Tag: DIY Electronics
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. 🧰 Usage Examples of the Ultrasonic Distance Meter Project 1. Obstacle Detection for Robots ✅ 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 1MΩ 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. 🔧 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 […]