Tag: Led

Nichia Corporation, the Japanese chemical engineering and manufacturing company, announced the NVSW319A as a new high-power LED that achieves 164 lm/W at 700mA (5,000K). The 319A is a 3.5x3.5x2.1 mm size LED which is footprint compatible with the old 3.5mm LEDs. The breakdown is...

Today I am going to discuss how to make a very simple DIY Breathalyzer using Arduino UNO and few external components. Ana Carolina designed this project as an instructable in instructables.com. This is a low-cost project and a useful one too. If you have no idea about what...

A geeky Christmas decoration made with 56 LED Neopixel and controlled via an Arduino Micro board: Let’s take a look, therefore, at the project’s electrical section, that is essentially composed of a set of 56 Neopixel LEDs, that have been arranged so to form two concentric stars;...

David Johnson-Davies designed a minimalist ATtiny85-based watch using 12 LEDs, arranged like a clock face, to show the time in analogue-style. He writes: To show the time you press the button on the watch face, and the time is then displayed for four seconds. It lights one LED to...

This project is an electronic dice. It consists of seven LEDs positioned like a dice which light up to show the number. The leds are controlled by a 74HC4017 decade counter IC. Of this IC six outputs are used to drive the LEDs and a seventh output is used to reset the counter. This...

Designed for everyday food analytics, the SFH 4735 LED emits broadband infrared light in a wavelength range from 650 to 1,050 nanometers. by Julien Happich @ edn-europe.com The component is well suited as a light source for near-infrared spectroscopy, for example to assess the...

ray @ rayshobby.net build a wifi enabled color led matrix using ESP8266. He writes: Last Thursday I had a lot of fun doing a workshop at my college (UMass Amherst) where I taught students to use a WiFi-enabled Color LED matrix combined with Javascript programs to create animations...

dannyelectronics.wordpress.com discuss about how to build a mcu based LED vu meter and provides sample code. From time to time, I see people trying to build an audio VU meter. In the analog era, that’s typically done with a voltage divider + a series of comparators; or using chips...