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bluetooth-door-lock-7e896d-en.md

In this Project, we will make door lock by using Arduino UNO R3 and Bluetooth module HC-05. we also install Arduino Bluetooth controller app in the the mobile.

EXPANDED TECHNICAL DETAILS

Wireless Access Control Security

This project transforms a standard mechanical lock into a smart, wirelessly controlled security portal using a smartphone interface.

  • Encrypted Serial Handshake: Communicates with a mobile app via an HC-05 Bluetooth module. The Arduino listens for a specific encrypted character string; upon a successful match, it initiates the unlocking sequence.
  • Solenoid / Servo Actuation: Controls a high-torque high-current solenoid bolt or a locking servo via a power MOSFET or relay. This separates the high-power mechanical load from the delicate Arduino logic.

Fail-Safe Features

  • Manual Back-up Hub: Includes an emergency physical button and a low-battery alert system that notifies the user via the BT link if the lock's power source is critically low.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Bluetooth Door Lock"
description: "How to make Bluetooth Door Lock by Using Arduino"
author: "munir03125344286"
category: "Home & Automation"
tags:
  - "hc-05"
  - "bluetooth control door lock"
  - "how to lock an unlock door wit"
  - "door lock"
views: 13957
likes: 15
price: 1120
difficulty: "Intermediate"
components:
  - "1x Arduino UNO"
  - "1x Soldering iron (generic)"
  - "2x 2.2k Resistor"
  - "4x Relay (generic)"
  - "1x Car door lock actuator"
  - "1x Jumper wires (generic)"
  - "2x BD139 Transistor"
  - "1x Hot glue gun (generic)"
tools: []
apps:
  - "1x Arduino Bluetooth Controller"
downloadableFiles: []
documentationLinks: []
passwordHash: "c198a9c6a9f74aca807182d32159a2d016915092fcc84dc4cd773e235c77aaa1"
encryptedPayload: "U2FsdGVkX1/AotkG+CArB76GD3fZAEdZdBpdn/9ekSrBiuCyC2TjrQQdvOXLfysfq80c7w/0csvprPMuqxVXkncECVIaKJXj5UWlpmWn4mqvLeeKf7PyRTsEpATwyrHI"
seoDescription: "Build your own Bluetooth Door Lock using Arduino. A simple step-by-step guide for smartphone-controlled security."
videoLinks:
  - "https://www.youtube.com/embed/5rOXP0NqkQk"
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/bluetooth-door-lock-7e896d_cover.jpg"
lang: "en"