Using laser as light source - wuyuanyi135/stm32-camera-controller GitHub Wiki

To use laser as light source, un-wire the 12V power supply to the board. Then, connect the jump header (left, farthest from the buck converter) to the +12V power supply. This will make the MOS output 5V instead of 12V when activated. If necessary, write toggle_polarity\n and then 'commit\n` to flip the polarity.