Connecting 7" touchscreen display to Raspberry Pi 4B
1.0 Introduction Raspberry Pi 4B has a Display Serial Interface (DSI) port for connecting a Raspberry Pi touchscreen display using a ribbon cable. In this post we will look at…
1.0 Introduction Raspberry Pi 4B has a Display Serial Interface (DSI) port for connecting a Raspberry Pi touchscreen display using a ribbon cable. In this post we will look at…
1. uname command The uname command prints information about the system. uname is a portmanteau word made up from "unix" and "name". uname can be called from the command line…
1.0 Raspberry Pi Raspberry Pi is a popular single board computer developed by the Raspberry Pi Foundation in the U.K. Raspberry Pi 4 Model B (Pi4B) was released in June…
When Gimp is installed fresh, the toolbox and layers windows are stacked on top of the main window and it is not possible to get the main window on the…
After installing Ubuntu Linux on a laptop with screen resolution 1920x1080 pixels or more, you may find that the icons and text appear to be small. You can alleviate the…
1.0 Error Wacom tablet connected to a laptop Wacom One CTL-672/KO-CX tablet was not connecting with a laptop running Ubuntu Linux 18.04 LTS. It was working fine earlier, with the…
Wacom One CTL-672/KO-CX is an 8.5 inch x 5.3 inch graphic tablet which can be connected to a computer via a USB port. The tablet comes with a pressure sensitive…
1.0 502 Bad Gateway After the update of Linux on the web server, the website would not open in the browser. Instead the following error was displayed. 502 Bad Gateway…
The problem of removing leading and trailing whitespace characters in strings occurs in programming quite often. Here is a solution. #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> void trim…
The select system call allows the calling process to monitor sets of file descriptors for readiness for non-blocking I/O operations. After the file descriptors ready for I/O are returned, the…