Clip-On

The clip is used to change from high to low setting. The switch on the battery case is used to turn on and off the unit. Other colors like amber are also useful to help keep bugs away at night.


This next picture shows a clip on a hat task light that works extremely well. It can last up to 24 hrs of on time at 90 ma. 6 LEDs running at about 75% power with 40 to 90 degrees LEDs work best for tasks with-in arms reach. Most commercial units have too small a spot size to be usefully at close range. They can be used when walking or longer distances. Most commercial units have too small a battery to last long. This unit has a wide angle of light with more intensity and bigger batteries.


The clip was salvaged from a small clip-on LED "astro lite" bought at a 99 cent store. It was cut down to size with a hack saw. A pc board with holes in it was cut to size and 6 white LEDs were wired in parallel as per the diagram and picture above. 5 min epoxy was used to hold the LEDs in place. Silicon rubber gasket sealer was used to hold the resistor or x-mass tree bulb and charging leads in place.

This report should give one a good start on what can be made to assist survival in a primitive environment in terms of LED lighting.

Offered by Mike.