Novosund has created an ultrasound sensor that allows real-time blood pressure sensing without any cuff hassles. It is ready for smartwatches, and even rings.

The standard, one-size-fits-all blood pressure cuff can drastically distort blood pressure readings taken by automated blood pressure devices, a new study reveals.

I like this one - a super impressive Arduino-based barometer for measuring air pressure. There's something satisfying about the link with nature, a tangible connection with outside weather.