07-20-2020, 11:29 AM
(07-20-2020, 08:53 AM)danielt Wrote: What do you mean by a HRV sensor? In principle both PPG (optical) and ECG (electrical) sensors can be used to measure heart rate variability, although admitedly an ECG would be much more stable during exercise.
Some time ago I did find bosch sensor which would be small and low power, but I think this one I found matches these rules. It's cheap, low power, it checks for pulse and blood oxygen. https://www.banggood.com/MAX30102-Heartb...rehouse=CN