Model aircraft card camera picture, with microphone.
Wiring as shown
When there is no card inserted, the red LED on the power-on board flashes. When there is a card, only the blue light is on. When the camera end gives a low level, the photo is taken. At the same time, the red LED flashes once. It can also be controlled by a button switch. Connect a button switch to the black line (negative pole) at the camera end and the camera end respectively, and then you can jog the button switch to control.
Applicable voltage: DC 3-5V, positive and negative poles cannot be reversed