Monthly Archives: June 2009

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 →

Posted in Arduino., Electronics. | Tagged , , , , , | 2 Comments

Blocking IPs after breakin attempts with tcpwrapper and fail2ban

Posted on June 24, 2009 by robert

My virtual private server runs fail2ban to block IPs that have tried to gain access to my system by hammering my ssh server. Suspicious IPs get banned for a certain time with a firewall policy using iptables. The un-banning is … Continue reading →

Posted in Server. | Tagged , , , , | 2 Comments

128 = 64 x 2 — Extending to larger matrix displays

Posted on June 20, 2009 by robert

I haven’t had the nerve to test if my 8×8 PWM code could cope with a double sized matrix, but it turns out someone else has already had fun doing that. Have a look at dirk’s blog for more information. … Continue reading →

Posted in Arduino., Electronics. | Tagged , , , , | Leave a comment

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 →

Posted in Arduino., Electronics. | Tagged , , , , , | 12 Comments

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 →

Posted in Arduino., Electronics. | Tagged , , , , | Leave a comment