I don’t see anything wrong …
at this time after launching mavros if you give the following command:
rosrun aruco_gridboard set_origin.py
you should see messages from /mavros/local_position/pose topic
if this doesn’t happen try to reboot the FC via GCS (I use mavproxy connected to gcs_url) and after seeing the messages (on GCS or term tab with mavros running):
[ERROR] [1455211795.669665982]: FCU: GPS Glitch
[ERROR] [1455211795.760278673]: FCU: GPS Glitch cleared
give the command:
rosrun aruco_gridboard set_origin.py
again