This post by @Crossroads shows a simpler diagram for the transistor, it puts it in series. Is the LED supposed to get + current from the LM317 and then get the - negative side directly from the transistor?
That makes sense to me, just a little confused by all the drawings that show the adjust pin connecting to the out leg of the LM317 after the resistor and before the LED. Does the adjust leg connect to the transistor? Or is it only connected to the - negative side of the LED, GND and the Arduino?
