Web-Server based IoT Door Lock System

This device is an IoT based door lock that can be controlled through the cloud from anywhere around the world on android as well as ios

IntermediateFull instructions providedOver 1 day1,449

Things used in this project

Hardware components

NodeMCU ESP8266 Breakout Board

solenoid lock

1 channel relay

Software apps and online services

Blynk

Story

This project is used to control door locks via the cloud without any physical

contact. It can be used in both industrial sectors and for personal use as well.

The main goal of this project is to access the door lock from anywhere in the

world via the cloud. The applications are potentially limitless for this project as

they can be used in many more fields such as banking, logistics, and even in

courier services.

Goals

1.To fabricate a device that can open and close door locks via the cloud.

2.Making an IoT-Based Door lock that is secure and one that only the user can

access

Specifications

The process this project is done is by interfacing a Solenoid Door Lock to an

SoC IoT board via a relay module and the board can be programmed to be

accessed from the cloud. The cloud which is used works in all mobile platforms

including Android and iOS.

This project can also be replaced with better sets of SoC boards, Relays, and

Solenoid Locks based on the needs of where it is used. This project can also be

modified eventually to support a network of devices of the same application

that can be connected to the cloud via mesh networking and used collectively

in a single application in a mobile phone. This essentially means that multiple

IoT door locks can be made and accessed by us even only if a single device

(master device) is connected to the internet. This works only if the other

devices are in range with the master device which usually has sufficient power

to establish long-range mesh networks.

Security

This system is very secure as only the user who has the API credentials and the cloud login ID would be able to access this system, the Administrator can also determine who gets to use this system for themselves.

Blynk Dashboard in Mobile app

Code

smart door lock code

#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "";//authtokeninside""
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "DOORLOCK";
char pass[] = "DOORLOCK123";
int relayInput = 4;
BLYNK_WRITE(V1) {
if (param.asInt()==1){
digitalWrite(relayInput, HIGH); // turn relay on
digitalWrite(14, HIGH); //led yellow on pin 5
digitalWrite(12, LOW); //led red off pin 6
}
else{
digitalWrite(relayInput, LOW); // turn relay off
digitalWrite(12, HIGH); //led red on
digitalWrite(14, LOW); //led yellow off
}
delay(300);
}
void setup() {
Serial.begin(115200);
Blynk.begin(auth, ssid, pass);
pinMode(relayInput, OUTPUT); // initialize pin as OUTPUT
pinMode(12,OUTPUT);
pinMode(14,OUTPUT);
}
void loop()
{
Blynk.run(); // You can inject your own code or combine it with other sketches.
}