I've been trying to work out the resistor layout on a flexdrive V4, because with the new 445nm diodes I want to wire in a switch for high/low power.
I've determined that the flexdrive sets the current based on an input resistance, which is adjusted by soldering bridges across resistors to put them in parallel. From this I can gather that a lower input resistance tells the flexdrive to output a higher current. All good so far.
However, I've just spent half an hour trying to figure out how the potentiometer fits into the equation and all I got for my efforts was a headache from looking through the loupe.
Has anyone tried this mod before, or can somebody give some advice as to the best place to wire in a switch and a resistor if necessary? I'm looking to output about 750-1000mA at high power, and anything below 400mA would be nice for the low power option.
I've determined that the flexdrive sets the current based on an input resistance, which is adjusted by soldering bridges across resistors to put them in parallel. From this I can gather that a lower input resistance tells the flexdrive to output a higher current. All good so far.
However, I've just spent half an hour trying to figure out how the potentiometer fits into the equation and all I got for my efforts was a headache from looking through the loupe.
Has anyone tried this mod before, or can somebody give some advice as to the best place to wire in a switch and a resistor if necessary? I'm looking to output about 750-1000mA at high power, and anything below 400mA would be nice for the low power option.