It was the switch led part that confused me! Laptop I am on dosnt show his drawing very well, so I couldnt see it. Would a constant current source, via say a variable voltage regulator be better with a pot on? excepting of course that the leds are all identical because he has carefully matched them first, so say set that for a max of 80mA and have a pot to adjust it down?
But I have a sneaky the driver for this will be a micro
But I have a sneaky the driver for this will be a micro