I built an RGB thermometer with its own web interface that can control home appliances based on temperature changes

This project transforms basic components like LED strips and an Arduino into a professional-grade arcade experience

Practical Guide to Reyax RYLR998 LoRa Modules: Real-World Performance, Bidirectional Communication with Acknowledgment, and Arduino IDE Firmware

Build a wireless, portable smart-home control tablet

In this tutorial, I am going to talk about the PC817 Optocoupler which is one of the most common and inexpensive 4-pin optocouplers.

A fully engineered obstacle-avoidance robotic car featuring a complete SolidWorks design, 6-sensor perception, and Arduino-based control—built as a foundation for future autonomous navigation modes.

Diyas are the heart of major Indian festivals, most notably Diwali, the "Festival of Lights." Lighting rows of diyas during Diwali symbolizes the victory of Lord Rama over Ravana and the welcoming of prosperity and Godess Lakshmi (the goddess of wealth). Tired of oily Diyas? In this tutorial, I will show you guys how I created these super simple 3D printed Diwali Diyas which are safe, non greasy, reusable, easy to make and will last forever.

Simple Audio Spectrum Analyzer with multiple adjustable display, speed, and sensitivity modes for a customizable audio visualization experience.

This project successfully transforms a vintage TV into a functional and stylish retro clock.

A wireless voice-controlled system where the UniHiker K10 recognizes commands like “light on” or “blink off” and sends them via UDP to control an ESP32 LED in real time.

Battle Unknown India, powered by RollnDrive, is a modular robotics platform built for both STEM learning and competitive robotics. Designed and manufactured in India, our robots combine high performance, durability, and educational value. The kit includes a high-torque drive system, modular attachments, and wireless control, allowing students and teams to easily switch between Robo Sumo and Robo Soccer modes. Our programmable version supports sensors, servos, and Arduino IDE for hands-on coding and experimentation. With safe battery systems, compact PCBs, and 3D-printed chassis, the robots are easy to assemble, repair, and customize. Ideal for schools, colleges, and innovation labs, Battle Unknown India makes robotics learning powerful, affordable, and accessible for every student and creator.

ESP32 connects to WiFi, fetches live weather via WeatherAPI, syncs time using NTP, and displays temperature, humidity, visibility, date, and weather icons on a Nextion screen.

This project uses a Digispark ATTiny85 to act as a USB mouse jiggler. Using the DigiMouse library, it emulates a mouse and moves the cursor in a small square pattern every few seconds, preventing the computer from going idle or locking automatically.

OmniFire is an intelligent autonomous robot capable of detecting and extinguishing fires using dual fire extinguishers, 12 ultrasonic sensors, and omnidirectional Mecanum wheels. Powered by an Arduino–Raspberry Pi hybrid control system, it combines precision motion, real-time environment mapping, and autonomous fire suppression for safety applications in homes, factories, and labs.

For this Halloween, I'm fusing the creative blocky world of Minecraft with the spooky glow of the colorful RGB LEDs in a fun and simple Halloween project.

This simple Static Charge Monitor uses a parallel-plate detector and TL071 op-amp circuit to measure electrostatic fields, with real-time visualization via Arduino and PC software.

Despite its simplicity, this Clock is fully functional, highly adjustable, and has the option of automatically setting the time via the Internet.

PRAVESH is an IoT-driven RFID gatekeeper that revolutionizes campus access with seamless, secure, and paperless entry—delivering real-time logs and instant automated approvals.

Air quality sensor, CO2, pm2.5, pm10, TVOC, Carbon Dioxide, Atmospheric pressure, Humidity, Temperature esp32 Arduino