Quote:
Originally Posted by billbo911
To do this, we chose to use a constant current source LED driver and a 3W LED.
Using the constant current source sets the current through the LED to either 330mA or 660mA, depending on how we configure the board, regardless of the battery voltage. This way it does not dim or flicker as we drive or manipulate things. We mounted a single lens 10cm (focal length of the lens) in front of the LED to give us a nicely collimated beam. The intensity of this beam is such that we decided not to leave the photon cannon on all the time, but switch it on only when needed. This is achieved by using a Spike relay.
Let's just say, it works REALLY well. |
I just got a batch of those LEDs and I have been wondering how best to power them. Can you use one of the drivers for multiple of those LEDs in series? Like someone above said, LEDs don't follow standard V=IR rules so I've been somewhat lost on how to handle them.