Search found 20 matches

by maisky
Wed Mar 15, 2017 10:24 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: IMU6050 understanding
Replies: 7
Views: 6990

Re: IMU6050 understanding

Ok I unterstand.
I will only use one baro and imu.
I will try to check the timing in the mainloop.
Thanks
by maisky
Tue Mar 14, 2017 9:27 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: IMU6050 understanding
Replies: 7
Views: 6990

Re: IMU6050 understanding

Has anyone used the IMU with an Arduino pro mini 3.3V / 8Mhz?
I have tried it and no problems found.
But is the calculating speed high enough?
by maisky
Mon Mar 06, 2017 8:46 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

I believe the original values are good for the MS5611. The MS5611 does not need such a strict filter.
Ok, I will also test the changed values with the MS5611 in compare to the original values.
But this will take a few days.
by maisky
Sun Mar 05, 2017 8:38 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hi mstrens I wanted to report after a long break again. The last activity was the combination of BPM280 and IMU. I have made some experiments with these two parameters (what you have recommended): #define Z_VARIANCE 50.0f // initially 500 #define ZACCEL_VARIANCE 0.1f // initially 1 I would say the b...
by maisky
Wed Feb 22, 2017 8:56 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Great it works.

OK 4g is not very much. Then I have to fly carefully ;)
What is the unit of values. If I move the sensor fast I get values of over 15.
by maisky
Tue Feb 21, 2017 10:11 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

you're right, the Altitude for IMU+BMP280 comes from Vspeed. I would say this noise on the altitude is no problem. OK I understand, then I will play something with the parameters of the Kalman filter. I do not know the Kalman filter so far. Perhaps I find suitable parameters. In the accelerations I ...
by maisky
Mon Feb 20, 2017 9:52 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hi mstrens, it is much time elapsed, there were a lot of other things to do... Now I have done some tests with IMU and MS5611 / BMP280. The results of IMU + MS5611 looks very good. The response of Vspeed is 0.3 to 0.4 seconds faster than without IMU. The noise is slightly more than without IMU, but ...
by maisky
Thu Jan 19, 2017 8:44 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

For my gliders I see no need for it.
Maybe it is interesting for FPV. But for FPV is only helpful if the data is displayed in the monitor.
Do you know a module with only MPU6050 and MS5611 (or BMP280)?
by maisky
Thu Jan 19, 2017 8:23 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hi mstrens,
the GY-86 module also has an HMC5883L.
Does oXs supports this Digital Compass IC?
by maisky
Thu Jan 19, 2017 6:32 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

I forgot the diagram of comparison BMP280 and MS5611 for sensitivity=100.
by maisky
Thu Jan 19, 2017 6:22 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hi carbo, you are right. I think for the BMP280 is a sensitivity of 100 the maximum. Larger values I have not tested yet. Normally I switched off the vario in the range of -0.5 to +0.5 m/s (with logical switches on Taranis). But in case of Sensitivity=100 I can sometimes hear vario tones. In the nex...
by maisky
Wed Jan 18, 2017 9:02 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hi mstrens,
I ordered an MPU6050 (GY-521) 10 minutes ago. :D
by maisky
Wed Jan 18, 2017 7:57 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hi, Yesterday I did two more tests with different values for Sensitivity. Maybe this is also interesting for you. The first tests were with sensitivity = 50. Yesterday I measured with sensitivity = 25 and Sensitivity = 100. In the height measurement I can see no big differences (compare_Alt). But fo...
by maisky
Tue Jan 17, 2017 6:22 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hi kale123, I moved the BMP280 and MS5611 simultaneously. Both sensors are connected to the same Arduino. and both sensors are logged simultaneously by the Taranis. The FrSKY high precision Vario I moved in a second test run. To synchronize both data series I controlled the cordless screwdriver by a...
by maisky
Mon Jan 16, 2017 8:59 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hi mstrens, sorry for tho long silence, the construction of the test setup was a bit difficult. I tried to use a cordless screwdriver with a belt pulley to raise and lower the sensor. To control the motor I used a ESC. So I have a chance to synchronize the measurements (with additional FrSKY High pr...
by maisky
Wed Jan 11, 2017 9:26 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Yes, today i got a sm5611 modul.
In the next days I will build a setup with both sensors.
Then I can play a bit at home with it.
I let you know what is the result of comparison.
It is possible to transmit two Vspeed simultaneously (without switching with PWM)?
by maisky
Wed Jan 11, 2017 8:12 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hi mstrens, GREAT IT WORKS!!! It sounds just like my version when I lift the vario. Sorry, I have not seen the two lines to initialize the sensor. Now we need people to test during the flight. In Germany the weather is terrible now and much too cold for me ;) If there is good weather, I will test th...
by maisky
Tue Jan 10, 2017 10:25 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hi mstrens, I have tested the new version. The good news, reading of calibration data are correct. But the adc_P and adc_T are all times 00. I believe, the sensor is not started. in the setup routine I set: I2c.write( BMP280_ADR , 0xF5 , (uint8_t)0 ) ; // t_sb = 0 ,IIR filter = 0 I2c.write( BMP280_A...
by maisky
Mon Jan 09, 2017 9:07 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Many thanks mstrens for this fast answer. Unfortunately your version is not working properly yet. The read calibration data are not correct: calibration data #1 = 0 error= 0 calibration data #2 = 13056 error= 0 calibration data #3 = 192 error= 0 calibration data #4 = 84 error= 0 calibration data #5 ...
by maisky
Sun Jan 08, 2017 6:08 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: openxsensor with BMP280
Replies: 59
Views: 36597

Re: openxsensor with BMP280

Hey friends of openxsensor, I'm new here in this forum and I also searched for support for the BMP280. But in the actual version (7?) i don't found any driver or option in config.h. So I tried to adjust the driver, but I'm not a good software developer ( more hardware). The driver works, but I've on...

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