Tweezing Diodes
Surface mount diodes are simple enough — all you need to do is make sure you have the anode and cathode in the right order when you place them on the pad when you solder them. These SMD diodes come in industry-standard packages, but do you think there’s an industry-standard way of marking the cathode? Nope, not by a long shot. To solve the problem of figuring out which way the electrons go through his LEDs, [Jesus] built a simple pair of LED tweezers.
The purpose of these tweezers is to figure out which way is up on a LED. …read more
