Hi all,

 

I wonder if anyone managed to add a GPS receiver to the

Sparkfun 9 Degrees of Freedom - Razor IMU - AHRS?

http://www.sparkfun.com/products/10125

 

According to the comments at

http://www.sparkfun.com/products/9623

this should be possible.

 

If so, how?

I like to have the GPS data available with the rest of the IMU data.

 

Also I couldn't find any contact data at http://code.google.com/p/sf9domahrs/

What is the appropriate way to contact the developers?

 

I send a PM to Jordi Muñoz. No answer for a few days.

Maybe he is on holiday?

 

Thanks,

Jan

janmartin AT diy-streetview DOT org

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • The GPS model you are planning to use may have an impact on the most suitable connection in regards to direct compatibility with the existing parsers available in the libraries.  In order to use gps units that require initialization, such as increasing baud rate or switching to a binary protocol, both TX and RX from and to the 9DOF to the GPS would be required leaving no uart connections left to transmit 9DOF+GPS data.  I also have a couple of the 9DOFs laying around (non ITG3200 type) and have given some thought to this previously.  I have an extra older GS405 (SIRF III chipset) GPS I was thinking of connecting to one of them.

     

    The solution seems to be to add an extra uart to the 9DOF in manner that uses available pins and has

    arduino support.  The following is such a solution:

     

    Breakout Board for SC16IS750 I2C/SPI-to-UART IC

    sku: BOB-09981

    http://www.sparkfun.com/products/9981


    3692234222?profile=original

    4 SPI connections will connect between this board and the 9DOF.

    The SPI to UART output pins will connect to the GPS.

    The 9DOFs EM406 is left free for sketch development and to provide the required Sensor+GPS data.

     

    The arduino library to control this chip is here:

    https://github.com/sparkfun/WiFly-Shield

     

    Sparkfun forum discussing this this library is here:

    http://forum.sparkfun.com/viewtopic.php?f=32&t=25216


    If you're using a GPS that doesn't require full two way communication...disregard all of the above...lol !!!!

     

  • Developer

    Sure you can connect your GPS to it. Razor board have 1 uart port so to connect GPS you need to piggyback on it. Just connect your GND/TX from GPS to Razors GND and RX pins. Make sure that all serials are on same speed and voila, gps data starts to flow to it. 

     

    Then it's totally another story on what to do with this GPS data, you can echo it to razors TX and read it from somewhere else or what ever. That's up to you and your needs.

     

    Sending PMs to core developers can be missed sometimes, we are trying to follow all queries as often as possible.

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @SahikaGenc: AWS DeepRacer & Hot Wheels Track https://youtu.be/4H0Ei07RdR4 via @YouTube
Sep 14
DIY Robocars via Twitter
Sep 8
DIY Robocars via Twitter
RT @davsca1: We are releasing the code of our Fisher Information Field, the first dedicated map for perception-aware planning that is >10x…
Sep 8
DIY Robocars via Twitter
RT @SmallpixelCar: How this works: 1)object detection to find cones in single camera image, 30 frames/sec on @NVIDIAEmbedded Xavier. 2)comp…
Sep 8
DIY Robocars via Twitter
RT @SmallpixelCar: Use two color cones to guide the robocar. No map needed, on onsite training needed. Just place the cones and it will fol…
Sep 7
DIY Robocars via Twitter
Sep 7
DIY Robocars via Twitter
RT @roboton_io: Great to see http://roboton.io running at 60fps on the cheapest #chromebook we could find! #edtech #robotics #educat…
Sep 3
DIY Robocars via Twitter
RT @openmvcam: Crazy in-depth article about using the OpenMV Cam for Astrophotography: https://github.com/frank26080115/OpemMV-Astrophotography-Gear https://t.co/BPoK9QDEwS
Sep 3
DIY Robocars via Twitter
RT @openmvcam: Hi folks, it's finally here! Our first draft of our Arduino Interface Library is out! It works over SoftwareSerial, Hardware…
Sep 3
DIY Robocars via Twitter
RT @chr1sa: Please let them have an open API. This would be perfect for @DIYRobocars races https://twitter.com/NintendoAmerica/status/1301513099707658246
Sep 3
DIY Robocars via Twitter
RT @SmallpixelCar: Lanenet pretty much used all my GPU power on @NVIDIAEmbedded Xavier since I optimized with tensorRT. I need to run anoth…
Sep 3
xemone liked Max Gilson's profile
Aug 31
DIY Robocars via Twitter
RT @LyftLevel5: Our @kaggle competition on Motion Prediction for Autonomous Vehicles is now live! Experiment with the largest-ever self-dri…
Aug 24
DIY Robocars via Twitter
RT @chr1sa: Our next @DIYRobocars virtual AI car race will be on Sept 26th. Sign up here https://www.meetup.com/DIYRobocars/events/272786977/ https://t.co/UENKGSOWO8
Aug 24
DIY Robocars via Twitter
New ready-to-run @NVIDIAEmbedded JetRacer car from Waveshare. Perfect for the next @diyrobocars race as soon as we… https://twitter.com/i/web/status/1297960223013867520
Aug 24
DIY Drones via Twitter
RT @chr1sa: The US government just approved 5 US-made drones for purchase, all based on the @Dronecode @PX4Autopilot standard. Great news f…
Aug 20
More…