Hi, I meant to do this type of driver for my new projects.It is very simple and very efficient.With this driver you can regulate output power from 5-95%.So you can adjust power output for laser diode which she need.Just worries me what will happen if the batteries are for example discharged to half, and here is no feedback circuit to regulate the PWM(ofc. you can manually do this with potentiometer P1,but it is not practical).What do you think if this is a smart solution for using as laser driver.