Author: Arduino_Master
ESP32 Smart School Timetable Bell System with OLED, Web UI & RTC
This ESP32 School Period Alarm System is a smart, customizable bell scheduler designed to automate school periods, recesses, and end-of-day notifications. With built-in real-time clock (RTC), web-based configuration, and OLED status display, it eliminates the need for manual bell ringing or mechanical timers. This project is ideal for schools, coaching centers, and even factories where […]
Arduino Fire Alarm System with Flame and Temperature Sensor
Learn how to build a DIY Arduino fire alarm system using a flame sensor and temperature sensor. This step-by-step project includes a circuit diagram, code, and real-world applications, ideal for home safety or educational use. Creating a basic fire alarm system using Arduino involves detecting fire (typically via temperature or flame sensors) and triggering an […]
Arduino HC-SR04 Ultrasonic Sensor Distance Meter with SSD1306 OLED Display
Learn how to build an Arduino-based distance measurement device using the HC-SR04 ultrasonic sensor and a 128×64 I2C OLED (SSD1306). Displays accurate distances in millimeters, centimeters, and meters. Perfect for DIY robotics, water level monitoring, parking sensors, and more. š§° Usage Examples of the Ultrasonic Distance Meter Project 1. Obstacle Detection for Robots ā Why […]
Arduino OLED Multimeter Volt Resistance Display on I2C OLED
Learn how to build a compact Arduino Nano multimeter with a 0.91″ OLED display. Measure DC voltage up to 30V and resistance up to 1MĪ© with ease Build a compact Arduino Nano multimeter with a 0.91″ OLED display to measure voltage and resistance using I2C and a push button. š§ About the Project This project […]
Arduino Heartbeat Monitor with Real-Time Pulse Waveform on OLED Display
Monitor your heart rate in real-time using an Arduino-based heartbeat sensor and an OLED display. This DIY electronics project uses a pulse sensor (like KY-039 or Pulse Sensor) to detect your heartbeat and display both the BPM (beats per minute) and a live scrolling waveform on a compact SSD1306 OLED screen. Ideal for beginners and […]
Build a Wi-Fi Scrolling Text Display with ESP8266 WS2812 LED Matrix and Blynk
Create a stunning Wi-Fi-enabled RGB LED matrix display using an ESP8266 microcontroller and a vibrant 8×64 WS2812 LED panel. This project allows you to display scrolling text messages that can be remotely updated and customized via smartphone using the Blynk app. You can control the text content, choose between manual, random, or dynamic rainbow color […]
ESP32-CAM Wi-Fi Doorbell Camera for Smart Home System using Ardiono IDE
This ESP32-CAM Wi-Fi doorbell camera is used as a smart, wireless video doorbell or motion-activated security camera for homes, offices, or remote properties, Low-cost alternative to commercial video doorbells, Battery-friendly with deep sleep mode for long-lasting use, Offline image storage on SD card ā no internet required, Wi-Fi-enabled for optional remote access and upgrades, Customizable […]
Arduino Countdown Timer with TM1637 4 Digit LED Clock Display
The Arduino countdown timer is a compact and user-friendly project designed to let you set and run a timer using physical buttons, with real-time feedback on a 4-digit TM1637 LED display. You can adjust minutes and seconds separately, start or reset the countdown, and receive a clear audible alert via a buzzer when time runs […]
Manual Transmission Gear Position Display on OLED Screen Using Arduino
I have a small hatchback car with manual transmission and I often think to display current gear in the dashboard instrument panel, So I decided to make something fancy, In this tutorial we are going to build a car gear position indicator for a manual transmission (H-pattern) with 5 forward gears + 1 reverse using: […]
Control Gate Lock with Your Fingerprint by Using Arduino and Fingerprint Scanner
Here’s a complete outline and Arduino sketch for controlling a solenoid Gate lock using a fingerprint scanner, displaying status on a 0.91-inch I2C OLED (128×32 or 128×64), and storing/recognizing fingerprints. š§° Required Components š Wiring Diagram (example) Fingerprint Sensor (R307): Sensor Pin Arduino Pin VCC 5V GND GND TX D2 RX D3 Uses SoftwareSerial for […]