When paired to an hDrop hydration sensor, your ELEMNT computer is able to present two real-time data values while in ride
- Cumulative Fluid Loss (milliliters)
- Cumulative Sodium Loss (milligrams)
Cumulative Fluid Loss and Sodium Loss for the ride is also recorded in the FIT file.
There is no post-ride data visualization of sweat data on an ELEMNT computer or in the Wahoo app. The hDrop sensor possesses its own onboard memory to store data and can independently sync data with its app after a ride.
ELEMNT completed ride data can be indirectly synced to your hDrop account for increased context for sweat analysis in the hDrop app by
- Authorizing Apple Health or Android Health Connect in Wahoo app authorized apps AND
- Authorizing a connection of hDrop to Apple Health or Android Health Connect
See Authorize an app partner to sync routes, planned workouts, completed rides, or segments and hDrop Data Integrations for details on how to make the connections.
Requirements
Pre-ride setup
A Bluetooth connection must be made between the hDrop sensor and hDrop app to initiate an activity recording, before disconnecting the sensor from the hDrop app in order for it to be connected to the ELEMNT computer.
In ride
A Bluetooth connection between the ELEMNT computer and the hDrop hydration sensor must be maintained to present data to display on the ELEMNT and be recorded in the FIT file.
Post-ride review
The hDrop sensor must be disconnected from the ELEMNT app and reconnected to the hDrop app to sync data directly to the hDrop app. The ELEMNT will automatically disconnect from the sensor for 15 minutes whenever a ride is ended.
Set up your hDrop sweat sensor
Set up your hDrop hydration sensor with the hDrop app.
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Link your Wahoo app to Apple Health or Android Health Connect and Apple Health/Android Health Connect to the hDrop app to allow for properly contextualized analysis in the hDrop app post-ride.
See Authorize an app partner to sync routes, planned workouts, completed rides, or segments and hDrop Data Integrations for details on how to make those connections.
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Add the Fluid Loss or Sodium Loss data fields to your preferred workout profile(s).
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Wahoo app > Devices tab > computername > Workout profiles > profilename > Pages > pagename > add/replace data field > Sweat analysis > Fluid Loss or Sodium Loss
See Customize workout profiles and pages for ELEMNT ACE, BOLT 3, or ROAM 3 for more details.
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Ensure the ELEMNT is connected to the Wahoo app to sync any data field changes.
Awaken the hDrop sensor by holding your thumb over the skin contact point on the sensor and selecting it in the upper right corner of the hDrop app.
Start a new Intense / Active activity in the hDrop app.
Select the gear icon in the upper right corner of the hDrop app.
Select Connect to External Device in the hDrop app.
Select Use with External Device in the hDrop app.
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Pair your hDrop sensor with the ELEMNT computer.
ELEMNT > Ready To Ride > Pair Sensor
ELEMNT > Settings > Sensors > Pair Sensor
Wear the hDrop sensor according to its placement guidelines and confirm it shows as connected on the ELEMNT and the selected data fields are showing data.
Use and when ride is complete/saved, turn off ELEMNT or unpair hDrop sensor.*
Re-open hDrop app and select Use with hDrop App.
*The hDrop sensor can only connect to one device via Bluetooth at a time. In order to transmit data from the sensor to the hDrop app, you must break the Bluetooth connection between the ELEMNT and hDrop sensor, either by turning off the computer, or unpairing the sensor from the computer.
Use your hDrop sweat sensor
Before a ride
Awaken the hDrop sensor by holding your thumb over the skin contact point on the sensor and selecting it in the upper right corner of the hDrop app.
Start a new Intense / Active activity in the hDrop app.
Select the gear icon in the upper right corner of the hDrop app.
Select Connect to External Device in the hDrop app.
Select Use with External Device in the hDrop app.
Turn on your ELEMNT computer. Your hDrop sensor should connect automatically (provided you have completed the steps above.
Wear the hDrop sensor according to its placement guidelines and confirm it shows as connected on the ELEMNT and the selected data fields are showing data.
During a ride
Data is processed by the sensor on three minute intervals, so Fluid Loss and Sodium Loss data will appear after ~3 minutes and update on ~ 3 minute intervals thereafter.
Data values are only recorded to the FIT file while the computer is un-paused. Data transmitted during a pause will not be recorded to the FIT file.
Fluid Loss will present your cumulative fluid loss in milliliters to that point in the ride on a white background.
Sodium Loss will present your cumulative sodium loss in milligrams to that point in the ride on a white background.
After a ride
There is currently no post-ride data on ELEMNT or in Wahoo app for hydration or sweat analysis.
Aggregated Fluid Loss and Sodium Loss for the ride is recorded in the FIT file.
The hDrop possesses its own onboard memory to store hydration data and can independently sync data with its app after a ride.
When ride is complete/saved, the ELEMNT will automatically disconnect from the hDrop sensor for 15 minutes to allow you to manually reconnect the hDrop sensor with it’s app for data syncing, without requiring you to forget/unpair the sensor.
Note: This 15 minute disconnection can be overridden by accessing the hDrop’s sensor details page and selecting Connect.
Re-open hDrop app and select Use with hDrop App, to reconnect.
Sync hDrop sensor with hDrop app.
FIT files of rides completed on ELEMNT can also be indirectly synced to your hDrop account for increased context for sweat analysis in the hDrop app by
authorizing Apple Health or Android Health Connect in Wahoo app Authorized apps AND
authorizing a connection of hDrop to Apple Health or Android Health Connect
See Authorize an app partner to sync routes, planned workouts, completed rides, or segments and hDrop Data Integrations for details on how to make the connections.
Syncing your ELEMNT ride data is NOT required for hydration data analysis in the hDrop app.
Ensure your ride has been synced to the Wahoo Cloud from your ELEMNT via the Wahoo app or direct via Wi-Fi. Your ride should automatically share from Wahoo > Apple Health/Android Health Connect > hDrop, but if it does not, you can manually trigger a sync to from Wahoo > Apple Health or Android Health Connect via the Sharing panel of the ride’s Activity Details page in the Wahoo app (History > activity > Activity Details > … > Sharing > Apple Health / Health Connect > Share.
Notes
hDrop is BTLE only, NOT BTLE multi-peripheral
Fluid Loss and Sodium Loss are calculated on 3 min intervals.
The hDrop sensor will timeout connections within 60 seconds when no activity is in progress and within 60 mins of sensing user inactivity.
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The hDrop sensor can only connect to one device via Bluetooth at a time.
You must connect sensor to the hDrop app > start recording > disconnect hDrop app > connect ELEMNT > start ride > ride > end ride > ELEMNT auto-disconnects for 15 minutes > connect hDrop app > sync sensor data to hDrop app. See Sensor management immediately below.
Sensor management
In order to transmit data from the sensor to the hDrop app, you must connect to the app, initiate data recording in the app, then break the Bluetooth connection between the hDrop app and hDrop sensor in order for the ELEMNT to connect to the hDrop sensor and display/record data during a ride.
In the case that you forget to start the recording in the app before your ELEMNT connects to the hDrop sensor, you can temporarily disconnect the sensor by accessing its sensor details page and selecting Disconnect. You can then complete the app’s start recording process, and then select Connect to reconnect the sensor.
Once a ride is completed, you must break the connection between the ELEMNT and the hDrop sensor in order to be able to sync your hydration data from the hDrop sensor to the hDrop app. To assist with this process, the ELEMNT computer will automatically disconnect from the hDrop sensor for 15 minutes after a ride is ended. You can then manually reconnect the hDrop sensor to the hDrop app and sync your data.
If you have to end a ride before you intended to do so, you can override this 15 minute temporary disconnection by accessing the hDrop’s sensor details page and selecting Connect.
Troubleshooting
hDrop sensor doesn’t pair
Ensure that the hDrop sensor is awake and pairs to its own app.
Ensure that the hDrop sensor is no longer connected to its own app, but that the app registers an activity being recorded.
Ensure your ELEMNT firmware and Wahoo app are up to date.
Restart your ELEMNT computer and re-attempt the pairing.
Fluid Loss or Sodium Loss does not appear as an available data field in the Wahoo app.
Ensure your ELEMNT firmware and Wahoo app are up to date on versions 302533 and 6.86.0 respectively.
Force close the app and power cycle the computer.
Sweat data fields don’t appear on the data screen
Ensure you’ve selected the correct Workout Profile. Data fields are customized for each workout profile separately.
Sweat data fields show no data during a ride
Confirm the hDrop sensor is powered on, paired with the ELEMNT, and worn correctly (on back of upper arm or on chest strap as far forward as possible without sitting on HRM electrode contact pads.
Check the Sensors menu on the ELEMNT to verify the hDrop shows as connected. If the sensor recently disconnected, forget and re-pair.