More ideas from Robit
How to make cheap but very powerful LED bulbs

It's been almost a year since I started to "LEDify" my home, with results more or less encouraging, but only an accident made ​​me find the.

Picture of Choosing The Resistor To Use With LEDs

This question gets asked every day in Answers and the Forums: What resistor do I use with my LEDs?

はぴねす びい5

はぴねす びい5