VivoPower - Power meter reading for VivoActive

Hi,

Tried it last night with a Stages power meter. The cadence and power values were showing and seemed to be correct, although they switched back to zero every few seconds. The other fields don't apply to this left-only power meter I think.
I did not try calibrating the meter and I could not read any messages while cycling, they were just too small (my eyes aren't great). I might try putting it in a trainer.

I'm really interested in this project. What I'm looking for is a backup recording option for my rides. My primary device is a Garmin 800, but every so often something goes wrong with that. I'm less intere

Nol

vinopower with kickr and powertap p1 pedals

With both Kickr and PowerTap P1 the vinopower app was able to pair but the displaying of data was troublesome. I would see correct power data for less than 1 second, then the values would show 0 for around a second, and then the correct values were shown again.

With kickr power and torque were reported
With power tap pedals cadence, power, balance were displayed.

--Mark

vivopower with kickr and powertapp1 pedals

both kickr and powertap pedals paired. In both cases the power related data would be displayed for <1sec, then drop to 0 for ~1sec, and then display again. The display value -vs- 0 didn't seemed timed with the completion of the pedal strokes so not sure what's going on.

kickr: displayed power and torque. lower text indicated receiving power torque data only

powertap: displayed cadence, power, left right balance. lower text indicated reviving power data only.

--mark

4iiii Precision power meter, left-only. Pretty much as the others, drops to zero, regularly:

Thanks for the input. It seems that there may be an issue with the crank torque --> power calculation. I'll need to see if I can find a power meter that sends that data as mine doesn't.

I thought that it could also be caused by the event count being reset, there is some code that sends zero values when the event count is less than the last event count, I've removed that so I'd be interested to see if the same issue exists.

Regarding the recording of power that doesn't seem possible, you can probably thank Garmin's marketing department for that :(

Joel

Power meter setup and calibration

Hi
I have a Vivoactive but currently don't have a power meter. Since all my other bike and running kit is Garmin I was looking at the Garmin Vector but note that when integrated with the EDGE series there is a calibration procedure performed by the Edge - are you taking this into consideration?

Also, are you able to record the additional data into Garmin Connect in such a way that it available for analysis?

Robin

Short test of your updated app.

I just tried a very short test of your updated app and I can now see the powerdata all the time and not as before a positive power number followed by a zero and then a positive power number followed by a zero ...

I have not tried to ride with the bike yet using your app, just turned the pedal by hand and applying some resistance to the back wheel with the other hand.

It is a Quarq powermeter.

I have tried another app https://forums.garmin.com/showthread.php?239790-WatchApp-Activity-Recorder by Travis.Vitek and this app do record data into a fit file. Unfortunately this app does not support a powermeter.

I'm not so much into SW development, but maybe it is possible to end up with an app that can actually record and show your powermeter data.

Michael

I have tried another app by Travis.Vitek and this app do record data into a fit file. Unfortunately this app does not support a powermeter.

The ConnectIQ API provides no way to inject data into the FIT file data stream. You could theoretically record that data to some external device (mobile phone, ...) and then merge it into the .FIT file after the fact, but that wouldn't make for a very good user experience.

Travis

Feedback

OK, thank you for clarifying the possible scenarios.
As I understand the different "Recording Apps" are as follows: They can actually "record" data use the build in "record" functionality but may be able to display the live data in various ways.

To recap the different solutions that exsists now are:

I ) The VivoPower-Power-meter-reading App can indeed show powermeter data correct ( I just tried a short bike ride ) but the app. does not use any build in "record" functionality and save normal Vivoactive bike ride data into a *.FIT file.

II) The WatchApp-Activity-Recorder App use the build in "record" functionality and save "Normal Garmin Vivoactive bike ride data" into a *.FIT file. During the ride the "live" values can be displayed in customized ways. No powermeter data can be viewed as "live" data.

III) The ActiveMeter-Activity-Recorder-And-Gauge App can use the build in "record" functionality and save "Normal Garmin Vivoactive bike ride data" into a *.FIT file and it should be possible to view "live" powermeter data during the ride.

I have tried the last App as well, but so far it does not show the powermeter data correct as the "Watts" are not updating in any predictable way. It does change from time to time, but seems to be "frozen" at a fixed number most of the time.

The image show a "frozen" power value after I stopped riding whereas the displayed heart rate value "follows" the actual heart rate OK.

The link to the III) app is: https://forums.garmin.com/showthread.php?317466-ActiveMeter-Activity-Recorder-and-Gauge