LED
|
Smart WLED Clock with RTC, PIR, Audio feedback and Environmental Monitoring The integration of addressable LEDs with the WLED firmware has revolutionized DIY lighting projects, allowing for complex visual effects with minimal to no coding. However, most standard WLED-based clocks face significant limitations, such as time-drift during internet outages and continuous power consumption regardless of room occupancy and no alarms. To address these issues, this… |
|
Modular LEGO-Style Sim Racing Dash Box Built with ESP32-S3 Creator Xshift has designed a fully custom, modular sim racing dash box inspired by LEGO-style expandability. The idea is to create a button box where components like switches, encoders, and displays can be easily added or rearranged using magnetic mounts.. The enclosure was 3D printed and post-processed to achieve a clean finish, while the front panel was laser-cut from acrylic and… |
|
The ESP32 Smart Water Bottle That Does Way Too Much The maker, Alex from Hobby Built, created a really interesting smart bottle that goes far beyond just holding water. This bottle can play your favorite songs, charge your phone wirelessly, display customizable LED lighting, and even indicate the water level inside in real time. What makes it even more impressive is how thoughtfully the entire structure is designed. The outer body is built… |
|
Li-Fi and FSO Startup Velmenni Raises ₹30 Crore in Pre-Series A Round Delhi-based startup Velmenni raised ₹30 crore in a pre-Series A funding round, led by pi Ventures, which also saw participation from MountTech Growth Fund-Kavachh and Apekso. The company intends to use the raised capital to help commercialize its patented light-based wireless connectivity solutions, build customized solutions for defence and enterprise, and expand globally. The… |
|
Build a Simple Optocoupler Tester Circuit for Fault Detection Optocouplers frequently fail without a sound in labs or during repairs. The package appears to be undamaged, but there may be no output from the LED source or the photosensitive output stage. Testing for failure with a multimeter is only partially effective, whereas a dedicated optocoupler testing circuit provides clear results in just seconds. For related tutorials… |
|
Maker Builds 120,000-Lumen 1.5kW Water-Cooled Flashlight A maker recently engineered an extreme, portable lighting system built around one of the brightest LEDs available, capable of producing more than 120,000 lumens while consuming roughly 1.5 kW of power. Because such an LED generates enormous heat, traditional cooling methods quickly fail. To prevent thermal damage, the project focuses heavily on a liquid-cooling system designed to dissipate… |
|
HackyFi: The Pocket-Sized Hacker’s Toolkit HackyFi, one of the tiniest yet most capable USB-C development dongles built for hackers, makers, educators, and security researchers. Powered by the Raspberry Pi RP2350A microcontroller, the ultra-compact device integrates a 0.85-inch LCD screen, dual programmable buttons, RGB status LED, 2MB onboard flash, and a microSD card slot all inside a keychain-sized form factor. Designed to challenge… |
|
Reverse Polarity Protection Circuit Using P-Channel MOSFET You’ve just finished assembling an electronic project and are ready to power it up, only to realize the battery might be connected backwards. In an instant, a simple mistake can destroy hours of work. Reverse polarity is one of the most common causes of circuit failure, from hobby projects to industrial systems. The good news is that a well-designed reverse polarity… |
|
Custom RGB 14-Segment Display Built from Scratch YouTuber EastMakes set out to build something, a true RGB 14-segment display module. Wanting a retro alphanumeric display style for a large LED message board project, he designed his own module using ultra-tiny SK6805 addressable LEDs measuring just 1.5 mm square. Since datasheets lacked precise placement references, he scanned a physical display and calibrated the image in CAD software to… |
|
LiteWing Flight Positioning Module NeoPixel Status Control (WS2812B) In this guide, we focus on the WS2812B addressable RGB LEDs on the LiteWing Flight Positioning Module. The module includes four NeoPixel-compatible LEDs, each independently controllable via software. These LEDs are useful for flight status indication and visual debugging during development. A curated collection of hands-on drone projects with guides showing how to… |
|
Driving NeoPixel LEDs Using Pure Hardware - No Microcontroller, No Code A recent video by Axiometa explores an unusual electronics challenge: driving addressable NeoPixel LEDs entirely in hardware, without any microcontroller or code. Since WS2812-style LEDs normally rely on tightly timed digital data from MCUs, the project asks whether basic components like counters, timers, and logic gates can replicate the protocol. The goal was to generate the required pulse… |
|
Voice Activated LED Controller with Touch Interface Using ESP32S3 Box 3 Voice control has become an integral part of modern smart home automation. In this tutorial, we build a voice-controlled LED system using the ESP32-S3-BOX-3 development board, combining wake word detection, speech recognition, touch interface, and audio feedback to create an intelligent control system. The code will be based on the factory example provided by… |
