Cyntech lisiparoi led ring flash for raspberry pi cameras cyntech lisiparoiwht 01 the lisiparoi light ring flash from cyntech gives your raspberry pi camera the extra light it needs to capture better images or capture images in interesting new situations it can either be used as a fixed light source or like a traditional flash unit driving the lisiparoi is simplicity itself attach power to the board 5v dc gnd then use a single digital output signal to switch the light on logic 1 o