With the web API, you can only pull data at rest, meaning you'll need to sync your Sense to the Fitbit app before you can fetch the data. The endpoint you'd use to fetch this data is the Intraday Heart Rate Time Series endpoints. If you'd like to test this endpoint, you can do it with the Fitbit API Explorer.    If you're looking to fetch real-time/raw data with 1sec detail level, you'll want to use the Device API and SDK to create a clock face. You can get further assistance from other developers and our moderators in the SDK forum here.

You could use our algorithm and any PPG/ECG sensors to get the raw data .Ours can clean up noisy signals and gives you raw PPG/ECG data

Wearable sensor management Controls and tracks accelerometer for movement and ECG/PPG for heart rate measurements.

Heart Rate Monitor LED Green Sensor The Heart Rate Monitor (HRM) LED green sensor measures the amount of green light that is reflected back from a person's blood vessel. The following table lists the measurement data that the HRM LED green sensor provides.

Wear OS is a smartwatch operating system created and maintained by Google. It was announced on March 18, 2014 as Android Wear, only to be rebranded as Wear OS on March 15, 2018. Wear OS is an Android-based operating system that receives semi-regular feature and security updates, just like the version of Android that powers billions of smartphones around the world.

The data is queried directly from your Fitbit account and inserted into Google Fit. To do this, you must first log in with your Fitbit account and give FitToFit access to the data that you want to transfer. You will then be asked to connect to your Google account, into which the data from Fitbit should be inserted.

The Google Fit APIs for Android are part of Google Play services. The Google Fit APIs are supported on Android 4.1 (API level 16) and higher. Using these APIs, your app can do the following: Read near-real-time and historic data, including data from Bluetooth Low Energy (BLE) devices. Record activities. Associate data with a session. Set fitness goals.

Sensors API

As mentioned before, sensors such as the Empatica provide some raw data (E.g. raw PPG), although the cost is very high (around $ 1700 US). Moreover, smartwatches such as the Moto360 or the LG G Watch R can be programmed to provide HR data. However, you should consider that this is preprocessed data (from manufacturers) and we just have access to the processed data (not the raw PPG). Therefore, if you wanted to make things such as Heart Rate Variability analysis, this approach is not highly accurate. I have been working with the Polar Chest Band (H7) and it seems that we can access both HR and RR-interval data with an Android app (currently working in an APK to extend it in our PhysioVR framework).

How to download all of your raw fitbit data

Access raw sensor databookmark_border Table of contentsList available data sourcesAdd a listenerRemove a listener The Sensors API lets you read raw sensor data in your app in real time. Use this API to do the following: List data sources that are available on the device and on companion devices. Register listeners to receive raw sensor data. Unregister listeners so that they no longer receive raw sensor data.

The PPG data were collected with Huawei Watch 2

Depends on vendor, it would be possible to access the raw ppg signal of wear os sensor, should you have access to sensor hardware driver. Some researchers did analysed PPG raw signal from Huawei watch 2 and here is the paper.

Each Fitbit device includes a variety of hardware sensors that have been exposed through our Sensor APIs.

Unfortunately this is not available via an API at this time.

Use Samsung's SDK and it will give you the raw values (values range from 0 to ~64600 if I remember correctly).

This is a simple application I slapped together for the heart rate data that I captured here from the Apple Watch.

Third party apps do not have direct access to the heart rate sensor.

In accordance with Appleʼs approval of the study

Retrieve data and derived metrics from an iPhone’s sensors, or from a paired Apple Watch.

onWristA value that indicates whether the watch is on the user’s wrist.

The sensors an app can read.

You can use HealthKit and have your app request access to the Blood Oxygen data (HKQuantityTypeIdentifierOxygenSaturation)You can find out more about the HealthKit framework here: https://developer.apple.com/documentation/healthkit

as far as I know there is no way to access the raw PPG from the watch

A Flutter plugin to access the PPG sensor.

7 This answer is not useful Show activity on this post. I spent some time figuring out if it's feasible to get the raw PPG signal from android API, and contrary to what some may say, it is definitely possible to do that. And here is how to do it: