Category Archives: Uncategorized

Beaglebot – A BeagleBoard based robot

Posted on January 3, 2012 by bengalvin

Over the last 6 months or so I’ve been working on a BeagleBoard based robot. The motivation for this was to build a general robotics platform to try out some ideas I have on Simultaneous Localization and Mapping (SLAM) and robust sensor … Continue reading →

Posted in BeagleBoard, Electronics, I2C, Linux, Microcontrollers, Uncategorized | Tagged , , , , , | 23 Comments

Changing the BeagleBoard I2C Bus Frequency

Posted on November 6, 2011 by bengalvin

The stock kernel runs the I2C bus exposed on the BeagleBoard’s expansion header (bus 2) at 400KHz  (‘Fast’ mode). This is fine for most I2C slaves, however it seems to be too fast for slaves running on ATTiny and ATMega … Continue reading →

Posted in BeagleBoard, I2C, Microcontrollers, Uncategorized | Tagged , , , | 1 Comment

Switched Mode Power Supply for the BeagleBoard

Posted on July 24, 2011 by bengalvin

I had a couple of options to consider when creating a power supply for my BeagleBoard based robot: a simple linear voltage regulator (eg the LM7805) or a fancy switched mode power supply. Normally I’d go straight for the linear … Continue reading →

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