After the basic environment installed, ready to get started learning.
Facing a lot of information and information online unable to start, suddenly I thought of the previous Top articles written about the entry of ROS, immediately turn out a careful reading read it, finally have the tricks.
According to the article, will seriously http://wiki.ros.org/ROS/Tutorials the Beginning Level 20 tutorials are read and follow the practice, and learned a lot, had some specific features of the ROS understanding.
During encounter the most problems there are two types:
1, linux related commands are not familiar with, but no details of a website or information system can access relevant commands, any problems can only search a bit, feeling a bit scattered. Every time the feeling of the past is so, I do not know the situation is so pointless or Linux?
2, ROS-related commands and some basic information nor a summary of the place, the flexibility of command parameters seem large, but did not find the appropriate system description, a little depressed. Not only it is in use by looking through other people's example of gradual accumulation?
And always felt linux-related content and skills most have to rely on "word of mouth" to get (find others introduced the use of the network is essentially the equivalent of word of mouth), like the windows can not be developed by https: // msdn. microsoft.com under development, Android by http://developer.android.com for a description of that system.
Is this is to bring open source "side effects"?
Finally, in accordance with article Top recommendation intends to install Roboware Studio, are not familiar with the command to reduce the barriers to bring programming, linux and encountered a problem ROS version :-(
Roboware Studio only supports 64-bit ubuntu 16.04 and ROS kinetic, and I installed ubuntu system is 64-bit ROS of 18.04 and melodic, silent, they have to re-install again.
linux version of the problem is really a headache pit ah, why not do a new version is compatible with older versions of it? The presence of so many versions of the same time, it is for beginners to rip circle ah!
But the fourth installation, hundreds of times, and soon the installation is complete.
Now I'm basically a 64-bit ubuntu 16.04 on learning and ROS kinetic, the 32-bit version preserved, for future use in case encountered only support 32-bit software.
A small discovery: the same is ubuntu16.04 + ROS kinetic, 32-bit version can not under copy text from Windows, 64-bit versions of it can be, and one secret I do not know what?
Next, in accordance with the recommendation of the Top proceed to try ROS function in a physical robot, intended to replace the virtual baby turtles with a real car, in front of Toturials progressive realization of several functions.
First, looking for a single-wheel drive, steering casters simulation model. Because when you browse the information, I find this book a chapter is "to build one of your own mobile robot":
TortoiseBot robot model used and I do basically the same:
When the simulation model can be built into the back, but with two differential replaced, somehow? There is no corresponding model? Or other reasons?
Which Supreme know if there is such a model, hope pointing, first thanks!