LED
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How to build a Wearable Air Quality Monitor Pendant using STM32 & SGP40 Sensor Indoor and outdoor air pollution significantly impacts human health, causing respiratory issues and reducing life expectancy. Personal air quality monitoring has become essential for protecting ourselves from harmful airborne contaminants like volatile organic compounds (VOCs), particulate matter, and toxic gases. This DIY wearable air quality monitor pendant… |
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LED Matrix Display Project Uses ESP32 and Raspberry Pi Platforms If you've ever wanted a customizable smart display without the high cost or vendor lock-in, this DIY project might inspire you. Adam Conway, Lead Technical Editor and Developer for XDA, recently shared how he turned a Waveshare 64x32 P2.5 RGB matrix panel into a fully functional LED display using both a Raspberry Pi and an ESP32. A HUB75 interface, which is standard for these types of… |
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AI Trash Cans That Can Trash Talk and Chase Garbage A Chinese DIY studio, tired of its messy workspace, decided to take smart cleaning to a whole new level. They went ahead and built 20 AI-powered trash bins that can detect, chase, and catch flying garbage, all while giving you lip if you miss. The team gave the trash bins cameras, embedded AI models to recognize thrown objects, and motors for movement. When a piece of trash flies… |
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Inside the DIY Robot That Rolls Like a Drone on the Floor Max Imagination has published the making of a DIY spherical robot that moves by rolling inside a transparent plastic ball. It’s meant to entertain pets, explore tight spaces, and be driven via smartphone, like an FPV drone that rolls on the floor. The project uses an XIAO ESP32S3 Sense from Seeed Studio, which includes Wi-Fi, a 2MP camera, a mic, and a microSD slot. Two geared motors… |
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Gas Leakage Detector Using Arduino: Complete DIY Guide Gas leaks can pose serious safety risks, especially in homes, kitchens, and small commercial spaces. In this project, you'll learn how to build a simple and budget-friendly gas leakage detector using Arduino. This LPG gas leak detector uses an Arduino Uno and MQ-5 gas sensor to detect gas levels in the air and activates a buzzer and LED to alert users when a leak is… |
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This Transformer Robot Was Built to Be Ridden, Not Just Looked At A maker built a real-life transformer robot that switches from a car to a robot, just like in the movies. The build is designed for someone to ride, much like a toy car. The robot uses Gimson Robotics 99.5:1 gearhead motors with additional 3D-printed two-stage gear reductions. Six motor assemblies power all leg joints. It uses AS5047 magnetic encoders to track joint positions, allowing… |
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ROHM Expands NIR LED Lineup with Miniature Models for VR, Industrial, and Medical Use ROHM announced the launch of a new series of compact surface-mount near-infrared (NIR) LEDs, designed to meet the surging demand for precise, power-efficient sensing in contemporary applications such as VR, AR, automation systems, and biosensors. The introduced lineup includes six models across three package configurations. The LEDs are available in 850nm and 940nm wavelengths, tailored… |
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Introduction to Optocouplers Have you ever heard the word isolation, especially in electronics? As you might guess, isolation is a key factor when it comes to optocouplers. Isolation is sometimes mandatory and sometimes an extra feature in circuits. Optocouplers are used in many electronic devices, from mobile electronics to household electronics. So, in this… |
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How to Build a Smart Helmet using Arduino? In this project, we’re making an ordinary two-wheeler helmet smart using an RF Transmitter & Receiver. The best part: this Arduino-based smart helmet is simple to build and does not require advanced engineering knowledge or complex components. Smart Helmet using Arduino - Quick OverviewBuild Time: 6-8 hours | Cost: $40-60 | Difficulty:… |
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Fusion Chime Vision, A ESP32-Based Smart Doorbell System for Modern Smart Homes Fusion Chime Vision is an advanced open-source doorbell system built around the ESP32 microcontroller platform. It replaces a conventional chime with an interactive device that displays custom messages or images on its built-in screen and captures photo and audio clips when motion is detected. With real-time video streaming and two-way audio communication, it… |
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Nexperia Unveils 12-Channel 40V LED Driver for Safer and More Efficient Automotive Lighting Nexperia has introduced a new 12-channel, 40V LED driver IC, especially made for automotive lighting. Such as tail lights, brake lights, signal lights, and in-cabin illumination, it is AEC-Q100 qualified and ASIL-B compliant. One of the biggest advantages of the NEX13120FPC-Q100 is its exceptional thermal performance. It has a… |
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Build a Smart Digital Game Board Using Multicolour PCB Ludo, one of our cherished childhood board games, holds a special place in our hearts. Its simple yet engaging gameplay that provided countless hours of fun and bonding. However, as times have changed, so have our ways of enjoying these nostalgic pastimes. Today, children often experience classic games like Ludo through smartphones and gaming consoles, losing the… |
