adgmeijin said:Hey chimo i am talking to you , like i am saying i build already the unit, i use 6 LR44 to make 9v, i adjust the trim pot til 38ma, can i adjust it to the ma you got there to light the matches? im worrying that my bluray will die after i done that, what you preferred me to do in my situation , thanks.
The LR44s voltage will sag quickly, but they may run it for a while. If you have Li-ion charhing capability, 2x 10180 Li-ions will fit in teh space of 6xLR44s. The laser was lighting matches at the upper end of the drivers range (~60mA). I did not test it in between. Remember that individual LDs will differ and the current that one will tolerate may kill another. Good Luck!