Curiosity runs in my blood! I love breaking & building stuff, which I do as an Hardware Executive.
Things that I have worked on:
We use a KY-038 sound sensor that generates a high output whenever it detects a sound signal. We have to clap to generate a loud sound so the sensor will detect it. When you clap near the sound sensor the LED will go on when you clap again the LED goes off.When a clap is detected by the sound sensor, the Arduino processes this input and sends a signal to the relay module. The relay module, in turn, activates or deactivates the external device depending on its current state.the Arduino Uno acts as the brain of the project, coordinating the detection of claps, processing the signals, and controlling the relay module to manage the external device based on the detected claps.
Intruder alarms detect attempted intrusion or unauthorized entry into a building, room, site or secure installation and trigger a response. Well-fitted and maintained intruder alarms can make organisations and individuals less likely to become victims of burglary, vandalism and other forms of attack..The PIR sensor is connected to the Arduino's digital input pin.The Arduino code continuously reads the PIR sensor's output.When the PIR sensor detects motion (intruder), the output goes high (logical 1).The Arduino code recognizes the change in signal.The alarm is triggered:Buzzer sounds continuously (or for a set duration).LED turns on
An RFID door lock is a type of electronic lock that you access using credentials like key fobs or key cards that are powered by RFID technology. RFID (radio frequency identification) technology uses electromagnetic fields to enable communication between two devices: tags and readers.Each authorized user is issued an RFID tag, which contains a unique identifier. These tags are typically small, passive devices that can be attached to keychains or cards for easy carrying.The Arduino-based system is equipped with an RFID scanner or reader. This scanner is capable of wirelessly reading the unique identifiers stored in RFID tags when they are brought into close proximity.The Arduino microcontroller acts as the central processing unit of the system. It is responsible for interfacing with the RFID scanner, processing the data received from scanned RFID tags, and controlling the locking mechanism of the door.if the RFID tag's identifier matches that of an authorized user, the Arduino controller triggers the door lock mechanism to unlock the door, allowing access. This can be achieved using an electronic door lock, a servo motor, or a solenoid, depending on the specific design of the system.
Keypad Lock System requires a numerical code to grant entry to a facility or property. The code is punched in by users via a numerical pad, similar to those on a basic calculator. If the correct code is entered, the door lock or deadbolt should release.The biggest advantage is convenience. It eliminates the necessity of keys. There's no need to carry them around, keep track of copies and spares, or change the door lock when a key is stolen or misplaced.
The keypad is connected to the Arduino for user input.The Arduino code stores the correct password in its memory.When the user enters a code on the keypad, the Arduino compares it with the stored password.If the code matches, the Arduino activates the unlocking mechanism.Servo motor rotates to unlock a physical latch (requires additional mechanism).Relay triggers an electronic lock.
The smoke sensor is connected to the Arduino's analog input pin.The Arduino code reads the voltage level from the smoke sensor.Clean air produces a baseline voltage level on the sensor.Smoke reduces the voltage level due to the sensor's internal resistance.The Arduino code compares the sensor reading against a threshold value.If the sensor reading falls below the threshold (indicating smoke), the Arduino triggers the alarm:Buzzer sounds continuously.Red LED turns on.Otherwise, the system operates normally.Green LED remains lit.Buzzer stays silent.
A smart home automation system integrates devices like lights, thermostats, and cameras, enabling remote control and monitoring. Managed through hubs or mobile apps, it often supports voice commands, automation, and energy efficiency. Key features include security integration, interoperability, and privacy measures. Users can create scenes, control devices remotely, and enhance overall convenience and security in their homes.
There are two main approaches for unlocking the door
ESP8266 connects to your Wi-Fi network.WE program a web server on the ESP8266.Access a web page on your smartphone or computer to send an unlock signal.The ESP8266 receives the signal and activates the relay module.The relay triggers the solenoid lock to unlock the door.
ESP8266 connects to blynk iot a mobile app to communicate with the ESP8266.The app sends a signal ( via Wi-Fi) to the ESP8266 upon user interaction (e.g., button press).The ESP8266 receives the signal and activates the relay module, unlocking the door.
Smart dustbin utilises ultrasonic technology to detect the presence of waste and automatically opens its lid, making disposal effortless and hygienic. With its Arduino brain, it intelligently optimises space and notifies users when it's nearing capacity, ensuring timely emptying. Embrace convenience and sustainability with our Smart Dustbin, revolutionising the way you manage waste.he ultrasonic sensor is mounted on the lid or inside the dustbin.the ultrasonic sensor is mounted on the lid or inside the dustbin.The Arduino serves as the brain of the smart dustbin. It receives data from the ultrasonic sensor and processes it to determine when the dustbin needs to open or remain closed.A servo motor or actuator is connected to the lid of the dustbin. When triggered by the Arduino, it opens the lid to allow for trash disposal. The servo motor ensures precise control over the lid's movement, allowing it to open smoothly and efficiently.Users interact with the smart dustbin by simply placing trash near the ultrasonic sensor. The Arduino detects the presence of the trash and triggers the servo motor to open the lid, allowing for easy disposal. After a predefined period or once the trash has been removed, the lid automatically closes to contain odors and maintain cleanliness.