How to make a simple camera monitoring system II.

1. The camera is installed on the back of the circuit board.

2. Weld a step-down resistor on the small lamp, because it is connected to 12V power supply, and connect a resistor of 22K to the small lamp, so that the small lamp will not be particularly dazzling.

3. The surveillance camera is completed.

4. The following is the demonstration session. Connect the video output line to the Lotus Tower, connect the 12V power supply, light the indicator light, and aim the camera at the outdoor. There's a picture on the surveillance TV, which is a little fuzzy and it's estimated to be far away. Although the effect is not as good as professional equipment, indoor close-range monitoring is completely sufficient. And the volume is small, and there is a layer of cardboard on the surface that can be faked.