Support for walkera telemetry.

Rate R1
The two numbers on the bottom are
35000000000099009700f401 and
ffffffff0000000000000000.
Real RPM = 17800 rpm (optical tachometer)

Rate R1
The two numbers on the bottom are
35000000000057005500f401 and
ffffffff0000000000000000.
Real RPM = 10000 rpm (optical tachometer)

Rate R1
The two numbers on the bottom are
3500000000002e002d00f401 and
ffffffff0000000000000000.
Real RPM = 5400 rpm (optical tachometer)

==========================================================

Rate R2
The two numbers on the bottom are
35000000000099009700f401 and
ffffffff0000000000000000.
Real RPM = 17800 rpm (optical tachometer)

Rate R2
The two numbers on the bottom are
35000000000057005500f401 and
ffffffff0000000000000000.
Real RPM = 10000 rpm (optical tachometer)

Rate R2
The two numbers on the bottom are
3500000000002e002d00f401 and
ffffffff0000000000000000.
Real RPM = 5400 rpm (optical tachometer)

From Andrey's videos it looks like RPM value is a multiple of 120...

0x55 = 85
* 120 = 10200 (~10000)

0x97 = 151
* 120 = 18120 (~17800)

I'm agree,

Rate sensor reading * 2 = rps, rps * 60 = rpm

I only wonder that R1 and R2 sensor readings are slightly different. Both sensor read 1 magnet on axis at dremel.

Thanks, this is very useful data. One thing I see is that we have no GPS data in this set. It must use another packet number. I'll build a release with 33, 34, 35 and see if that helps catch it.

Here's a new DFU capturing 7 packets worth of data rather than just 2 which should hopefully identify the GPS info.
It also should properly display RPM (though obviously that is untested):

No result with GPS

35000000000000000000f401
ffffffff0000000000000000
333333333333333333333333
444444444444444444444444
555555555555555555555555
666666666666666666666666
777777777777777777777777

Sorry, have data, need more time to get

35000000000000000000f401
ffffffff0000000000000000
30333032302e383*********
353935342e37363*********
31303*********4d4d4e45fb
000000000000302e3*******
31373M3m3S3s313531303132

Red s incremented every second
Ret S incremented every 10 seconds
....

I think 12 digits of last line represent time.

All * sometimes changed.

I haven't idea what to do with that data.

I need to know the GPS coordinates reported by Walkera firmware to actually make anything of that.

GPS Receiver 15-10-2012 22:09:43
Longitude: East 030°20.9158
Latitude: North 59°54.7051
Altitude: 106.0 m
Speed: 0.5 km/h

a large amount of the data seems to be in ascii.
your data looks something like:

03020.8***** (East)
5954.76***** (North)
10***** MMNE?
000000 0.****
17????151012 (time and date)

Cool, so we have east and north position.
Can you fill in actual vaules for the '*' and '?' cases (even if they are changing, a single set would help)
especially the last 3 lines

35000000000000000000f401
ffffffff0000000000000000
30333032302e3832373045fb
353935342e373737364e0700
31322e380000004d4d4e45fb
000000000000302e30300000
313832353532313531303132

vlad_vy wrote: 30333032302e3832373045fb
353935342e373737364e0700
31322e380000004d4d4e45fb
000000000000302e30300000
313832353532313531303132

So:
03020.8270E
5954.7776N
12.8 MMNE
0.00
182552151012

Or:
030°20.8270E
59°54.776N
12.8 MMNE (altitude maybe)?
0.00 (probably speed)
2012-10-15 18:25:52 (UTC time maybe? looks to be a few hours off)

My local time: UTC + 4

Ok, then we've got almost everything. The altitude looks a bit odd (off by a factor of 10 compared to your stated info), and I'm not sure what 'MMNE' means, but otherwise it looks good.

Edit: Do you tell the Tx your timezone, or did it figure it out by the location?

I set Timezone at GPS settings in Tx (UTC+04.00). Tomorrow I can make next try with GPS.

GPS Receiver 16-10-2012 15:47:43
Longitude: East 030°20.8309
Latitude: North 59°54.7674
Altitude: 28.9 m
Speed: 0.20 km/h

30333032302e3832303245fb - longitude
353935342e373738304e0700 - latitude
34312e360000004d4d4e45fb - altitude
000000000000302e36330000 - speed
313231323436313631303132 - time and date

Every switch on telemetry module with GPS altitude reading is different, from 10.0 to 95.0 m. For Walkera FW and Deviation FW.

Thanks,
I've got it mostly coded up now. I'll build an updated dfu when I'm done for testing.