Project of Reed Switch Automatic Door System |

Описание: In this video, you will learn how to create a Reed Switch Sensor–Based Automatic Door Open/Close System, a perfect project for school students, STEM activities, beginners, and smart home demonstrations.

A reed switch detects the magnetic field from a magnet. When the magnet comes close, the switch closes; when the magnet moves away, the switch opens.
This mechanism can automatically control LED indicators, motors, and door movement.

🔥 What You Will Learn

How a reed switch sensor works

How magnets trigger automatic systems

How to activate a motor and LED indicators

How to design an automatic door open/close mechanism

Real-time uses in smart home automation

🧰 Components Needed

Reed Switch Sensor

Small Magnet

DC Motor (Door opening mechanism)

LED Indicator

220Ω Resistor

5V–12V Battery

Buzzer (optional)

Connecting Wires

⚡ Simple Circuit Logic

Reed switch → acts as the door trigger

Magnet near switch → Door opens (motor ON)

Magnet away → Door closes (motor OFF)

LED and buzzer can be added for status indication

⚡ Basic Circuit Connection

Battery positive → Reed Switch

Reed Switch output → Motor positive + LED (through resistor)

Motor negative → Battery negative

LED negative → Battery negative

👉 When the magnet comes close, reed switch activates:
✔ Motor rotates → Door opens
✔ LED glows indicating "Open"

👉 When magnet moves away:
✔ Motor stops → Door closes
✔ LED turns OFF

🎯 Real-Time Applications

Automatic door systems

Smart home automation

Refrigerator door sensors

Security systems

Window open/close detection

Magnetic safety alarms