Motion detector mockup
Motion detector model that issues an alert whenever you feel movement nearby. When it feels movement, it triggers an alarm and generates a sound. Supplied without 4,5 V battery.
The circuit is connected when the photoresistor detects a variation of light. Therefore, the detector must be connected in front of a wall or an illuminated surface. The advantage of this circuit is that it is completely independent of the light intensity. The ideal setting for the lighting conditions is made using the 1 MOhm potentiometer. A variation in brightness causes a change in voltage at the motion detector input. This voltage is transmitted through the 2,2 μF capacitor, which connects the Trigger-Schmitt circuit composed of transistors T1 and T2. Detection is announced with the illumination of an LED or with a buzzer
To assemble this model, you will need the following material:
- Welder 30 W
- Thread for electronic soldering (with flux)
Dos download for free of the instruction leaflet.