Yes. I power the circuit as soon as the gimbal is pointed straight. Then as I fly I tilt the camera and the mercury lets the power flow into the LED from the converter output. When the light is off the converter is still running and so is the little cooling fan for the LED. When the LED is on the current draw drops the fan speed in half so having it run when the light is off is good to cool it between bursts.So basiclly the Mercury is to on and off the light? something like that ?
P.S. I think I could do without the fan since the props are blasting air across the heat sink all the time. I may be actually cooling it less with the fan than if the fan was not in the way. I may ditch the fan and see what happens tonight. That will drop a few grams off I guess.