Led driver made of two componets LM317 regulator and one resistor,value of resistor is calculated by formula R=1.25/current you get the resistance of resistor for example in video I use 1.5ohms 2resistor in parralel each one is 3 ohms.
Watch the video how to make your own led driver
Nice one
<p>Thanks for sharing this simple driver. It has really helped!</p>
<p>how u given the connections i cant see turn it back.</p>
<p>An extended curcuit with current adjustment, reverse-voltage protection can be found in this post: </p><p><a href="http://www.langeder.org/homemade-laser-driver-with-lm317/" rel="nofollow">www.langeder.org/homemade-laser-driver-with-lm317/</a></p><p>take care</p>
Resistors in parallel don't add up. Only series resistors add together. right now you are using an equivalent resistance of .75 ohms.
In fact he is using two 3 Ohms resistors put in parallel, which means an equivalent resistance of 1.5 Ohms.
Yeah I realized that later. The way I read it and the way it was pictured threw me off. I had a fail moment but he is indeed correct.
Great video, I found it very helpful thank you. <br>What song is playing?

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Bio: My name is marjancho and I love electronics,makeing gadgets,hack and pranks.
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