$0.02 SMD LED tester

Soldering a lot of SMD leds? Never sure what polarity the smd led has? Make this simple SMD LED tester.

Take a look in your used battery box and search for a 9V PP3 battery. Solder any resistor with a value between 470 ohms and 10K onto the battery terminals.

Simply press the two wires onto the led and see if it lights up.

Did you like this post? Please give it a thumbs up by sharing it on your social network. Thanks!

Leave a Reply

Your email address will not be published. Required fields are marked *