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I’m trying to set up a ROS install using the instructions found here:

http://developer.dji.com/onboard-sdk/documentation/sample-doc/sample-setup.html#ros-oes

Specifically I am happy and things install and make successfully until I reach step 4: 

Building the ROS Nodes
4. If you don't have a catkin workspace, create one as follows:
mkdir catkin_ws
cd catkin_ws
mkdir src
cd src
catkin_init_workspace

Where does this catkin_ws go? In the previous step we are in ~MyUser/Onboard-SDK/build/ but this doesn’t seem to be the right location to install the catkin_ws? As of now I’ve attempted an install the catkin_ws inside the build folder of ~MyUser/Onboard-SDK/build/catkin_ws which gave an error after step 6:

6. Build the dji_sdk ROS package and the dji_sdk_demo ROS package.
cd ..
catkin_make

Error:

"/home/sixarms/Onboard-SDK/build/catkin_ws/src/Onboard-SDK-
ROS/dji_sdk/include/dji_sdk/dji_sdk_node.h:17:19: fatal error: tf/tf.h: 
No such file or directory”

I then deleted everything inside MyUser/ folder and started again, this time I made a catkin_ws in the same folder as the OnBoard-SDK (i.e. ~MyUser/catkin_with with MyUser/OnBoard-SDK in the same folder) and I still get a fatal error on step 6, exactly the same. Can not find tf/tf.h. hmmm :/

MrUnreliable
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3 Answers3

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catkin_ws or any other name you give to it can go anywhere, different ros packages or dji_sdks or any other sdks then go inside catkin_ws/src/.

After step 4. (creating the workspace and initializing it) you should clone the dji_sdk package inside that catkin_ws at catkin_ws/src/ source the setup.bash script $ . devel/setup.bash from within catkin_ws/ and run $ catkin_make again from within catkin_ws/.

pijemcolu
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  • I built the catkin_ws and put both libraries dji_sdk and Onboard-SDKROS into the src folder. Same errors when using catkin make, certain files cannot be found, fatal error, etc etc after it reaches about 90% complete. Thanks for clarifying about the catkin_ws, though it seems the instructions given by DJI are still incorrect or my particular case is broken. – MrUnreliable Jun 30 '17 at 12:32
  • Most likely you are missing some dependencies. – pijemcolu Jun 30 '17 at 12:34
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I had this problem and the solution for me was to install the full blown version of ROS instead of the base version:

sudo apt-get install ros-kinetic-desktop

gareththegeek
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I know I have arrived quite late to the party but for anybody searching for this issue, most likely, this happens because there is a missing ROS library. If you install ROS full desktop version, probably won't have this problem. If you don't have a full desktop version, just run:

sudo apt-get install ros-<your_ros_version>-tf
GCCRUZ
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