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]
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]
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]
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]
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]