Distance Travelled Telemetry Line.

[BarryCole]

Is there an existing issue for this feature request?

• I have searched the existing issues

Is your feature request related to a problem?

No

Describe the solution you'd like

Is it possible to add a telemetry line to measure "Distance travelled" using GPS speed as the sensor.

Thanks for your help.

Describe alternatives you've considered

Cannot find an alternative.

Additional context

No response

[ParkerEde]

It is not the GPS speed as a sensor. To calculate the “distance traveled”, you need to measure the latitude every second and calculate the distance in between and add it to a variable.

This is the formula:
local lat = math.cos((gpsValuelat3 + gpsValuelat2) / 2 * 0.01745)
local dx = math.abs(111.3 * lat * (gpsValuelon3 - gpsValuelon2))
local dy = math.abs(111.3 * (gpsValuelat3 - gpsValuelat2))
local distancetraveled = math.sqrt(dx * dx + dy * dy) * 1000

To avoid inaccuracies while the model is only standing on the ground, I would recommend that the calculation only takes place when, for example, you have released the motor protection switch and are about to take off.

[BarryCole]

This works, but it would be better if it was made as a propper line for distance, that gave a distance in Meters rather than mAH.
It works and it seems quite accurate.

[mha1]

Here's a LUA function script to do that. It requires a speed sensor (GSpd) and generates a new sensor GTrd (GPS travelled distance). If necessary change line 5 to the name of your GPS speed sensor.

• download GPStrv.lua.txt and remove the .txt extension
• copy GPStrv.lua to the SD Card folder \SCRIPTS\FUNCTIONS
• activate the Lua script using special function Lua Script

• go to model settings / telemetry and discover new sensors

[BarryCole]

Thanks for that, but it would still be better to have it built in to Edge.

[mha1]

You don't have to bloat the firmware for stuff hardly anyone uses if you can easily add it with LUA

[pfeerick]

IMO, using a LUA as Michael demonstrated is the right way to add support for this.

…

On Thu, 26 Sept 2024, 4:40 am Michael, ***@***.***> wrote: You don't have to bloat the firmware for stuff hardly anyone uses if you can easily add it with LUA — Reply to this email directly, view it on GitHub <#5563 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABJ66KLEYK4ZAHU4FVUPA7DZYL7QXAVCNFSM6AAAAABOZ6PTFCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGNZUHA4DMNBYGI> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[BarryCole]

Maybe the reason not many people use it, is because it is not there.

[pfeerick]

More likely, it is because this really something a flight controller would calculate and report itself. Or, if you want to know distance (in a straight line) from yourself) you also may need a GPS in the handset, in order to take in account movement of the handset (if it is not stationary)... There is built-in support for that calculated sensor already.

…

On Thu, 26 Sept 2024, 8:41 am BarryCole, ***@***.***> wrote: Maybe the reason not many people use it, is because it is not there. — Reply to this email directly, view it on GitHub <#5563 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABJ66KISNJYWLPNFWDEMZ73ZYM3YLAVCNFSM6AAAAABOZ6PTFCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGNZVGM4TGOBVGA> . You are receiving this because you commented.Message ID: ***@***.***>

[BarryCole]

Some of you are missing the point. I do not want to know how far away from me the plane is. I want to record how far it has flown, during the day.

[ChrisOhara57]

There is a way to do this with a calculated sensor.
See the link below (but it is a German forum and the tread is four years old).
I've tested it 3 years ago. It does work.

(With OpenTX 2.3.7 I had to change the units of GSpd to [A] or [mA] and I had to use a Ratio of 1.852 because OpenTx worked with [ktns])

First step try this:

https://fpv-community.de/threads/wegstrecke-mit-gps-lazy-carbo-way.85758/

(It's similar to how you calculate the fuel consumption from [A] to [mAh])

[pfeerick]

Some of you are missing the point.

That is quite easy, when you don't say what your intent / use case is, so thank you for elaborating on that. I can put the crystal ball away now ;)

Maybe the reason not many people use it, is because it is not there.

But there are plenty of forum posts, guides and snippets on how to use Lua to add in custom telemetry sensors, etc, so that is not a very good argument for this - as it clearly is there - just not as user friendly as some of the other options.

Given this is basically just another version of the consumption calculated sensor, but with the appropriate units, it should not be that hard to add though.

[ChrisOhara57]

To avoid misunderstandings you should also read under discussions "Distance travelled #5516".