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2014-10-27 22:29:17 -0500 asked a question gazebo 3.0 problem

I'm using Gazebo on OS X Yosemite, and I got these warnings while compiling my plugins. Is there anything I can do to fix these?

/usr/local/include/boost/interprocess/sync/posix/semaphore_wrapper.hpp:131:14: warning: 'sem_init' is deprecated [-Wdeprecated-declarations]
   int ret = sem_init(handle, 1, initialCount);
/Applications/ note: 'sem_init' has been explicitly marked deprecated here
   int sem_init(sem_t *, int, unsigned int) __deprecated;
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2014-06-28 11:39:58 -0500 asked a question local communication in Gazebo

I'm new to Gazebo. What's the easiest way to let the robots communicate with each other?

What I really need is local communication, meaning a robot will only be able to communication with another if they are within a certain range, say 1m, of each other.

2014-06-18 11:50:41 -0500 asked a question How to get sensor data in model plugin

I'm new to Gazebo. Sorry if the answer is obvious. Is there a simple way to get sensor data (with or without using sensor plugin) in the parent model's plugin without using ROS topic/service?


2014-06-17 11:03:46 -0500 commented question local communication in Gazebo

No... We are using IR signals for communication on our hardware, it has a much longer range... Is there anything similar in Gazebo?

2014-06-16 14:11:27 -0500 asked a question local communication in Gazebo

Is there a sensor for local ranged communication in Gazebo?

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2014-05-17 11:45:51 -0500 commented answer Gazebo IR sensor

I meant proximity sensor. I checked the links before, but I thought it's using laser instead of IR, could you please clarify it a little bit for me? I'm new to robotics so please forgive me for the naive questions. Thanks a lot!

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2014-05-17 11:21:15 -0500 asked a question Gazebo IR sensor

Is there any IR proximity sensor model/plugin for Gazebo?


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2014-05-13 15:36:38 -0500 commented question How to put the pieces together?

If I hava a robot in a Gazebo world, what's the most common way to make the robot move autonomously, say running in a circle? Do I just simply publish robot states?

2014-05-13 14:37:20 -0500 asked a question How to put the pieces together?

My goal is to use simple DIY robots, which only have wheels and IR receiver and emitters, to do distributed control algorithms for flocking and foraging. I went through tutorials for ROS, RViz, TF and URDF, yet I fail to understand how to put all the pieces together for a simulation.

Specifically, I know how to specify the robots in URDF, and after the Gazebo tutorial I'll know how to put a robot in a simulated physical world, but I'm not sure if I can put tens of robots in the same world. And more importantly, I don't know where does my algorithm for a single robot go, i.e. how do I code the behavior of a robot?

Thank you for your help in advance!