Author Topic: IR pen I built for school  (Read 3999 times)

Offline jameslao

  • *
  • Posts: 3
  • Karma: +0/-0
    • View Profile
on: February 17, 2008, 11:36:31 AM
I built an interactive whiteboard as a school project. The pen design I used is pretty standard, but I cut out barrel of an old Expo whiteboard marker to fit everything inside. For the momentary switch, I ripped out the reset button on an old computer we had in storage. :)

It cost around $2 for the IR LED and AA battery holder. The other parts I found laying around.

Here's the project page for it if you're interested: