Celebrating one year back in the hobby…

Today marks my one year anniversary of my return to amateur radio. To celebrate, I presented a talk on the Raspberry Pi to our local radio club, the McHenry County Wireless Association. As promised, I am uploading my slide deck, … Read More

Arduino, Raspberrry PI, or any SPI enabled device: Speak Now!

I happened across an interesting Kickstarter project, BIG BUDDY TALKER , an inexpensive way to add natural sounding speech to your next project. It features more than 1000 sounds (visit the Kickstarter to see the current list of words) that … Read More

Raspberry Shake online!

Today, I received my Raspberry Shake (an inexpensive professional grade personal seismograph) that uses a Raspberry Pi for data collection, processing, and uploading data (if you choose to share seismic data with the world).

It took only a few minutes … Read More

Measuring reaction time

For a science fair project, Jeremy wanted to design an experiment to measure the effects of different types of distractions on a person’s reaction time.  In order to accurately measure the time required to respond to a stimulus, two PIC … Read More

Stereo FM Transmitter

My quest was simple: Have the output of my iPod transmit to my car’s FM radio. I tried a number of devices which worked to some degree.  However, either the signal drifted with temperature or the signal was so week … Read More

SuperProbe

When my Radio Shack logic probe gave up the ghost a while back, I took it apart only to discover that the probe consisted of two piggy-backed printed circuit boards and an estimated 20-30 parts. It was time for a … Read More