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2017-02-03 10:49:43 -0600 asked a question ros.spinOnce() during delay

Say I have a ros rate of 10 Hz. Does ros.spinOnce() occur during ros::Duration(2).sleep() ?

Example:

void main(void){
  ros::nh;
  ros::rate r(10);
  while(ros::ok())
  {
    do something;

    ros::Duration(2).sleep();
    ros::spinOnce();
  }
}
2017-01-24 03:13:44 -0600 commented answer Rosserial and Arduino resets

Can you tell me which client.py did you edit ? I have something like this in client.py in src/rosserial_arduino

import roslib; roslib.load_manifest("rosserial_arduino") import rospy from rosserial_arduino.srv import * def callback(req): print "The arduino is calling! Please send it a message:"

2017-01-24 02:45:15 -0600 commented question Lost sync with device, restarting...

when you first run rosserial, does arduino publish any topics and then you get this error ? or you don't get any topics from arduino ?

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2017-01-22 03:22:49 -0600 asked a question navigation with range_sensor_layer in navigation_stack ?

I have an rc car with arduino as speed controller and computer being nvidia tk1. I want to implement a collision avoidance. I have 5 Ultrasonic sensors mounted in front of rc car with odometry and IMU sensors. I am not using any laser scanner. Is this a feasible with range_sensor_layer ?

2017-01-21 03:09:41 -0600 commented answer Mapping with Sonar Data?

Hi Timboln, I am using a similar setup with 5 sonar, odometry and imu with arduino. can you give some more idea on converting sonar data to laser data ? any links or video of ya robot will help. I want to do collision avoidance and localization in a known map.