Frsky telemetry data

Peter · Post by **Peter** » Thu Apr 12, 2012 7:45 pm

Hi, thanks for the great software. Configuration of telemetry data and flight fases are awesome.

Was using er9x, but this is even beter for me.

The only thing I'm missing is Amps data. It was added in frsky protocol 2. Current Amps and max Amps would be great to have.

In the future it would be great to combine voltage and current to power in watt!

Sent from my GT-I9100 using Tapatalk 2

Post by **Romolo** » Thu Apr 12, 2012 8:04 pm

I'm waiting for the sensor to add it....
FrSky announced it for the end of this month...

Peter · Post by **Peter** » Thu Apr 12, 2012 8:47 pm

Ah, thats why it is not in!
I build my own sensorhub using a arduino pro mini and a flytron current sensor.

Sent from my GT-I9100 using Tapatalk 2

nicnet · Post by **nicnet** » Sat Apr 21, 2012 5:51 am

>>I build my own sensorhub using a arduino pro mini and a flytron current sensor

How goes this? I am (or was last year) doing similar, and would like to continue on it ...

Post by **GrootWitbaas** » Tue Apr 24, 2012 11:34 am

please post some details on how what where ...maybe I can finally use them ardunio's for something useful

ReSt · Post by **ReSt** » Tue Apr 24, 2012 1:15 pm

I also have made an Arduino version to get telemetry data onto the radio.

As I made the NMEA version of ER9X that doesn't use the FrSky hardware, my solution is a little bit different. For the NMEA version look at the wiki.

I use the 'normal' NMEA hardware (module of a GPS mouse and two APC200 transceivers for the rf link).

The arduino 'mini Arduino pro' with atmege 328 reads eight analog channels, six digital inputs (switches) and one digital input to count rotations per minute and the gps data

Depending on the program of the arduino:
a) I convert the gps data to the FrSky protocol, add the additional data and display them with the FrSky version of ER9X

b) stream the NMEA records as received from the GPS module and add the additional data in a NMEA like format and display them with the NMEA version of ER9X

I modified both ER9X versions a little bit to show more than basically is supported.

This is what it looks like on my transmitter

: six voltages, RPM and six digital inputs shown on additional screen 5 of NMEA version; NMEAHUB5.JPG (28.48 KiB) Viewed 16034 times

: A1 and A2 voltage, RPM, Altitude (9) and max altitude (13) relative to home altitude (340)

: A1 and A2 voltage with min and max values. Remaining fileds not yet supported

: the 'normal' gps data and six voltages

Code will be in the next post

ReSt · Post by **ReSt** » Tue Apr 24, 2012 1:18 pm

Attachments went wrong.
both of them now in this post

Reinhard

Peter · Post by **Peter** » Tue Apr 24, 2012 3:32 pm

I did almost the same. Reading data from flytron current sensor, sparkfun bmp085 baro and flytron GPS. Converting the data to Frsky protocol and using an rs232 converter to interface with the receiver.
And I also changed the er9x software to setup my telemetry screens.
But using open9x now and that telemetry code is more complex. Looking into it.

Sent from my Galaxy S2 using Tapatalk 2

Post by **Romolo** » Tue Apr 24, 2012 5:25 pm

Next week i hope to implement current sensor.
I suppose that for current apart real time data, only max is needed and not minimum.

Peter · Post by **Peter** » Tue Apr 24, 2012 9:25 pm

Right, only real-time and Max. Would be great, thanks!

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Hyvok · Post by **Hyvok** » Thu May 10, 2012 9:12 am

Can someone explain the telemetry system on the open9x a bit? I'm slightly confused how I should calibrate my channels. Currently I have a voltage divider on the A2 channel (2k and a 22k resistor so divider ratio is 1:12) so a full battery is around 1.05V on the A2 port. How am I supposed to calibrate this? What do I put in the "range" setting?

Post by **Kilrah** » Fri May 11, 2012 7:24 am

If your ratio is 1:12 then you should set "Range" to 12x3.3V=39.6V.
You'll have very low measurement resolution with so much division though. For a 3s battery (what you seem to have) you'd ideally use a 1:4 ratio.

Post by **Rob Thomson** » Fri May 11, 2012 7:51 am

One of the 'new' features in open9x is the display of the voltage on the calibration page.

What I love with this is getting the calibration right is easy.

Measure the voltage on the pack with a meter. Then simply use the calibration to adjust the a1/a2 values till they match!

Rob

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Post by **Kilrah** » Fri May 11, 2012 7:54 am

It isn't in the release version yet though

(current release is r724, feature was added on svn in r734)

Post by **Rob Thomson** » Fri May 11, 2012 8:03 am

Yup... That is why my new was in quotes

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Post by **Romolo** » Fri May 11, 2012 8:16 am

Kilrah wrote:It isn't in the release version yet though
(current release is r724, feature was added on svn in r734)

As you see we do not release from SVN

Post by **Kilrah** » Fri May 11, 2012 8:22 am

Yep saw that, no problem

Was a coincidence that the first few times it WAS the same revision

Reacher10 · Post by **Reacher10** » Sat May 12, 2012 5:09 pm

Maybe I'm just not seeing it but is there a data field that will hold max speed and max altitude acheived in flight?

Thats the only one I can look at and thats once I land.

The custom data screens are great but I can't look at them while in flight...115 mph one foot off the deck, I ain't lookin down at my radio.

Post by **Kilrah** » Sat May 12, 2012 5:13 pm

Max speed and alt are choices on that one custom data screen

Post by **bertrand35** » Sat May 12, 2012 5:17 pm

Yes. While Spd and Alt means Speed and Altitude, Spd+ means Max Speed and Alt+ means max altitude.
As soon as we will have a way to play prompts from the SD-card on the ersky9x you will have the radio telling you your speed. I have it on my v4 with the SOMO-14D, but there is no audio amp and I don't hear it unless I am in my garage

Bertrand.

Post by **MikeB** » Sat May 12, 2012 5:46 pm

Bertrand: Do you know what chip is on the SOMO-14D? Is it a WTV020-sd?
I'm still looking into adding a board, with a WTV020 on it, into the stock radio hardware.

Mike.

Post by **bertrand35** » Sat May 12, 2012 5:58 pm

Oh no! I just closed this radio with all the screws

Let's ask to Cam who has the same than me ... Remember that you will have to add an amplifier!
Bertrand.

Post by **Kilrah** » Sat May 12, 2012 6:06 pm

AFAIK the chip's surface is filed anyway:

But they suggest it is: http://arduino.cc/forum/index.php?topic=78268.0

Post by **ShowMaster** » Sun May 13, 2012 3:31 am

Has anyone else tried the winged shadows how high with open9x?
I select it but it does not work?
Er9x loaded does for me. All latest versions.
SM

Post by **bertrand35** » Sun May 13, 2012 6:28 am

You said it worked with a previous version (except a bad meters/feet conversion). Am I right? It doesn't work at all now?
Bertrand.

maca55 · Post by **maca55** » Fri May 18, 2012 10:07 am

Absolutely loving open9x and have recently modded 9x for telemetry using the "Direct to DHT with no-TTL" method.
It's exciting to be getting so many new features so frequently. Thanks to all developers and their hard work. Updated to 811 today.

I am testing out GPS telemetry on my way to work in the car

I am receiving telemetry fine, but have noticed that my Speed+ value does not store the maximum speed properly.

eg) If I am stationary and zero all values with MENU, then increase speed to 60k it will update the max until around 40k then stops increasing.
Even if I reset the values while at 60k it will still not capture a max anywhere near 60k.

Anyone else seen this issue?

Post by **bertrand35** » Fri May 18, 2012 4:34 pm

I have to check, the speed is received in kts, and converted to km/h, but I think that the max is not converted.
Bertrand.

Reacher10 · Post by **Reacher10** » Fri May 18, 2012 11:49 pm

Reacher10 wrote:Maybe I'm just not seeing it but is there a data field that will hold max speed and max altitude acheived in flight?

Thats the only one I can look at and thats once I land.

maca55 wrote:Absolutely loving open9x and have recently modded 9x for telemetry using the "Direct to DHT with no-TTL" method.
It's exciting to be getting so many new features so frequently. Thanks to all developers and their hard work. Updated to 811 today.

I am testing out GPS telemetry on my way to work in the car I am receiving telemetry fine, but have noticed that my Speed+ value does not store the maximum speed properly.

eg) If I am stationary and zero all values with MENU, then increase speed to 60k it will update the max until around 40k then stops increasing.
Even if I reset the values while at 60k it will still not capture a max anywhere near 60k.

Anyone else seen this issue?

Thats why I asked my original question about max speed. I did set one field for Speed+ thinking that might be for recording max speed and I was correct in my assumption however it didn't record my max speed so then I fugured it wasn't for max speed.

Post by **Kilrah** » Sat May 19, 2012 8:33 am

It IS max speed, but apparently recorded in kt whatever the display unit is chosen (i.e. it's a bug). Bertrand has certainly added that fix to his long list now

maca55 · Post by **maca55** » Sat May 19, 2012 12:52 pm

Ahah! Thanks Bertrand and Kilrah, it makes sense now. I checked the code before posting and couldn't see how it could possibly not be working, however I forgot about the units!
Now I know it is knots and so until the bug is fixed I will have fun doing "x1.85" in my head!

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