Category: Arduino UNO
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Smart City Mini Project Using Arduino UNO
(Street Light Automation, Smart Gate & Air Quality Alert) Smart cities are built by combining automation, sensing, and decision-making.In this project, a Smart City model was developed using an Arduino UNO and commonly available sensors to demonstrate how embedded systems can be used for urban automation. This project focuses on real-world logic, not just blinking…
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Arduino Uno Dot Matrix Display Using MAX7219 (Scrolling Text)
In this project, we interface an 8×8 Dot Matrix Display (MAX7219) with Arduino Uno to display scrolling text using the MD_Parola library. This setup is ideal for learning: All components, wiring, code, and flashing are available on a single page for smooth lab execution. Circuit Diagram (Arduino Uno + MAX7219) The circuit below shows the…
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AI Robot Head Tracking Using Browser Vision (No Training, No Server)
Turn your head left, right, up, and down. Connect Direction: Flipped Download FreeCAD project and STL files Introduction Most “AI robot face” demos rely on heavy machine-learning models, cloud APIs, or large datasets.This project explores a different approach: Using simple geometry and browser-based vision to create an expressive robot head that reacts to human movement…
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RGB LED with Arduino UNO/Nano
What is an RGB LED and What Are We Building Here? An RGB LED is a special type of LED that contains three LEDs inside one package — Red, Green, and Blue.Using these three colours, the Arduino can blend them at different brightness levels to produce hundreds of colours like yellow, cyan, purple, pink, white,…
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How to make an Obstacle Avoiding Vehicle using Arduino UNO
Arduino Sketch Code Explanation The code is a simple obstacle avoidance program for a robot using an ultrasonic sensor and two motors. Let’s break down the code and explain each section: In this section, the code defines constants for motor pins (m1p, m1n, m2p, m2n) and pins for the ultrasonic sensor (echopin for echo and…
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How to use attachInterrupt() in Arduino IDE to toggle an LED
Arduino, with its user-friendly environment and a vast array of libraries, opens up a world of possibilities for electronic enthusiasts and hobbyists. One of the key features that makes Arduino a versatile platform is the ability to use interrupts. In this blog post, we will explore the use of attachInterrupt() in the Arduino IDE to…
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How to Transmit Data via UART with ATmega328P in AVR C using Arduino IDE
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How to Initialize UART Communication with ATmega328P in AVR C using Arduino IDE
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How to make a SONAR based on an ultrasonic sensor
SONAR stands for Sound Navigation and Ranging. SONAR uses the concept of ultrasonic waves that get reflected from the object in front of it. And the time it takes between the transmission and reception tells us about the distance it has traveled. Components Required After making the connection you have to make a sketch and…
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How to make a simple Traffic Light using Arduino UNO
Everyone must have seen those big lights in red, yellow, and green color at the corner of every road. Some even flash. Some stay lit all day long. Big junctions have a separate controller which synchronizes these lights. So that the traffic flows smoothly. And the possibility of having a deadlock is minimized. That is…