{"action":"created","issue":{"url":"https://api.github.com/repos/AutonomyLab/ardrone_autonomy/issues/56","labels_url":"https://api.github.com/repos/AutonomyLab/ardrone_autonomy/issues/56/labels{/name}","comments_url":"https://api.github.com/repos/AutonomyLab/ardrone_autonomy/issues/56/comments","events_url":"https://api.github.com/repos/AutonomyLab/ardrone_autonomy/issues/56/events","html_url":"https://github.com/AutonomyLab/ardrone_autonomy/issues/56","id":10762342,"number":56,"title":"Using Multiple Instances of ardrone_autonomy","user":{"login":"parcon","id":1878923,"avatar_url":"https://avatars.githubusercontent.com/u/1878923?v=3","gravatar_id":"","url":"https://api.github.com/users/parcon","html_url":"https://github.com/parcon","followers_url":"https://api.github.com/users/parcon/followers","following_url":"https://api.github.com/users/parcon/following{/other_user}","gists_url":"https://api.github.com/users/parcon/gists{/gist_id}","starred_url":"https://api.github.com/users/parcon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/parcon/subscriptions","organizations_url":"https://api.github.com/users/parcon/orgs","repos_url":"https://api.github.com/users/parcon/repos","events_url":"https://api.github.com/users/parcon/events{/privacy}","received_events_url":"https://api.github.com/users/parcon/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/AutonomyLab/ardrone_autonomy/labels/enhancement","name":"enhancement","color":"84b6eb"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":71,"created_at":"2013-02-07T23:49:19Z","updated_at":"2015-02-17T08:16:39Z","closed_at":null,"body":"I am curently working to get multiple ardrones flying at the same time from a single desktop. I've built a simple launch file to create an instance of ardrone_autonomy in a namespace called \"quad1\". I also pass in ip arguments  and a statement to handle which controller each drone is to be commanded from. My question is this: Even with compiling a second copy of ardrone_driver and attempting to run it along side the first instance of ardrone_autonomy, the second ardrone_driver fails.  Does anyone know a way to resolve this error?\r\n\r\nI see this error message:\r\n\r\n[quad1/ARdrone-1] restarting process\r\nprocess[quad1/ARdrone-1]: started with pid [17386]\r\nUsing custom ip address 192.168.1.10\r\nWait authentification\r\nWait authentification\r\nWait authentification\r\n===================+> 192.168.1.10\r\n[ INFO] [1360280789.946051099]: Root Frame is: 0\r\n[ INFO] [1360280789.947098353]: ~cov/imu_la set to [0.1, 0, 0, 0, 0.1, 0, 0, 0, 0.1]\r\n[ INFO] [1360280789.948039719]: ~cov/imu_av set to [1, 0, 0, 0, 1, 0, 0, 0, 1]\r\n[ INFO] [1360280789.949083298]: ~cov/imu_or set to [1, 0, 0, 0, 1, 0, 0, 0, 100000]\r\n[ WARN] [1360280789.949989201]: Automatic IMU Caliberation is active.\r\n[ INFO] [1360280789.950096522]: using default calibration URL\r\n[ INFO] [1360280789.950166558]: camera calibration URL: file:///home/parcon/.ros/camera_info/ardrone_front.yaml\r\n[ INFO] [1360280789.953101752]: using default calibration URL\r\n[ INFO] [1360280789.953193572]: camera calibration URL: file:///home/parcon/.ros/camera_info/ardrone_bottom.yaml\r\nDeleting Profile -cea48d22\r\nDeleting Application -e182b69b\r\nInput device Teleop added\r\nStarting thread video_stage\r\nStarting thread update_ros\r\n\r\nvideo stage thread initialisation\r\n\r\nVideo multisocket : init 2 sockets\r\nVideo multisocket : connecting socket 0 on port 5555 UDP\r\nThread `update_ros` started \r\n  - Connection failed\r\nVideo multisocket : connecting socket 1 on port 5555 TCP\r\nFailed to open AT\r\nStarting thread navdata_update\r\nStarting thread ardrone_control\r\nVP_Com : Failed to open socket for navdata\r\nPA : Start thread thread_academy_download \r\nAcademy download stage resumed\r\nMEMORY SPACE ALLOWED : 40 MB\r\nStart thread thread_academy\r\nStart thread thread_academy_upload\r\n - Connection failed\r\n\r\nvideo stage thread ended\r\n\r\nAcademy download stage paused\r\n[ INFO] [1360280795.015007096]:   SEND: CAT_COMMON/altitude_max = 2500.000000 (DEFAULT = 3000.000000)\r\n[ INFO] [1360280795.015084296]:   SEND: CAT_COMMON/enemy_colors = 2.000000 (DEFAULT = 1.000000)\r\n[ INFO] [1360280795.015169021]:   SEND: CAT_APPLI/navdata_options = 268435456.000000 (DEFAULT = 65537.000000)\r\n[ INFO] [1360280795.015248827]:   SEND: CAT_USER/euler_angle_max = 0.087000 (DEFAULT = 0.209440)\r\n[ INFO] [1360280795.015302954]:   SEND: CAT_USER/control_yaw = 1.750000 (DEFAULT = 1.745329)\r\n[ INFO] [1360280795.015363624]:   SEND: CAT_APPLI/bitrate = 4000.000000 (DEFAULT = 1000.000000)\r\n[ INFO] [1360280795.015419406]:   SEND: CAT_SESSION/max_bitrate = 4000.000000 (DEFAULT = 1000.000000)\r\n[ INFO] [1360280795.015475310]:   SEND: CAT_SESSION/detections_select_h = 32.000000 (DEFAULT = 0.000000)\r\n[quad1/ARdrone-1] process has died [pid 17386, exit code -11].\r\nlog files: /home/parcon/.ros/log/7240ab1e-717e-11e2-a955-1c6f65c6b0bc/quad1-ARdrone-1*.log\r\nrespawning...\r\n[quad1/ARdrone-1] restarting process\r\nprocess[quad1/ARdrone-1]: started with pid [17607]\r\nUsing custom ip address 192.168.1.10\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/AutonomyLab/ardrone_autonomy/issues/comments/74631578","html_url":"https://github.com/AutonomyLab/ardrone_autonomy/issues/56#issuecomment-74631578","issue_url":"https://api.github.com/repos/AutonomyLab/ardrone_autonomy/issues/56","id":74631578,"user":{"login":"oscarmendezm","id":2923369,"avatar_url":"https://avatars.githubusercontent.com/u/2923369?v=3","gravatar_id":"","url":"https://api.github.com/users/oscarmendezm","html_url":"https://github.com/oscarmendezm","followers_url":"https://api.github.com/users/oscarmendezm/followers","following_url":"https://api.github.com/users/oscarmendezm/following{/other_user}","gists_url":"https://api.github.com/users/oscarmendezm/gists{/gist_id}","starred_url":"https://api.github.com/users/oscarmendezm/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/oscarmendezm/subscriptions","organizations_url":"https://api.github.com/users/oscarmendezm/orgs","repos_url":"https://api.github.com/users/oscarmendezm/repos","events_url":"https://api.github.com/users/oscarmendezm/events{/privacy}","received_events_url":"https://api.github.com/users/oscarmendezm/received_events","type":"User","site_admin":false},"created_at":"2015-02-17T08:16:39Z","updated_at":"2015-02-17T08:16:39Z","body":"Hi @mikeclement, I am connected via wired. I did try wireless at some point and the results were not very good. Are there any settings in the AP I should change? \r\n\r\nWe do have a lot of wireless signals in our office, but what worries me is the steep decline in performance as soon as one drone is connected. @mani-monaj I was thinking maybe the drones are taking up too much bandwidth? I read somewhere here that they are configured to use all the available bandwidth, so maybe we could modify that (assuming its not to complicated)?"}}