Last Updated on June 4, 2022 by pg@petergamma.org
The Polar OH1 sensor is very comforable to wear. All the same, an Australian paper said, it is so accurate that it can be used instead of an ECG device:
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0217288
There is a Polar Sensor Logger app with MQTT which should allow to connect it to Home Assistant. We tried it once, but I failed. Maybe someone more skilled and more patience than us manages to connect the sensor to HA.
We went through the Integrations of Home Assistant ant came accross the USB Thermometer Temper, which is great. We reviewed some aspects of it in this blog here:
There are Youtube videos for the TEMPer1F available how to collect sensor data on an Android phone and on a Linux PC.
Does this sensor have an SDK? If so, it is really great. There is a big advantage of a sensor which can be easily connected to an Android Phone or a Linux PC, compared to other sensors, which do not allow this, for instance the Firstbeat Body Guard sensor:
In contrast to the Firstbeat sensor, for Polar sensors, an SDK is available. An integration into Home Assisant would be highly desirable.
We know from our own little experience, how helpful it can be to have your heart rate on a PC or TV screen, especially if you are stressed and cannot let go. Just watch your heart rate on the screen and wait until it trops.
Instruction how to create an ECG Data Stream with Polar device can be found here:
Eventually, heart rate calculation is necessary with for instance HeartPy:
https://python-heart-rate-analysis-toolkit.readthedocs.io/en/latest/