Bbybo93's profile - activity

Hey all. I am trying to understand the localization part of Turtlebot 3 Burger. From what I understand from turtlebot3_core, by using an IMU to calculate rotational values from the wheels and translating them into odometry and updating it in the world_map.

Please kindly correct me if I am wrong and aside from odometry, may I know if the LIDAR plays a part in Localization? There are a few localization algorithms like ekf etc. What is the algorithm employed by Turtlebot 3?

Regards, Bobby

Edit: Hi Pujie,

Yes, I do know SLAM. I am trying to dive in deep about ROS for a report. From my understanding, ROS localization works by Adaptive Monte Carlo Localization(AMCL) technique. In layman's terms, just take it that each time I scan, I throw particles around and those particles are fixed and known as poses. Each time I scan, I know my position based on the poses I scanned with laser(kinect, lidar etc)

Odometry is using position sensors within the wheel encoders to determine the position. Using the information obtained from odometry and applying transforms(tf function with the mathematical calculation), it updates the x, y, z position of turtlebot 3 in the map, as shown in rviz.

I am trying to see if I am missing anything out.

Hey all,

I have been using Ubuntu 16.04 LTS on Oracle VirtualBox on Win 10. [ http://emanual.robotis.com/docs/en/pl... ] I am stuck at this step because as I described in the title, I am using wifi on my laptop but in virtualbox, it detects 'ethernet' instead.

The ideal scenario: Laptop uses WiFi, Ubuntu, Master has wlan0 to communicate with my SBC, Raspberry Pi. Slave.

Do I need to install a Wifi driver in ubuntu to make this work?

I tried changing the network configuration in the VirtualBox, tried changing network connection from Bridge to NAT etc and it still doesn't work. I have been stuck at this part for a long while, please kindly help me out.

P.S I am trying just to move the LIDAR sensor.

Thank you so much!

Hi Pujie, Yes, I do know SLAM. I am trying to dive in deep about ROS for a report. From my understanding, ROS localiza

How does turtlebot 3 do localization? Hey all. I am trying to understand the localization part of Turtlebot 3 Burger. Fr

Hey all.

I have just assembled the turtlebot 3 and installation of ROS on respective platforms and I am really excited with what I can do with this!

1. I can't get OpenCR to move the DYAMIXEL when holding SW 1 and SW2.

2. I need to connect a few sensors to Raspberry Pi 3 and to transmit those sensor data to a master computer. Would it be possible to do that through ROS or do I have to try it out with Python?

VirtualBox and Turtlebot 3. During RVIZ, unable to contact my own server at 10.0.2.15 I am using VirtualBox to run LINUX

Laptop using WiFi but VirtualBox doesn't use WiFi. Hey all, I have been using Ubuntu 16.04 LTS on Oracle VirtualBox on

Laptop using WiFi but VirtualBox doesn't use WiFi. Hey all, I have been using Ubuntu 16.04 LTS on Oracle VirtualBox on

Turtlebot 3 - Setup Hey all. I have just assembled the turtlebot 3 and installation of ROS on respective platforms and