irLEDMarker
Directions for making an IR LED Marker
You will need a rudimentary knowledge of soldering to complete this project.
Parts you will need:
1 dry erase marker
1 "N" size battery, Radio Shack part# 23-023
1 "N" size battery harness, Radio Shack part# 270-405
1 High-Output IR LED, Radio Shack part# 276-143
1 SPST momentary switch (normally open), Radio Shack part# 275-1571
Tools you will need:
1 soldering iron and some solder, the thinner the better
1 thin needle nose pliers
1 drill with bits
1 diagonal cut pliers
Fabrication:
· Remove the plug on the end of the dry erase marker
· Take out ink sponge and tip of marker
· Drill hole in side of marker where momentary switch will protrude
· Solder LED, battery cage and momentary switch into a loop
· Slide the loop into the marker body with the LED leading
· Use thin needle nose pliers to grab the switch and pull it into position