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19 Jun 2010

This project shows how to build a digital clock using old 7 segment led displays. Design is based on PIC16F887 microcontroller. [via]

7-Segment LED Display Digital Clock - [Link]

17 Jun 2010

LinkM is a USB adapter for programming BlinkM and for controlling multiple BlinkM simultaneusly without the need of an arduino. [via]

LinkM for programming BlinkM - [Link]

6 Jun 2010

In this Instructable user comodore will show us how to make a simple fast blinking LED light that you can attach to your bike or any where you want. It blinks more than 3 times in a second.

How to make a fast blinking LED bike light - [Link]

30 May 2010

This tutorial shows you how to expand IO ports using daisy chained shift registers. i.e. control 16 LEDs with 3 control lines.

Introduction to 74HC595 shift register – Controlling 16 LEDs - [Link]


24 May 2010

In this video learn about LED history, how a LED works and how to make your own using a piece of crystal!

MAKE presents: The LED - [Link]

23 May 2010

This is a novel flasher circuit using a single driver transistor that takes its flash-rate from a flashing LED. The flasher in the photo is 3mm. An ordinary LED will not work. The flash rate cannot be altered by the brightness of the high-bright white LED can be adjusted by altering the 1k resistor across the 100u electrolytic to 4k7 or 10k.

Super Bright Led Flasher - [Link]

22 May 2010

This project is a 8×16 LED pixel array controlled by ATtiny861 microcontroller. It’s cappable to display various images and schemes . There is total 128 LEDs controlled by mcu which is running at 20MHz. Check construction details on the link below. [via]

ATtiny861 Christmas LED Display shows images - [Link]

21 May 2010

While SMT leds typically have a dot or small green line indicating their cathode, it can be hard to remember.  A quick way to test a LED is by touching the ends with a multimeter….. read more on the link below.

Use Multimeter Beep to Find SMT LED Polarity - [Link]

20 Apr 2010

There is a survey running on softwareadvice.com about LED vs fluorescent tubes. Specifically, if LED tubes are ready for widespread commercial use, and if they will replace fluorescent tubes. Read this very nice article and participate on the link below.

Are LED Fluorescent Tubes Ready for Prime Time? - [Link]

14 Apr 2010

This project is an RGB led controller based on Microchip PIC18F2550. Color change can be depended on temperature or CPU load, or screen. Controller board communicates via USB with setup application that helps change the color of leds. Schematic, code snd PCBs are available on the link below.

Full Color USB LED-Controller - [Link]



 
 
 

 

 

 

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