The circuit diagram of the motion sensor alarm is shown in Fig. 3. It consists of a PIR motion sensor (MS1), Arduino Nano (Board1), LM386 audio amp (IC1), and 8-ohm speaker. You can use any Arduino ...

As part of a collaborative project, my team and I designed and built a motion detector alarm circuit. This project involved integrating sensors to detect movement and trigger an alarm, enhancing ...

Circuit and Working. Circuit diagram of the motion detector security alarm is shown in Fig. 2. It is built around a Digispark board, PIR sensor, 9V battery (BATT.1), resistors (R1 through R3), ...

Demonstration of Motion Sensor Circuit. By following the 555 timer motion detector circuit diagram given above, I created the circuit on perf-board, the video of which is available at the end of the ...

Motion detection is an essential part of security systems and PIR sensor is one of the most commonly used sensor for trigging the alarms when motion is detected. This sensor can detect human/animal ...

If motion is detected, it will turn on a connected LED (connected to pin 7) to provide illumination. This is perfect for spaces like bathrooms, hallways, or closets, where you only want the light to ...

This contacts (or spare contacts) can also be used to activate a high-power warning alarm. Please note that, here T1 is wired as a mini electronic timer. Even after the PIR relay switched off, output ...