January 17, 2019

This last autumn, I got an email out of the blue from Edmund Vallance, a writer for the Los Angeles times.  He was interested in freediving and had pitched an idea to the Times--he planned to take a class with a local instructor and write about the experience.  He had zero actual freediving experience and so would...

August 12, 2018

Earlier this year I built a custom heart rate monitor to wear when diving.  It's based around a sealed Polar chest strap and a waterproofed Arduino unit with relevant sensors and data logging.  Yes, I know such devices do already exist (ironically a few weeks after I finished my device I picked up a Garmin Descent...

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