I was asked to teach people programming on python from scratch in one day. Initially, the task was not to understand it deeply but to see the possibilities. To touch rest-api, and to hook machine learning.
Continue reading “A practical review of python in one day”
Has managed me so to get in touch =) Okay. After searching, I found a good page .
Continue reading “Building pyQT and pyVTK for Windows”
Once a colleague, once again finding an interesting article on google scholar did a million moves – well, you know, for citation you need to click on the quotes under the article, and then in the opened window select the file format (BibTeX, EndNote, RefMan, RefWorks) and download it to put into the corresponding program. In addition, of course, download the article itself with sciHub – open sciHub, insert the previously copied link to the article – and download. And suddenly, looking at me – “you’re a programmer!”.
Continue reading “Citation file from google scholar and an article from sciHub in one click”
Once i wrote about problems with setting gitlab-ci based on gitlab-runner, and i did not show final successful settings.
Continue reading “Example of gitlab-ci settings for ROS project”
There was a gitlab (10.4) and everything was fine, but one day, mails stopped coming. I opened the console (sudo gitlab-ctl tail) and found a sore – OpenSSL::SSL::SSLError: SSL_connect returned = 1 errno = 0 state = error: certificate verify failed . Without thinking for a long time i ran to the admins.
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I purchased ov7670 camera and decided to repeat this article. With the connection it seems like everything is clear. Arduino’s code uploaded. Then I need a Windows – I found it from a friend. Have downloaded, unpacked java classes – do not start. We opened the source code – the code was compiled for a 32-bit system, for 64-bit it needs a reassembly. In addition, the packages javax.comm.* for 64-bit does not exist , and we are too lazy to install 32-bit jdk.
Continue reading “Test of cheap arduino camera OV7670”
As I wrote in the previous entry , I updated gitlab and was going to configure ci. I decided to start with the standard gitlab-runner . Installed gitlab-runner, created docker image based on FROM ros: kinetic-ros -base-xenial using the dockerfile . Configured config.toml to work with the docker, registered test commands in .gitlab-ci.yml for the project. And tried to run:
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Context. There is a gitlab-ce version 8.4.1 with a couple of old projects. It was planned to start new projects, so I want to update the system so that it will work the next couple of years.
What I did (Ubuntu 16.04): apt-get dist-upgrade && gitlab-ctl reconfigure . Yes, I’m fearless (the project code was cloned along with all the branches!). Gitlab was updated to 10.1, but it did not start.
Continue reading “Problems with update gitlab 8.4 -> 10.1”
1. The first place i am giving to a bunch of ROS with Gazebo (this is a simulator). The script is as follows: by the launch file the gazebo starts with the needed world, the robot model are spawned there, and then the controllers are started. You sit in the console, start the launch, look rostopic list – everything is fine, but when trying to listen any topic (rostopic echo /joint_states) – silence.
Continue reading “Unclear errors when working with ROS”
A month and a half ago, I went to the expense of and bought a 3d printer – Anet A6. This is my first experience, but I assembled and tuned it – and it prints! Well, that’s all I’ve done for now (except, I also plugged the buzzer), so I type and enjoy the process.
Continue reading “Anet A6 and 3d printing”