This project is a LED matrix display able to display news headlines on scrolling format. The main board features a Microchip PIC18F2525 microcontroller connected to a WIZnet WIZ810MJ Ethernet module, which uses the W5100 to provide an easy-to-use interface to the Internet.
LED News Ticker – [Link]
This project is a big LED matrix controlled by Arduino board and build inside an IKEA table.
The displays are connected to the Arduino to share the row select pins (A,B,C and D) and the control lines EN, CLK & LATCH. The serial lines R1,R2,G1,G2 have their dedicated pins. So there are 19 pins needed out of possible 20 (not counting the reset pins as I/O). As the displays are loaded in 16 rows a 64bit some transformation has to be done while loading the display.
LED matrix Arduino IKEA Coffee table hack - [Link]
The device comprises two parts: LED control board and LED display board. The two PCBs are designed to fit together one behind the other using two sets of dual row connectors and 4 spacers. One of this connector is used for the electrical connections, while the other is only used as a mechanical connecting element.
Dot matrix LED running display - [Link]
This project shows how to build a Digital clock with 32×8 LED matrix display based on ATmega168 microcontroller. It doesn’t use a RTC timer chip but timer interrupt triggered via external crystal at 32.678kHz. It allows generating exact 1sec intervals while AVR is running with internal system clock at 8MHz.
Digital clock with 32×8 LED matrix display - [Link]
This project is a simple little box that makes wiring up an 8 x 8 LED Matrix easy. It uses the MAX7219 (or 7221) LED driver chip from Maxim and uses the Matrix library in the Arduino library.
8 x 8 LED Matrix in acrylic - [Link]
Lately I was playing with my dual color LED matrix from Sparkfun. It is a matrix of 8 by 8 dual color (red and green) LEDs that measures 5 cm by 5 cm. I just had some sprites flickering across the matrix as the magnifying glass of my “third hand” came in the way. I realized, that, if in the right distance, it will project the sprites on the ceiling. Although the projection is not very bright, it works, if the room is dark enough. Disco, here I come.
LED matrix projector – [Link]
If my flashlight business card isn’t advanced enough for you, then how about one with a full graphical display on it that can be customised for a number of scrolling messages? This one could be made in quantity for about a $5 parts cost, and it is only a little bit more expensive if you are making just a few. I won’t kid you that this is an easy design to make – don’t try it unless you have very good soldering skills and some experience in electronics. Some of the components here are smaller than grains of rice, so it would be useful to have good eyesight as well! Like the flashlight card, it is more of a proof of concept than something you can churn out in quantity, but it might at least give you an idea of what can be achieved, and where business cards might be in just a few years time.
Dot Matrix Business Card – [Link]
Here is an experiment with an 8×8 LED matrix, driven by a MAX7219 IC, controlled through an Arduino micro-controller board. A custom PCB has been made by Tan from DinoTech to tidy up all the wires connecting the LED matrix and the IC. It comes with a separate 12V power supply, in order not to drain everything from the Arduino board. [via]
Arduino with 8×8 LED Matrix - [Link]
Jon Bennett writes:As a personal project in grade 12, I decided to build an LED Matrix and write the software to control it. I was able to submit the software for my grade 12 computer science final project, so that worked out well. When I first started looking into how to do this, I wanted to control every light individually. Since the parallel port has less than 12 outputs, additional electronics would be required to control more than 12 LEDs (light emitting diodes, tiny light bulbs). [via]
LED Matrix Computer Controlled - [Link]