 1: Defining Success by admin

admin — Tue, 31 Jan 2012 03:17:49 +0000

Thanks, Bob. I’ll be sure to add that in. I have it in the latest draft of my model using some mechanical contact switches. I can’t place them precisely until I solve the forward kinematics problem and finalize the working dimensions.

Hold on – isn’t that issue #7?

Comment on Building a Delta Robot Part 1: Defining Success by Bob

Bob — Tue, 31 Jan 2012 03:13:05 +0000

Great article Dan, great example of the high-level planning required for complex projects. One thing you might consider in “repeatable accuracy” is how to recalibrate to (0,0,0) or some other known point. Without some recalibration mechanism your pen will become increasingly inaccurate over time. You might want to include an absolute reference point in your design. A common technique is to have microswitches that get pressed when the arm moves to an extreme position.

Comment on Hydraulics and mechanical engineers – Want to build a giant crab with me? by admin

admin — Fri, 20 Jan 2012 18:08:44 +0000

Awesome! How can you help? Right now I am trying to find CAD models of all the hydraulic parts.

Comment on Hydraulics and mechanical engineers – Want to build a giant crab with me? by claudio

claudio — Fri, 20 Jan 2012 05:24:33 +0000

I want to participate in your proyect, budy…

Comment on Controlling your Arduino through the Serial Monitor by admin

admin — Fri, 13 Jan 2012 11:21:17 +0000

Read up about Gcode. It looks a lot like G0 X122.014 Y18.007 Z6.074. So… it’s halfway between what you want and what I got, and the benefit is that lots of other programs (like CamBam and ReplicatorG) spit out Gcode. If you do it right you won’t have to write an app to translate Gcode to your system.
Good luck!

Comment on Controlling your Arduino through the Serial Monitor by Dewy721

Dewy721 — Fri, 13 Jan 2012 03:30:20 +0000

Thank you so much for this. I have been struggling to get my Arduino to accept x,y,z co-ordinates for several days now. Now if I could just figure out how parse your very elegant code into into something that accepts bare (machine generated) x,y,z,spindle-runState commands.

IE something like: 122.014,18.007,6.074,1

Your codeFu is quite strong. May only chance is to use ‘The Source Lucke, use the Source.’

Comment on Little things by Daniel Kauwe

Daniel Kauwe — Sun, 01 Jan 2012 10:20:19 +0000

Awesome!

Comment on Hydraulics and mechanical engineers – Want to build a giant crab with me? by admin

admin — Thu, 22 Sep 2011 00:45:24 +0000

that’s-a-lot-of-hyphens!

I had not really considered the insurance angle… I did plan to have e-stops on each leg and a fire extinguisher in the cab, as well as pressure sensors in the feet so it couldn’t smoosh someone. Also, a great big loudspeaker yelling “STAND BACK OR BE STOOD ON!”