OpenSprinker Pi – Hardware Complete

By | April 30, 2014

I was thinking about a more flexible sprinkler controller for a very long time. We have circuits which would benefit from different patterns, from the normal lawn watering to drip circuits for some flower/veggie beds to some pots and even some soaker-hoses for trees. When I saw Daniel’s setup @ Garden Automation, I knew that… Read More »

UNI-T UT61E and Linux

By | April 28, 2014

For a long time, I was working with a very cheap multimeter, that I picked up somewhere at a sale. But I decided, it is time to upgrade to a bit better tool;-) Of course, when you look at electronics testing/measuring equipment, everybody knows about Fluke. But for me this is just a hobby, so… Read More »

Lunar Eclipse – April 2014

By | April 15, 2014

Just some photos from last night’s lunar eclipse. I was mostly lucky, the high clouds did not materialize as much as feared;-) I did only stay up until about the peak of the eclipse. That was long enough for me;-)

ArduinoDay 2014 – We had a good Time

By | March 31, 2014

   OK, nobody knew what to expect for our Arduino Day event. But about 20 makers had a good time @ Robot Garden😉 Most knew their way around. But we also had a couple of kids who were new to the idea of `hardware hacking’ and liked the idea of an easy start. So instead… Read More »

Arduino Day 2014 @ Robot Garden, Livermore

By | March 19, 2014

We will have our own event @ Robot Garden in Livermore, CA to celebrate the 10th Birthday of Arduino – The little computer that can;-) I brought it up, so naturally, I got to organize the event;-) More information is available at the meetup page for the event. I hope, we will have some interesting… Read More »

SVLUG presentation on little Single Board Computers

By | March 6, 2014

Last night Paul Zander, Bob Smith, and I gave a presentation/demo for the Silicon Valley Linux Users Group on little computers ranging from Arduino to Raspberry Pi and friends. I believe the audience had a good time and we had interesting discussions afterwards. My slides are here SBC_SVLUG_mw (PDF)and most of my demos are described… Read More »

Robotis CM-900 and Pololu MinIMU-9

By | January 11, 2014

I played with the Robotis CM-900 and the little MinIMU board before. But so far, I always used the Arduino libraries directly from Pololu. One example was my little teddy seat😉 This time around, I decided to take the Arduino out of the equation and and let the CM-900 do the I2C communication with the… Read More »

Function tracing for an embedded System via LogicAnalyzer

By | October 16, 2013

OK, I’m trying to play with some embedded systems once in a while. This time around I was trying to implement a relatively fast (1000000Baud) asynchronous serial connection with an Arduino Micro. The Micro is running at 16MHz, so that connection gets close to what should be possible. I implemented my protocol handler and it… Read More »