"Train" and register data with 2 powermeters, help needed

[SlinBin]

I wish to compare a PowerTap P1 power-data with Kickr snap power-data, I can accomplish this by riding the Kickr controlled by Golden Cheetah over FE-C and just register the Powertap on another device, then export to Excel for comparison. Is the any other way to this all in GC ?

Ive read about something called "alternative" power in train mode, but can not find this. neither is it very clear how the "add device wizard" works, generally and when I add more devices.

What I wish for is two columns of power-data (one for each device) and both devices showing on graphs.

I would appreciate very much if anybody could point me into the right direction (or just tell me to wish for different things :-)

N

(should I have asked in the developer forum, I did not as I would not dare to disturb the important work going on over there)

[SlinBin]

After a day of test I have found that the best solution is to track with to sets of devices (power-meter and logger), then synchronize and compare in either GC or spreadsheet

GC I do get GC to show the "alternate power" during e "train" but to save it......

Another option was to run two instances of GC and train on one with one set of devices and the other with the other set, then export from one athlete to the other and use the "compare" pane, it mostly worked but somehow the Power-tap would not send data in this mode (or the ANT+ USB2 would not recieve it), everything else worked.

Im properly fine (not happy) with the first solution, but might give it another test with the two instances of GC, having one using ANT+ radio only and the other Bluetooth  

[Juan Medina]

Good morning, it's been a long time since you made this query and now I find myself with the same problem. Please, which solution is currently used to separate the readings of one potentiometer from another (I have in mtb and on the road and the readings are not equivalent). THANK YOU IN ADVANCE AND GREETINGS.

[Peret]

I have been dealing with a similar issue: I am testing a pedal power meter (PM A), comparing it with the embedded software power meter of the indoor bike (PM B).

Usually, GC uses data sent by PM B as 'Power', as long with the rest of data (cadence).

I added a new device to GC train, ANT+ and FE-C one, that pairs with both ant+ real devices (PM A and PMB).

The train registers correctly figures sent by both devices: as 'Power' and 'Alternate_Power' telemetries, and they are seeing during the workout.

I cannot distinguish which of them is the data coming from the pedal and whic the date coming from the indoor bike.

What I can confirm is that Alternate_Power is not registered as a column data in the activity.

Having a look at the code, it does not seem that easy to add the column to the output file (actually, it would be easy, I guess, but the implications of modifying the structure of that file are unknown by me, so I decided not to change anything)

[Ale Martinez]

Currently there is no general support for more than one power meter in GoldenCheetah Train.

Alternative power seems to has been introduced for a special case, see https://github.com/GoldenCheetah/GoldenCheetah/issues/239

It is supported only over Ant+, the first channel configured as power sensor or fe-c goes to watts and the second to altwatts, IIRC.

[Ale Martinez]

El jueves, 6 de octubre de 2016 a la(s) 13:34:14 UTC-3, SlinBin escribió:

After a day of test I have found that the best solution is to track with to sets of devices (power-meter and logger), then synchronize and compare in either GC or spreadsheet

Agree, currently this is the best way to compare 2 power sources using GC Train, and considering it would be a rare case to have a power meter without a head unit, it doesn’t seem too limiting.