Cycling Watt Power in Locus ( Ant+ BLE or computed)

paweljaracz shared this idea 3 years ago
Collecting votes

Some of Android apps ( strava,ipbike) have possibility to show Power in Watt in Dashboard just like speed , heartrate, cadence etc..


I think many people will be interested to have this possibility in Locus.


Most popular is Power through ANT+ but possible also via BLE (Bluetooth 4.0) or just by mathematical algorythme .


About Algorythme I dont know which alghorytme is the best .

Some of them taking into account speed, cadence, road gradient,weight of cyclist or bike but they are also formulas according to heart rate and calories .

The simplest one Power=1,25*Weight of Rider*9,81 (Speed*road gradient)/ 360


Some interesting sites regarding calculation without sensor https://strava.zendesk.com/entries/20959332-power-calculations

https://strava.zendesk.com/entries/20959272-how-to-get-calculated-power-for-your-rides

http://www.2peak.com/tools/powercalculator.php

http://www.kreuzotter.de/english/espeed.htm

http://sportech.online.fr/sptc_idx.php?pge=spen_esy.html

http://www.braydenwm.com/calburn.htm


It is not so useful on flat becouse for ex. of wind factor but quite good when we climb hills. Last summer my heartrate belt callapse and i have made few ride looking instead at ,,power'' on my Rox 10. And it really help.

I dont think difference with ''real power'' is very big.

Comments (19)

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Hi there,

excellent proposal!

However I believe this needs more structure:

1) is about getting Powersensors/powermeters connected tot he device via ANT+ or BT4.0. Then while tracking is on the power values should be recorded as well and of course there should be an option to sho the current power value in the dashboard as well as avg and max. This all should be straight forward and it were a real enhancement of Locus Pro!

2) is trying to calculate current power values based on various factors. This seems quite complicated and anything else then reliable. It could also be done after excercising by applications like Spoprtstracks, so i would consider this as nice to have


My positive vote is most of all for option 1).

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It should be simple enough to add support for power logging, at least for simple version of it.


Also it would be nice if this could be implemented in the live tracking API. Currently I only know of Ipbike which supports power reading with android!

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According to this blog post that product doesn't exist yet - http://www.dcrainmaker.com/2015/11/limits-meter-really.html although looks nice.

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My proposal is not specific to any powermeter! This propopsal is a generic proposal to complete the recording featureset of locus. Recording GPS together with heartrate and cadence is already implemented. The only missing piece is recording of power data provided over ANT+ or BT.


That's the key of my suggestion!

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Indeed.. There is a pretty comprehensive list about ANT+/BLE power meters here:


https://www.dcrainmaker.com/2016/09/power-meters-buyers-guide2016-edition.html


First ANT+ power meters came on the market in 2009 with SRM Wireless and then others from 2010-2012 onwards. Others have only been able to create their own power meters when SRM's and others patents began expiring.

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Adding Power Meter Support (ANT+ or BLE - better of course both ) is first step but still not enough.


We need data from Power Meter to be saved( recorded) as Fit or Tcx (gpx format doesn't contain Power Meter data)


(from others app

-Orux map read Power Meter from Ant + but doesn't save trainings as Fit ,Tcx .Still only GPX -this format is not usefull in sense of Power Meters

-TwoNav -like Oruxmap (without saved as fit)

-IpBike read and Saved Power Meters correctly ( fit)

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Yes for sure for recording capability.. I'd only really need Locus and ANT+ power for the livetrack feature as there doesn't seem to exist a real live tracker (1s interval). See here: http://help.locusmap.eu/topic/more-data-for-live-tracking#comment-36616

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Hi Guys,

Did you vote in favor of the proposal? If not, pls do so instead of discussing nitty gritty detail about implementation. Locus can already export for instance TCX files so if it records power data it could be exported as well...

Let's focus on convincing Menion that recording power data will improve Locus significantly!

Best regards

Bernhard

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Of course I voted, and even shared this with fellow cyclists ;)

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Is there any chance to implement this feature at least at basic leve?

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Good day Kirill,

support for power meters is planned, unfortunately cannot promise time of realization. I'm little worried that it won't happen this year because of huge amount of partially started tasks. Thanks for understanding.

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If it could motivate your developers - I'd be happy to pay for an add on.

I am interested in display of instant/average over a short interval (say, 10s) and total power. Recording/exporting the data would be cool, but much less important

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Happy new year! :)


I am currently thinking about acquiring a power meter for my road bike. Since many years I am using Locus Maps Pro as a bike computer, at the moment together with a Samsung A3 (2017).


Now, if I get a power meter, of course I want a device that shows and records not only the gps data, but also the amount of power (in Watts) I put into the pedals, together with the cadence (aka pedal frequency) and maybe the heart frequency.


After a ride, I want to import the gps data together with the recorded power meter (and heart rate) data to Strava, as easily as possible.


I know that many fellow riders do this with special sports tracking devices or the Strava app. Some of them are mentioned on the following site. It also explains how to get activity data to Strava:


https://support.strava.com/hc/en-us/articles/223297187-How-to-get-your-Activities-to-Strava


I'd like to get this done with only Locus Maps Pro, and not needing e.g. the Strava app or an additional device.


P.S.: Of course, when a recorded track e.g. has to be cut manually at the end (because I forgot to stop recording before entering the train home), both the gps data and the corresponding biometric data must be cut by the track editor simultaneously.


The following image shows additional track data (i.e. besides gps data) of a recorded activity, as it is presented by Strava.


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This is a support page of Stages, the manufacturer of the powermeter I just bought for my road bike, listing third party Android apps that are compatible with the powermeter:


Third party apps compatible with the Stages Powermeter


I'd like to see Locus Maps in this list in the not too far future. :)

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Things are developing nicely in the cycle power meter area. Have you seen IQSquare? I ordered a pair of these power meters at Indiegogo and expect delivery in Nov 2018 timeframe.


So, Menion, there is still some time until I will hopefully receive my power meters to develop a way to record power measurements in Locus Map together with the GPS track and with HR.

However if there is no such option when I receive the power meters I will be forced to use another app for recording which I would regrett!

Do you see any chance to get something going?

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Good day Bernhard,

nice tool, thanks for sharing. We have some serious plans on rework or our Bluetooth system in Locus and power meter should be part of this improvement. 29 votes in this idea is something, we definitely should not ignore. Some time frame? Hope that during Q1/2019, work should start.

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Hi Menion,

many thanks for your positive and fast response. That sounds good. Just for completeness I suggest not to limit transmission of power data to BT but also allow to record power meter data transmitted via ANT+.

And although your timeline is a bit later that I hoped for I think this is acceptable. If I receive the power meter devices earlier that Locus Map provides the ability to record power meter data, i hope I get not too much used to another app which I will have to use then in the meantime :)

Best regards

Bernhard

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Yeah! Don't forget ANT+ ! It is much more common in power meters, and also exclusive in older ones. (first ones appearing in 2009 with SRM)

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That sounds good. I hope it's not too late when power meter support comes, I really don't want to give up my phone as my cycling computer, but I also need a device that's allowing me to train with power.

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