A DIY CNC pendant made by Bob Davis.  He wrote a post on his blog detailing it’s assembly:

Last night I finished building my DIY CNC pendant and tested it out.  I still need to add a manual jogger to it someday.  It is made out of an old Zenith TV remote control.  The key is to have three position toggle switches.  I have a lot of them laying around that were left over from another project.  You can build this for about $25 or for free in my case because I used parts that I had laying around.  It will be in my next book “Arduino CNC Projects”.

Via Hacked Gadgets.

Check out the video after the break.