Wahoo ace wind sensor

[stepan]

It would be incredibly useful if you could support importing wind speed data measured by the Wahoo ACE wind sensor

[MedTechCD]

Does it create a FIT or TCX file?

[Miles_Hopkins]

I have bodged together some fields/charts from the sensor. Try and find these in the public lists:
Custom field

Custom stream

Both take the wind (I think it comes in as cm/s), compare it to the ground speed at that time, then calculate what the implied headwind is in km/h. If it’s negative then you have a tailwind obvs.

I’ve not found any other uses for the data yet, but if you look at the fit file, there is a lot of stuff in there -

[david]

You can easily create custom activity streams to pickup those fields. Have a look at the record fields for the fit file for an activity (“Original Fit File” on the activity data tab) on fitfileviewer.com:

It says “mps” in the units but those values look like mps * 1000.

Custom activity streams

Intervals.icu now supports custom activity streams for extracting data from record messages in fit files. Click “Charts” under the activity timeline chart and then “Custom Streams”. [Screenshot 2023-07-19 at 21.16.30] [Screenshot 2023-07-19 at 21.17.04] Click “Add Stream” to create a new stream or search for streams created and shared by other athletes. Note that these streams are per athlete. You can add your own streams to athletes you coach using the search button. [Screenshot 2023-07-…

You will probably need to use some Javascript to convert to actual mps:

Custom activity streams from fit file messages

Custom activity streams now support computing streams from fit file messages (not just record messages) using Javascript. Note that this cannot be used with the simpler “Record Field” streams but the process for creating the stream is the same: Tick the “Processes fit file messages” box and create a script instead of entering a record field name. [Screenshot 2023-08-11 at 07.21.32] This script just grabs the heart_rate data from the record messages: { for (let m of icu.fit.record) { …

[stepan]

Thanks, David! super helpfull, now i have wind speed from device