Problem with IMU example

B.rayane · June 4, 2017, 11:14am

Hey, I have a problem here with The IMU when I run AccelGyroMag.cpp i get zeros even when I tilt the Navio . Plz Any idea @igor.vereninov

igor.vereninov · June 7, 2017, 4:31pm

Please make sure that your Navio is fixed with screws to Raspberry Pi.

B.rayane · June 9, 2017, 8:22am

Yeah i did, The Barometer example works preety fine but the IMU doesn’t

mikhail.avkhimenia · June 9, 2017, 8:51am

@B.rayane do you have Navio+ or Navio2?

B.rayane · June 9, 2017, 9:03am

I have Navio+

george.staroselskiy · June 9, 2017, 10:16am

Could you please post output of emlidtool?

B.rayane · June 9, 2017, 10:40am

Here it is the output, I have no connection problem. have you any idea how to solve it. Thank you

emlidtool version: 0.8.8
Vendor: Emlid Limited
Product: Navio+
Issue: Emlid 2017-03-23 5e28de2c424cadfb61a62b88e9c0af98a6d25545
Kernel: 4.4.36-a7765e7-emlid-v7+
Trying to run tests
Testing all sensors
2017-06-09 10:41:35 navio root[887] ERROR mpu9250: Failed
– Reason: No connection!
2017-06-09 10:41:35 navio root[887] INFO ms5611: Passed
emlidtool -h to get more help

george.staroselskiy · June 9, 2017, 4:20pm

A picture of the setup will certainly help!

B.rayane · June 9, 2017, 4:40pm

here it is the set up:

thanks for your help

george.staroselskiy · June 10, 2017, 12:04pm

Looks like you didn’t screwed down the board!

B.rayane · June 11, 2017, 5:13pm

I did from the diagonal, it is not loose, I ll screw it all over and try again

B.rayane · June 12, 2017, 8:03am

i screwed the Navio and tried again here what I had when I run emlidtool

  pi@navio:~ $ emlidtool
    emlidtool version: 0.8.8
    Traceback (most recent call last):
      File "/usr/local/lib/python3.4/dist-packages/emlid/deviceinfo.py", line 12, in __init__
        with open("/proc/device-tree/hat/vendor", 'r') as f:
    FileNotFoundError: [Errno 2] No such file or directory: '/proc/device-tree/hat/vendor'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/emlidtool", line 9, in <module>
    load_entry_point('emlidtool==0.8.8', 'console_scripts', 'emlidtool')()
  File "/usr/local/lib/python3.4/dist-packages/emlid/emlidtool.py", line 81, in main
    do_info()
  File "/usr/local/lib/python3.4/dist-packages/emlid/emlidtool.py", line 33, in do_info
    information = DeviceInformation()
  File "/usr/local/lib/python3.4/dist-packages/emlid/deviceinfo.py", line 18, in __init__
    raise NoHatException("Seems like you booted without Navio properly screwed!")
emlid.deviceinfo.NoHatException: Seems like you booted without Navio properly screwed!

and I still have the same problem, I have tilted it in all directions. here is the output:

pi@navio:~/Navio/C++/Examples/AccelGyroMag $ ./AccelGyroMag 
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000
Acc:  +0.000  +0.000  +0.000  Gyr:   +0.000   +0.000   +0.000  Mag:  +0.000  +0.000  +0.000

here is the set:

could it be the power !!! please help

mikhail.avkhimenia · June 13, 2017, 9:13am

Seems like something is wrong with the IMU chip. Please check your PM.

fmentiplay · June 17, 2017, 9:35am

Did you solve the problem? I have a Navio2 and I am getting the same emlidtool ERROR mpu9250: Failed --Reason: No connection

B.rayane · June 18, 2017, 1:00pm

I got the same error but after screw it down, this error has gone and I got a different one, try to do the same. Well in my case there is something wrong with the IMU chip.

B.rayane · June 21, 2017, 11:14am

I have tested the PPM Example and also I tried to echo all the topic listed when running rostopic list and i wonder if it has something to do with the IMU

when i run the PPM Decoder Example, it seems like no PWM signal is generated and when i kill the process i get this:
2017-06-21 10:30:06 sigHandler: Unhandled signal 2, terminating
here it is the setup:

i have 4-8.4 Volt PPM, could it be the error!!

when echoing the topics (almost all of them), non of them was publishing except for /mavros/state and here it is the output:

header: 
 seq: 0
 stamp:                                             
 secs: 1498038435
nsecs: 704922790
  frame_id: ''"
connected: False
armed: False
guided: False
  mode: ''
  ---

Any suggestion will be appreciated. Thanks