I could use a little help setting up this tail light. I just burnt up a buck toot somehow so I thought i'd make my own. I have a 6v battery powering a xr-e. Instead of the buck toot I thought i'd try a resistor. From this page LED calculator for single LEDs I calculated a 10ohms 2w resistor will regulate me to 3v/300mah. Can anyone check my logic or math here? Should I add a 3v regulator and change the resistor?
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Thread: Regulator or Resistor?