Computerhilfen tech-tips

Print out the paper template and put it onto your Raspberry's GPIO ports: This way you'll always know what each pin does!Download: GPIO Pin templateThis sketch gives an overview of the GPIO pins (General Purpose in / Out) of the Raspberry Pi: While some of the pins supply 3.3V or 5V current, others can be controlled by software: Here the status can be queried with a program or current can be sent on request: for example, a connected LED can set... Read more...

Google games are interactive Google doodles that are displayed on special occasions and only for one day. Here we show you the best of the hidden games on the Google website: Google made a lot of effort with it's Pac-Man game for the 30th birthday of Pacman, but also the Pony Express or the celebration of the Brazilian Valentine's Day are great and fun! Google Games and interactive doodles:.spiele { font-size:15px;}@media screen and (max... Read more...

With SSH (Secure Shell) you can control your Raspberry Pi remotely over the network without a monitor and keyboard attached: Just open your SSH application on your computer and connect with the Raspberry (click here to learn how to connect with the Raspberry via SSH!). For safety reasons, SSH is disabled by default but there are two easy ways to enable it! Enable SSH on a Raspberry Pi without a monitorYou can simply copy an empty text-file o... Read more...

If you up- or downloaded something onto the Raspberry or changed some files and don't see your changes after a reboot, there might be a problem which requires immediate action: Otherwise you could risk to loose your data on the mini computer!One symptom of a failing SD card (or a micro SD card) is that it could become read-only: While still appearing normal to you and the Raspberry's operating system, all changes are only made in the Raspberry's ca... Read more...

If your linux computer (a Raspberry Pi running Raspbian but also a desktop pc with Ubuntu or Debian) has problems to reboot or shutdown, this tip might help! You also should make sure to backup your data: In our case it was a sign that the Raspberry's SD card was dying!» Deutsche Version hier! This is how it looks like: If you want to restart the computer with a "sudo rebo... Read more...

The newest version of Microsoft's Edge browser uses the Chromium engine (just like Google Chrome). It now also comes with a Dark Mode, that is available in the new Canary Version. But: Before you can use it, it has to be activated in a hidden settings menu.Download new Edge Browser (Beta)!After downloading and installing you can change the settings by typing "edge://flags" in the address bar. After that, search for "themes": Here you can enable... Read more...

Since May the 4th., Firefox disabled many of the installed add-ons: This was caused by an outdated security certificate that the add-ons relied on. Until the Firefox developers offer a patch for the problem, we have here a quick fix to make the add-ons work again! Activate Firefox Add-ons again!To make the add-ons work again, you can change a setting in the advanced setting tab of the Firefox browser. Therefore, start the Firefox and enter t... Read more...

GIF animations can loop for ever or play only a given amount of times: It is possible to play the animation only once without looping. Every frame can have it's own color palette and duration time: This makes the GIF animation a nice tool to animate elements on a web page. With a modern browser there are some flaws, though: The browser will cache the GIF file. If you reload the page, it will only show the last frame and not the entire animation again!&... Read more...

Chrome 74 will come with a new dark mode for Windows, Chrome 73 brought the dark mode already to macOS. In this article we will show you, how to activate the dark mode in your Chrome browser and why that could be an option.When using Windows or macOS on a PC in a dark environment (e.g. late at night in the bed) the bright screen is uncomfortable to read for many people. Therefore Apple and Microsoft developed a darker theme for the operating system: If... Read more...

Amazon sells their Fire Tablets as cheap and nice tablets that could be perfect for a smart home monitor. Unfortunately they come with a lock screen that cannot easily turned off in the settings. But don't worry, with the Google Android Developer Bridge you can change two important settings to keep the lock screen away!This method also has some disadvantages: You cannot access the settings from the swipe-down menu anymore, the developer options are... Read more...