the blog of a geek physician and mother


Principles of pulse oximetry

Pulse oximetry notes on Scribd gives a clear overview of what you need to buld your own.


Helping horses gallop

Using inertia sensors Andrew Spence has show how the jockey smooths and helps the motion of the racehorse. Watch the movie here.

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DIY pressure sensing

This is a useful component to build for all sorts of projects. For instance, stuck to the seat of ones pants and then recording how equal ones body weight is distributed across the back of your horse.