Adding a battery buffered realtime clock to the Beaglebone Black provides accurate time when no Internet is available. I used an Epson RX8025NB module, and connected it to I2C bus 1. Under Ubuntu 14.04 LTS a set of rtc drivers already exists, and enabling the clock was a simple command. The biggest work was to enable I2C bus 1… Continue reading »


和時計 (wadokei) are mechanical clocks telling the traditional Japanese time. Unlike elsewhere, Japan maintained a unique time system that measured day time from sunrise to sunset and night time from sunset to sunrise, splitting both periods into six units. This system created a real challenge for clockmakers. For one, the six night time units are much… Continue reading »


Weihnachts-Geschenktipp: Ein Beaglebone Black ist das perfekte Geschenk in 2014. Endlich massentauglich, wurde beim Raspberry Pi Konkurenten in der dritten Version (Revision C) der interne Datenspeicher auf 4 GB hochgesetzt, eine 1GHz CPU macht Dampf, und es wird das vielseitige Debian Wheezy Linux als Betriebssystem ausgeliefert. Damit geht jetzt jede Menge, und auf Anhieb. Was macht man nun damit?… Continue reading »


The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.x). It has more or less the same functionality of the Arduino Duemilanove, but in a different, smaller package. The Nano was designed and is being produced by Gravitech. Drawn and rendered in Cinema 4D.

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