Motion Sensor Circuit | IR Detection + Relay Control for 230V Bulb

Описание: KS Electro

Motion Sensor Circuit

In this video, we build a simple IR-based Motion Sensor Circuit using affordable electronic components like LM358, CD4017, IR LED, Photodiode, and a 5V relay. When any object moves in front of the IR beam, the circuit instantly activates the relay and turns ON a 230V bulb.

This animation shows how each part works—IR transmission, photodiode detection, op-amp processing, transistor switching, and relay operation. Perfect for hobby projects, home automation ideas, DIY security lights, and sensor-based systems.

What’s Inside the Circuit?
✓ IR LED + Photodiode Sensor Pair
✓ LM358 Op-Amp for signal processing
✓ CD4017 for stable output control
✓ C2655 Transistor for relay drive
✓ 5V Relay to switch AC load
✓ LEDs for indication
✓ Full list of resistors and other parts

Applications:
• Automatic light on/off
• Motion-activated lamps
• DIY home security systems
• Electronics learning projects

⚠ Safety Reminder:
This project uses 230V AC. Please handle with extreme caution and ensure all AC wiring is insulated and enclosed.

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