The life of the LED before failure really depends on how overpowered it is. If it is very slightly overpowered then it could take months. If it is seriously overpowered, then it will blow within milliseconds.Ryman wrote:premature failure would be like what? Days, months any idea cuz I don't have a multimeter and eventually I need to get one but don't want to get one right now but if it's smarter than i'll pick it up today
Also, like I said in the tutorial above, the factory resistor values are often printed on the resistors themselves. You may be able to use the numbers printed on top of the resistors to find out if the LED will blow or not.