EXASUB

Category: Development Kit

  • 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…

  • 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…

  • 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…

  • 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,…

  • Make a Joystick-Controlled Car with ESP32 and NodeMCU

    Are you interested in making a remote-controlled car using ESP32 and NodeMCU? In this project, we will use a joystick module to control a car wirelessly. This is a fun and simple way to explore ESP-NOW communication and motor control! What You Need To build this joystick-controlled car, you will need: How It Works Wiring…

  • 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…

  • 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…

  • How to use Mini STM32 v3.0 USB Port as Virtual Com Port

    To use USB port of the mini STM32 v3. We need to configure the USB port and for that, we have to look at the schematics. You can view the Full schematic here https://www.exasub.com/development-kit/mini-stm32-v3-0/mini-stm32-v3-0/ From the schematics, we see that there are three pins associated with the USB port.1. PA112. PA123. PD2 The Pins PA11…

  • Raspberry Pi Pico W as Bluetooth Low Energy Central Device and Peripheral Device

    This is a very simple demonstration of the Unsecured Bluetooth Low Energy technology. I am using two Raspberry Pi Pico W for this.One will be operated in Central Role and the other will be in the Peripheral Role. The peripheral device will advertise the temperature data of the rp2040 chip. The Central device will scan…

  • How to use Bluetooth LE of Raspberry Pi Pico W using MicroPython

    Step 1: Download the MicroPython UF2 file from the link below https://www.raspberrypi.com/documentation/microcontrollers/micropython.html Download the UF2 file which has Wi-Fi and Bluetooth LE support. Step 2: Put the UF2 file in your raspberry pi pico w Step 3: Save the following files in your raspberry pi pico w As you can see in the image, these…