Tag Archives: 64-pixels

’64-pixels’ photo group started on Flickr

Posted on July 24, 2009 by robert

To all You LED aficionados out there: I’ve started a new photo group on Flickr aptly called ’64-pixels’. It’s intended to deal with strictly anything having 64 pixels. Currently it is fed by pictures showing the various 8×8 LED matrix … Continue reading →

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Expli.de – electronics competition — my my ;-)

Posted on June 27, 2009 by robert

I’m happily awaiting the prize ;-) Now I’ll finally be able to learn to work with AVRs “the right way” (LOL). For links to the other awarded projects, just click here. “myAVR MK2 USB PLUS” development KIT – kindly sponsored … Continue reading →

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Showing live video on my 64-pixel display

Posted on June 14, 2009 by robert

Hi again! I really can’t believe it myself, but it works just fine ;-) All of this is coded in Perl and is only tested on linux. The program uses these modules, if you don’t have them install from CPAN … Continue reading →

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Interactively controlled animation on a 64-pixel RGB LED display

Posted on June 9, 2009 by robert

OK, enough with this pompous title. I’ll just show how to hook up a normal potentiometer to PORTC, PIN2 of the ATmega168/328 microcontroller and control which image is displayed on the matrix. This pin works as an analog to digital … Continue reading →

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64 Pixels Roundup @ interactive-matter.org

Posted on May 22, 2009 by robert

It seems I’m by far not the only one fascinated by LED matrices. Interactive-matter have put together an overview of 64-pixel projects. Go and have a look :-)

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Displaying images on 8×8 RGB LED displays

Posted on May 20, 2009 by robert

Just a short proof of principle thing, badly coded and terribly slow, but it works :-) Images must be converted to the RAW PPM format using e.g. GIMP. If you think of using ImageMagick and convert: doesn’t work properly ! … Continue reading →

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Using a standard Arduino to program V3 Matrix boards

Posted on April 14, 2009 by robert

A comment by Andy reminded me of the fact that a standard Arduino (non SMD types) comes with the FTDI chip and therefore can be used as a USB to TTL serial programmer too :-) To make it work you … Continue reading →

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V3 prototypes for sale

Posted on April 12, 2009 by robert

Hi, I need to get rid of my V3 prototypes ! I’ve got exactly 3 (all gone) fully assembled and tested boards + RGB LED matrix. So if anybody wants them, “The early bird catches the worm”. I’d be happy … Continue reading →

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Experimenting with the PORTC/D connectors on V3 boards: I²C

Posted on April 4, 2009 by robert

First let’s have a look at the pinout of the connectors labeled as PORTC and PORTD on the V3 boards. “PORTC” : PIN NAME FUNCTION ARDUINO PIN ARDUINO PIN 1 PC0 ADC0 analog IN 0 digital IN/OUT 14 2 PC1 … Continue reading →

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8×8 RGB Matrix V3 + KICAD + SMD — part 2

Posted on March 31, 2009 by robert

Lost in some office, surrounded by clueless clerks, and low on patience… This is my adaption of the famous tag line of Army of Darkness: “Lost in time, surrounded by evil, and low on gas…”, which describes what I’ve been … Continue reading →

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8×8 RGB Matrix V3 + KICAD + SMD — part 1

Posted on February 26, 2009 by robert

Now that I’ve started to work with KICAD, I’ve made the transistion to SMD parts and finally got my switch back. I hade to remove it in V2 as the DIP parts took too much space. The quartz is back … Continue reading →

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8×8 RGB Matrix V2 – KICAD test

Posted on February 24, 2009 by robert

I’ve converted the files to KICAD. Due to size limitations of my project housing (60x60mm), I had to remove one switch which was connected to Arduino pin 7. All code that uses “__button” should be removed. The remaining one is … Continue reading →

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Meggy Jr RGB made it into German newspapers

Posted on December 18, 2008 by robert

So our media have finally seen the light. Geeks don’t want XBoxes for christmas, but something that’s fun making it. Meggy Jr RGB KITs are available at Evilmadscientist.com starting at about 50€. You can also get Arduino libraries there to … Continue reading →

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8×8 RGB Matrix — first prototype on perfboard

Posted on September 21, 2008 by robert

I’ve finally managed building a prototype on perfboard. So far I’ve just put on the sockets and a minimal arduino. That’s just the ATmega168, quartz + caps, reset switch, green led, input switch, decoupling caps. Tomorrow (after I wake up … Continue reading →

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8×8 RGB Matrix — 2nd arduino project

Posted on September 8, 2008 by robert

OK, now for something completely different… Some RGB LED matrix effects – Code: matrix_code.pde (This code will not run flawlessly on up-to-date matrix boards without modification. Please only use this code, unless you exactly know what you’re doing.) So far … Continue reading →

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