Berry GPS-IMU not shown in i2c

Forums Technical Support for BerryGPS and BerryGPS-IMU Berry GPS-IMU not shown in i2c

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This topic contains 7 replies, has 2 voices, and was last updated by  Xi 3 months, 3 weeks ago.

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  • #7404

    Xi
    Participant

    Hi there,

    I recently bought Berry GPS-IMU for RP 3, but looks this device doesn’t show in i2cdetect at all. I tried 2 IMUs and 2 RPs, no luck.

    I was using the female head to pin it to the GPIO, properly soldered.

    command line output as follows :

    pi@raspberrypi:~ $ sudo i2cdetect -y 1

    0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f

    00:          — — — — — — — — — — — — —

    10: — — — — — — — — — — — — — — — —

    20: — — — — — — — — — — — — — — — —

    30: — — — — — — — — — — — — — — — —

    40: — — — — — — — — — — — — — — — —

    50: — — — — — — — — — — — — — — — —

    60: — — — — — — — — — — — — — — — —

    70: — — — — — — — —

    I was follwing this guide to enable my rp’s i2c

    https://learn.adafruit.com/adafruits-raspberry-pi-lesson-4-gpio-setup/configuring-i2c

     

    please help!

    • This topic was modified 4 months ago by  Xi.
    • This topic was modified 4 months ago by  Xi.
    Attachments:
    #7408

    PeterP
    Participant

    Hi

    We do test every one before it gets packaged.. so it is very rare that one will not be working, but it does happen.
    Lets first checked i2c.

    ls -l /dev/i2*
    
    lsmod | grep i2c
    
    grep i2c  /boot/config.txt

    Is the GPS working?

    Peter --OzzMaker.com --

    #7412

    Xi
    Participant

    pi@raspberrypi:~ $ ls -l /dev/i2*

    crw-rw—- 1 root i2c 89, 1 Jun 18 18:05 /dev/i2c-1

    pi@raspberrypi:~ $ lsmod | grep i2c

    i2c_bcm2835             7167  0

    i2c_bcm2708             5994  0

    i2c_dev                 6913  0

    pi@raspberrypi:~ $ grep i2c  /boot/config.txt

    dtparam=i2c_arm=on

    dtparam=i2c1=on

     

    GPS is not working either, no green led light, gpsmon is displaying nothing either.

     

     

    #7413

    PeterP
    Participant

    The LEDs will only come on once there is a GPS fix.

    Can you follow this guide up until you reach this command cat /dev/serial0
    http://ozzmaker.com/berrygps-setup-guide-raspberry-pi/

    Let me know if you see any information from the GPS

    Peter --OzzMaker.com --

    #7425

    Xi
    Participant

    somehow I can’t paste the whole output from the console, please find screenshot as attached.

    #7427

    Xi
    Participant

    gpsmon’s output:

    tcp://localhost:2947          JSON slave driver>

    (115) {“class”:”VERSION”,”release”:”3.11″,”rev”:”3.11-3″,”proto_major”:3,”proto_minor”:9,”remote”:”tcp://localhost:

    2947″}

    (125) {“class”:”DEVICES”,”devices”:[{“class”:”DEVICE”,”path”:”tcp://localhost:2947#/dev/serial0″}],”remote”:”tcp://

    localhost:2947″}

    (154) {“class”:”WATCH”,”enable”:true,”json”:false,”nmea”:false,”raw”:2,”scaled”:false,”timing”:false,”split24″:fals

    e,”pps”:true,”remote”:”tcp://localhost:2947″}

    #7429

    PeterP
    Participant

    thanks, the screenshot shows that the GPS is working.  So the PCB does have power.

    Last item to check, can you please check the solder on the two connections highlighted  below. Maybe touch them up with more solder.

     

     

    If it doesn’t work after this, please send your order receipt to sales< at >ozzmaker.com.  we may have to send you a another one

    Peter --OzzMaker.com --

    #7433

    Xi
    Participant

    no luck with more solder.

    I bought 2 from amazon, returned one already due to the same situation, does it has something to do with the whole batch of the product?

    anyway, i’m going to send the receipt to sales email, thanks!

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