A system made with two inexpensive sensors proves to be more accurate than smartwatches for measuring calories burned during activity – and the instructions for making the system yourself are available for free online.

Calorie counter component information: https://www.nature.com/articles/s4146...
Code: https://github.com/pslade2/EnergyExpe...

Read the story: https://news.stanford.edu/2021/07/13/...
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