This project is 64 pixel RGB LED display able to show interactive animation. The project uses a potentiometer, a led matrix, electronics and custom code. No further documentation is available.
Animation on a 64-pixel RGB LED display – [Link]
Brad @ bradsprojects.com shows us how to use 8 RGB LEDs to make a POV display. To produce the display image hex code he uses an excel spreadsheet and then he programs the HEX code to the PIC. The display data is stored on an EPROM that allows to store large messages. Check the video above. [via]
8×85 Pixel RGB LED POV Display – [Link]
This project is a keyboard light using 5 RGB Leds based on ATMega328 and Arduino clone platform. The device is communicating with the PC using serial port connection to set the desired color. The color mixing is done using PWM control of leds and 2907A transistors. Check the project on the link below.
Arduino Clone Powered RGB Light – [Link]
This tutorial shows how to use a RGB LED Strip to make it fade through the rainbow colors. It talks about the analog and digital type of LED strips but the tutorial uses the analog type to demonstrate their use. It shows how to solder them, how to use a transistor to drive the LEDs and how to produce PWM signal using an Arduino. Check it out on the link below.
RGB LED Strip Tutorial – [Link]
This project shows how to build a LED holiday tree using a custom made circuit board. The circuit board is made using a Dremel rotary tool and doesn’t require any etching chemicals. You use the Dremel tool to cut a copper into a tree shape and route the two separate PCB sections that will power the LEDs. The LEDs and resistors will be soldered at the surface of the board. The result is pretty nice. Check the construction PDF on the link below.
DIY custom circuit board holiday tree – [Link]
ladyada.net has write a new article on how to use LEDs for people making their first steps on electronics. It talks about LED polarity, the various kinds of LEDs, what are LEDs used for, changing the brightness with resistors, changing the brightness with voltage, learn how to calculate the current limiting resistor etc.
How to use LEDs introduction- [Link]
This project shows how to build your own LED ring light. “Alan” bought a stereo microscope from ebay and wanted a powerful light source, so he machined one using a lathe. The light ring comprise of SMD LEDs and a block of lexan. He machined it to include slots for the LEDs as well as the microscope mount. Check photos and construction details on the link below.
Make your own Ring Light – [Link]
This article discuss about the 555 timer IC. It talks about the history of it, the modes of operation (Monostable, Astable and Bistable), the pinout etc. It also introduces a LED blinker circuit to show it in operation.
555 Timer IC – [Link]
This project is a LED speedometer based on LM2917 frequency to voltage converter. It has a fixed sensor over a rotating toothed ferrous wheel. As the teeth pass by the sensor, up & down electrical impulses are generated, as the speed increases, the frequency goes up too. Then the frequency is converted to voltage using LM2917 and that voltage will drive 30 LEDs through 3x LM3914 ICs.
LED Speedometer – [Link]