384:LED – Mini RGB LED array
https://www.electronics-lab.com/384led-mini-rgb-led-array/
Mini (1.44” x 0.94” or 24mm x 37mm) 8X16 RGB LED Array. 128 RGB LEDs with three LED chip each gives 384. For this project I designed two PCBs. A control PCB and a LED PCB. My goal was to fit them both in a small panel inside a 5×5 cm square to use cheap […]
Sound to Light Effect
https://www.electronics-lab.com/sound-light-effect-2/
This project will turn your favorite music into light effects, a microphone picks up the sound and gives light effects with 6 Red LEDs, ideal for creating fun atmosphere at parties & discos. Supply 9V-12V DC. Features Supply 9V-12V DC (PP3 9V Battery) On Board Preset for Gain Adjust 6 On Board LEDs On Board […]
LED current regulator has low dropout
https://www.electronics-lab.com/led-current-regulator-low-dropout/
Peter Demchenko @ edn.com This Design Idea circuit regulates the current through one or more LEDs, making it almost independent of supply voltage. Its main advantage is a very small dropout voltage, which can be less than 100mV. The design could find use on LED strips, where the voltage can vary along the length due […]
Interfacing 8×8 LED Matrix with Arduino
https://www.electronics-lab.com/interfacing-8x8-led-matrix-arduino/
This tutorial will show how to interface a 8×8 LED matrix with Arduino. Example code is provided. LED matrix displays can be used to display almost anything. Most modern LED sign boards uses various types of matrix boards with controllers. In this tutorial we are going to interface a single color 8×8 LED matrix with […]
LEDs deliver 76,000 candelas at a 10° beam angle
https://www.electronics-lab.com/leds-deliver-76000-candelas-10-beam-angle/
Lumileds’ second generation LUXEON CoB Compact Range LEDs feature an efficacy and output boost of up to 16% over its previous generation arrays. The devices cover different power range directional lamps such as a 35W-equivalent and a 50W-equivalent MR-16 lamp, achieving exceptional centre beam candlepower (CBCP). At 1,500 lumens, the LUXEON CoB 209 reaches 76,000 […]
A Smart Night Lamp for Kids
https://www.electronics-lab.com/a-smart-night-lamp-for-kids/
A Smart Night Lamp for kids. Tutorial and source code available: Few weeks ago I heard my nephew (aged 7) complaining of the dark at night. Basically he was afraid. So I decided to put knowledge into practice and build a night lamp for kids. Since the project was intended for kids, I thought of […]
Researchers develop LED covering full visible light spectrum
https://www.electronics-lab.com/researchers-develop-led-covering-full-visible-light-spectrum/
Researchers have developed the first standard LED covering the full visible light, in collaboration with Nichia Corporation. LED and OLED lighting, which is generally called solid-state lighting (SSL), is becoming more common as the next generation lighting. Evaluations of total luminous flux (a performance index for lighting) and color are important for SSL, and to […]
5 channel LED candle using PIC12F508
https://www.electronics-lab.com/5-channel-led-candle/
Here is a 5 LED electronic candle using PIC12F508 able to power each LED with 20mA max. This candle produces a great effect and can be used either as a candle or inside a pumpkin. 5 channel LED candle using PIC12F508 – [Link]
Better LEDs with just a trick of the light
https://www.electronics-lab.com/better-leds-just-trick-light/
Jan Buiting @ elektormagazine.com discuss about a new technique used by scientist to build better LEDs. By manipulating the incident light, researchers of the Complex Photonics Group at University of Twente in Enschede, The Netherlands, have turned light propagating in a layer of scattering nanoparticles into a rising diffusion curve. By transforming the diffusion curve […]
Raspberry Pi Web Server using Flask to Control GPIOs
https://www.electronics-lab.com/raspberry-pi-web-server-using-flask-control-gpios/
In this article “Rui Santos” shows us how to configure Raspberry Pi as server and use it to toggle two LEDs over the internet. In this project you’ll create a standalone web server with a Raspberry Pi that can toggle two LEDs. You can replace those LEDs with any output (like a relay or a […]