Author Archive

Homemade Electrocardiograph   Leave a comment

In my sophomore year at Penn State, I built an electrocardiograph out of a PalmPilot as a hobby project. The signal amplification circuit is derived directly from plans at Jason Nguyen’s page. My contribution was to add the analog-to-digital converter and program the PalmPilot interface (as well as putting it all in a nice little enclosure).

  ECG GotThatRhythm

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Posted 20 Mar 2006 by John McManigle in Technical

Staff of Doom   Leave a comment

Back in the day, I would look at web sites written by college kids with too much time on their hands detailing how, using only seven carefully selected RadioShack parts, they had constructed a pet robot, or something like that. Though I am still working towards the skill of those RadioShack patrons of yore, I made a first foray in to that world in the winter of my freshman year of college. What began as a reason to explore Penn State’s Learning Factory and come out with a party prop soon became known as the “Staff of Doom.” Click for the story and pictures!

Posted 31 Jan 2005 by John McManigle in Technical