I need help with building a LED flashlight Answered
I have been building this 9volt LED flashlight but I used this LED resistor calculator and it came up with a diffrent resistor then was noted in the instructable, I bought these two leds at radio shack and a 150-Ohm 1/2 watt 5% tolerance resistor (Brown Green Brown Gold). The LED lights light up but they are not bright like a flashlight and can only be seen in the dark if you put your hand up close. Im wondering where I went wrong? This is my first time working with LEDs, Maybe the radioshack LED's are just crappy? Or do you think I got the wrong resistor?