My spare parts box is overflowing with LEDs, something that I often find and even more often wonder why I continue to pick them up, considering I have no immediate use for them. I guess LEDs are always a useful thing to have around, just in case. With so many LEDs I needed a way to test them. It's cumbersome having to hold something to a AA or AAA battery, and 9 volts will almost certainly burn the LED out within seconds, so what is a man to do to make sure he preserves the LEDs but also makes sure they work?
The answer to that came in the form of some weird little contraption I found at the outlet store. I'm completely unsure of what this thing originally was but I found it almost as you see it, only needing some slight modifications. The LED was originally soldered to the resistor and straight to the battery post, which I changed out for a terminal for easy LED placement and removal.
It uses three small, watch style batteries, it already has an on/off switch and a resistor, so it was only a matter of adding the connecting terminal. After an extremely easy swap out the LED tester was ready to test LEDs of all shapes, sizes and colors.
|Yep, this LED works.|