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2018-09-24 12:19:30 -0500 marked best answer ROS for Aerial Robotics

Hey Folks,

I am newbie at ROS, I had installed Jade version on Ubuntu15.04 vivid. I follow up the wiki, but Indeed it doesn't make sense for me uptill now. Please any good tutorials for the application of ROS for aerial robotics. Also I need to know the main features of ROS. I have to confess that I don't so much about the benefit of using ROS on Linux, rather than fast what others pros?

Best, Marwa ElDiwiny

2018-09-19 04:29:28 -0500 marked best answer TurtleBot on Jade ROS

I face a problem while running ~$ roslaunch turtlebot_example turtlebot_gazebo.launch . I see on the website http://wiki.ros.org/action/show/Robot... The latest officially supported release is for indigo.

Is there any solutions for tackling this problem?

The Result while running command line is : [turtlebot_gazebo.launch] is neither a launch file in package [turtlebot_example] nor is [turtlebot_example] a launch file name The traceback for the exception was written to the log file

2018-09-19 04:29:16 -0500 marked best answer SLAM on Jade ROS

Hey Folks,

I want to know you about SLAM project on Jade ROS, I see videos on youtube, but none of them explain how this is done. Could any one help in listing projects for beginners like me rather than turtle in the ROS wiki.

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2017-09-13 19:30:10 -0500 marked best answer Connection Arduino with ROS

Hey Folks,

I have a problem in the connection between arduino and ROS, I am using Ubuntu 15, 64 bit, Jade version ROS.

The problem in these two following commands commands

roscd rosserial_arduino/src cp -r ros_lib <sketchbook>/libraries/ros_lib

It gives the following error

bash: /libraries/ros_lib: No such file or directory

Although I have tried to download the source code from Github and putting in the sketchbook of Arduino Linux environment, but no connection.

Another concern between Catkin and Rosbuild, I have read difference between them, but uptill now I can't figure out if the problem lies in selecting the proper for building executive files. Any recommendation!

Have a Great Day!

Best, Marwa ELDiwiny

2017-09-13 15:37:27 -0500 marked best answer Hey Folks I have a problem while installing Hydro ROS on ubuntu 15.04 64bit

eldiwiny@eldiwiny-HP-2000-Notebook-PC:~$ sudo apt-get install ros-indigo-desktop-full Reading package lists... Done Building dependency tree
Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation:

The following packages have unmet dependencies: ros-indigo-desktop-full : Depends: ros-indigo-desktop but it is not going to be installed Depends: ros-indigo-perception but it is not going to be installed Depends: ros-indigo-simulators but it is not going to be installed E: Unable to correct problems, you have held broken packages. eldiwiny@eldiwiny-HP-2000-Notebook-PC:~$

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2016-11-14 10:17:24 -0500 asked a question Explore surrounding areas and make a map

Hey, I am trying to do this task link: link text, but I got the following errors

eldiwiny@eldiwiny-HP-2000-Notebook-PC:~$ roslaunch mrp2_navigation gmapping_demo.launch [gmapping_demo.launch] is neither a launch file in package [mrp2_navigation] nor is [mrp2_navigation] a launch file name The traceback for the exception was written to the log file

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2016-11-14 03:48:26 -0500 commented answer ROS serial communication error

[ERROR] [WallTime: 1479116767.531493] Mismatched protocol version in packet: lost sync or rosserial_python is from different ros release than the rosserial client [INFO] [WallTime: 1479116767.535425] Protocol version of client is unrecognized, expected Rev 1 (rosserial 0.5+) [ERROR] [WallTime: 14791

2016-11-14 03:48:06 -0500 answered a question ROS serial communication error
[ERROR] [WallTime: 1479116767.531493] Mismatched protocol version in packet: lost sync or rosserial_python is from different ros release than the rosserial client
[INFO] [WallTime: 1479116767.535425] Protocol version of client is unrecognized, expected Rev 1 (rosserial 0.5+)
[ERROR] [WallTime: 1479116774.520920] Lost sync with device, restarting...
rosrun rosserial_python serial_node.py _port:= /dev/ttyACM0[ERROR] [WallTime: 1479116789.534359] Lost sync with device, restarting...
[ERROR] [WallTime: 1479116804.537555] Lost sync with device, restarting...
[ERROR] [WallTime: 1479116819.540783] Lost sync with device, restarting...
[ERROR] [WallTime: 1479116834.544034] Lost sync with device, restarting...
[ERROR] [Wal
2016-11-14 03:47:20 -0500 commented question ROS serial communication error

rosrun rosserial_python serial_node.py _port:= /dev/ttyACM0

Here is the error I got, while for the first time, it was working perfectly. BTW, hello example in ros_lib

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2016-11-14 01:23:20 -0500 answered a question Reading Potentiometer in ROS

Thanks, simply I am trying read potentiometer values in ROS and plotting them in python plot tool, I am doing this because I don't want to use MATLAB.

I am using arduino uno, potentiometer that is it.

2016-11-13 00:04:26 -0500 answered a question rosserial fails when using sensor_msgs::Imu

got the same error while trying to receive from arduino

2016-11-13 00:03:33 -0500 asked a question ROS serial communication error

Hey,

While trying again to connect arduino with ROS, I got the following error

[INFO] [WallTime: 1479016828.422284] Protocol version of client is unrecognized, expected Rev 1 (rosserial 0.5+)
[ERROR] [WallTime: 1479016830.422676] Mismatched protocol version in packet: lost sync or rosserial_python is from different ros release than the rosserial client
[INFO] [WallTime: 1479016830.424668] Protocol version of client is unrecognized, expected Rev 1 (rosserial 0.5+)
[ERROR] [WallTime: 1479016837.411422] Lost sync with device, restarting...
[ERROR] [WallTime: 1479016852.414668] Lost sync with device, restarting...
[ERROR] [WallTime: 1479016867.417601] Lost sync with device, restarting...
2016-11-13 00:02:17 -0500 asked a question Reading Potentiometer in ROS

Hey Folks,

I am trying to read potentiometer value in ROS, but I stuck with error

#include <ros.h>
#include <ros/time.h>

/*
  AnalogReadSerial
  Reads an analog input on pin 0, prints the result to the serial monitor.
  Graphical representation is available using serial plotter (Tools > Serial Plotter menu)
  Attach the center pin of a potentiometer to pin A0, and the outside pins to +5V and ground.

  This example code is in the public domain.
*/

// the setup routine runs once when you press reset:
void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0:
  int sensorValue = analogRead(A0);
  // print out the value you read:
  Serial.println(sensorValue);
  delay(1);        // delay in between reads for stability
}

To be honest, sometimes I don't understand why baudrate is not mentioned in ROSlib. or what the right code I should write for receiving analog signal.

Best, Marwa

2016-11-12 18:43:03 -0500 commented answer Control Tutorial RC circuit with ROS

I have tried this example, but I don't know how to do that for taking analog signal from arduino to it, any example please

2016-11-12 10:34:39 -0500 asked a question Serial Communication between Arduino and MATLAB in linux environmnt

Hey Folks,

I have successfully connected arduino with ROS, now am trying to connect arduino hardware with MATLAB in Ubuntu environment, there are many problems appeared and I didn't find a useful solution yet!

The error is

install_arduino Warning: There is at least another arduino.m file in the path, the installation will go on but it is strongly suggested to delete any other version before using this one

In install_arduino (line 15) Arduino folders added to the path Error using install_arduino (line 35) Unable to save updated MATLAB path (why?) On Windows, exit MATLAB, right-click on the MATLAB icon, select "Run as administrator", and re-run install_arduino.m On Linux, exit MATLAB, issue a command like this: sudo chmod 777 usr/local/matlab/R2011a/toolbox/local/pathdef.m (depending on where MATLAB is installed), and then re open MATLAB and re-run install_arduino.m

As I mentioned before the connection between Arduino and ROS is much faster and efficient than using MATLAB, but the problem is the feature for controller plots etc is much easier at MATLAB.

Looking forward for your reply!

2016-11-08 12:19:25 -0500 asked a question Thermal Soaring Flight Control in ROS

Hey Folks,

Does any one has an experience how to make simulation for thermal soaring implemented flight control in ROS.

Best, Marwa

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