Obtain the raw value from the optical heart rate sensor.

Former Member over 4 years ago

Hello community, I am using a Garmin Vívoactive 4 device for my degree thesis but I need to obtain the raw signal of the heart rate, that is, the ppg (photoplethysmography) or optical signal of the sensor, I would greatly appreciate if you could recommend some way to do it.

jim_m_58 over 4 years ago

In CIQ, the best you can get is heart rate and heartBeatIntervals. No access to the lower level data.

You also can't tell if it's coming from the OHR or an external band. (this may be possible in 3.2, and haven't really looked)

Former Member over 4 years ago in reply to jim_m_58

Do you think that it may be possible to obtain the ppg through the communication of the Nordic brand BLE module that the smartwatch has?.

https://developer.garmin.com/connect-iq/core-topics/bluetooth-low-energy/#Using-Nordic-nRF-Connect

Or maybe using ANT + technology?.

jim_m_58 over 4 years ago in reply to Former Member

Nope

Former Member over 4 years ago in reply to jim_m_58

Thanks for your answer jim_m_58, maybe you have requested the Garmin Health SDK, I have been filling out the link form for three months, but they have not given me an answer.

www.garmin.com/.../

7766205 over 3 years ago

Hey! I am also trying to obtain the ppg for my thesis. Did you get it??

6162546 over 2 years ago

I would also like low-level, raw sensor data (e.g. analyze the waveforms) from the watch sensors. Sounds like there are some ANT+ hacks to get external band data, but I'd like to get the watch sensors themselves.