Frsky High precision Vario drifting

openTx has introduced a range of new features, ideas and bling. It is fast becoming the firmware of choice for many users. openTx will run on ALL current hardware platforms, including the gruvin9x and sky9x boards. Work has already started to support the new FrSky X9D radio!
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jtroutt19
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Frsky High precision Vario drifting

Post by jtroutt19 »

Hey guys so I installed this sensor about 3 weeks ago in my heli and I have an issue with it where the altitude slowly increases. This happens while the heli is just sitting. Rotor isn't spinning nothing just sitting there. It will start around 0 and just slowly drift upwards. For instance right now Ive had it on for about 4 minutes and its at 14 ft right now. What is causing this and how do I stop this. I am eventually going to set up Hard Deck on my heli so I need this working. Thanks for any help you can give! Thank you!

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Kilrah
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Re: Frsky High precision Vario drifting

Post by Kilrah »

Either temperature (sensor heats up) or normal air pressure variations.

You'll never have perfectly stable readings down to much more than that with a barometer.
Carbo
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Re: Frsky High precision Vario drifting

Post by Carbo »

With https://github.com/openXsensor/openXsensor (DIY-Vario) there is a chance to reduce the temperature induced altitude drift. Please find attached mstrens explanation (part of openXsensor_config_description.h).
ABBC3_SPOILER_SHOW
jtroutt19
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Re: Frsky High precision Vario drifting

Post by jtroutt19 »

Carbo! Thank you for that. Although I get so confused when it comes to github I am not sure how to use it. I need a tutorial. Also I would not be sure how to do what your post is describing with the frsky sensor. What your post is talking about is DIY arduino sensors correct?
Carbo
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Re: Frsky High precision Vario drifting

Post by Carbo »

Yes correct, there is some learning curve with openXsensor. If you need it only once, it is eventually better, to ask someone near you for help. There are some users worldwide and diyers are always helpful.

jtroutt19
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Re: Frsky High precision Vario drifting

Post by jtroutt19 »

I want to learn it. I got people I could help with it once I learn plus I am going to need for other models. That being said I have built arduino things before. Not familiar with coding though. I build then upload code that is already done. But github is like french to me. I dont know how it works.
Carbo
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Re: Frsky High precision Vario drifting

Post by Carbo »

jtroutt19 wrote: Wed Apr 05, 2017 6:42 pmThat being said I have built arduino things before. Not familiar with coding though. I build then upload code that is already done. But github is like french to me. I dont know how it works.
Welcome to openXsensor. You do not need to learn coding or github. Just press the green download button on the github site and you will get a zip-file with everything you need. Nearly ready to upload, only some configuration to do. There is also a link to the openxvario board here, where you get help. Do not hesitate to make a new thread there for your project.

openXsensor_config_description.h has all informations, but it is huge ;)

Building it: https://github.com/openXsensor/openXsen ... uild_Vario
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jhsa
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Re: Frsky High precision Vario drifting

Post by jhsa »

The problem with oXs, is that it lacks information on the github page :(
I couldn't do any documentation on some of the aspects because I never built them. For example airspeed and compensated vario, I know very little about building it.
If a bunch of people joined together and each did a little bit, maybe we could put a little manual together. For example, I also never used the S.port as I have only HUB gear.

João
My er9x/Ersky9x/eepskye Video Tutorials
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Carbo
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Re: Frsky High precision Vario drifting

Post by Carbo »

The information is there, but very hard to find, because scattered all over a lot of places.

I am willing to help documenting oXs on the github page, but first we (we = mstrens ;)) need the TX GPS compass to run :D
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jhsa
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Re: Frsky High precision Vario drifting

Post by jhsa »

I am experimenting with a capacitive sensor (arduino + a resistor + aluminum foil) for detecting fuel inside a tank in my models, without having electricity passing through it. If made to work reliably, it should safely detect the right amount of fuel inside the tank, even if the model is not level. When I have some positive results I will post in the forum and ask if it would be possible to add it to oXs :)

João
My er9x/Ersky9x/eepskye Video Tutorials
https://www.youtube.com/playlist?list=PL5uJhoD7sAKidZmkhMpYpp_qcuIqJXhb9

Donate to Er9x/Ersky9x:
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