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 »
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;-)
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 »
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 »
OK, the “Compound Machines” event @ Science Olympiad is a closed event comprised of a written part and a more practical part, where the team needs to use a pre-built “scale” to determine an unknown mass with the help of a known mass. So I don’t have a real video or images of the event.… Read More »
OK, this year, it was the second place for our team in the Maglev event in the San Joaquin County competition. I only saw the runs of our vehicle and there the problem was, that it was way too fast. The target time was set at 12 seconds. The successful runs were around 3.7 seconds:-(… Read More »
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 »
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 »
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 »
My never ending story with Tomcat and logging. The previous posts are here and here. This version has two updates. Tomcat was still sending the System.out and System.err streams to the shell and eventually to catalina.out in the normal configuration. The jar file now contains a life cycle listener which can be used to redirect… Read More »