Comments for Kris Arnold

Comment on Arduino and the Official Motor Shield R3 by Richard

Richard — Wed, 18 Apr 2012 13:12:24 +0000

Thanks Kris! I think this is the best example/sample program/page out there for the new motor shield (R3). I made the suggested edit, and changed some parameters for my Nema 17 motor and it runs great at 200-300 rpms, but no faster (12v). I was wondering if the speed is voltage and/or program dependent? I’d like to get 600 to 1000 rpms for my latest project (speed is more important then precision since I am opening some small doors). And suggestions would be appreciated.

Comment on Installing Mapnik on CentOS 5 by Raul

Raul — Tue, 10 Apr 2012 11:10:03 +0000

After adding
/usr/local/lib64
/usr/local/lib
to /etc/ld.so.conf.d/local.conf, you should execute
/sbin/ldconfig

Comment on Arduino and the Official Motor Shield R3 by ajalics

ajalics — Thu, 01 Mar 2012 03:54:39 +0000

// Include the Stepper Library
#include

Comment on Arduino and the Official Motor Shield R3 by ajalics

ajalics — Thu, 01 Mar 2012 03:54:09 +0000

// Include the Stepper Library
#include

should be

// Include the Stepper Library
#include <>

Comment on Arduino and the Official Motor Shield R3 by ajalics

ajalics — Thu, 01 Mar 2012 03:53:21 +0000

This is very good information about using the “official” R3 motor shield you can get from radioshack. This should be better documented.

Problem with the code included above:
// Include the Stepper Library
#include

Should be:
// Include the Stepper Library
#include

Comment on Arduino and the Official Motor Shield R3 by Jim Craig

Jim Craig — Sat, 18 Feb 2012 20:17:01 +0000

Thank you! I have been looking all over for this. I wish I’d stopped here first.

I have quite a few Berger RDM57 steppers from old slide projectors and thought they’d be ideal. It took some searching, experimentation and finally just looking at what was before me to figure out which wires were A+, A-, etc.

Now, do you know anything about the white and orange pin headers on the top of the board? That could be useful as well.

Comment on NY Times by doug thompson

doug thompson — Tue, 31 Jan 2012 15:33:51 +0000

Very nice! Looks like you are doing great! Getting your pics published and all!

Comment on New Orleans in large format by doug thompson

doug thompson — Tue, 31 Jan 2012 15:31:36 +0000

Awesome pictures!!

Comment on Adding info windows to map clusters with google maps api v3 by how to find the markers in the individual clusters in a marker cluster object in google maps api v3? | appsgoogleplus.com

Fri, 09 Sep 2011 00:40:23 +0000

[...] I followed the tutorial here to add an inforwindow to the individual clusters of markercluster at any zoom level. http://krisarnold.com/2010/10/15/adding-info-windows-to-map-clusters-with-google-maps-api-v3/ [...]

Comment on Abandoned USA by Hillary J

Hillary J — Sun, 12 Jun 2011 20:37:11 +0000

Just wanted to say that I have looked through all of your posts on the Abandoned USA site, and they are all wonderful!! You are an amazing photographer, with mad skills! I am also VERY much into urban exploration, especially abandoned buildings,etc. It is absolutely fascinating. Your pics are very inspiring! Keep up the good work!!