Georeferencing means that the internal coordinate system of a raster image, like a digital map or aerial photo, can be related to a ground system of geographic coordinates. Thus, we can make it appear...Read More
Roger Engelbert’s excellent tutorial on building a classic Frogger clone with libGDX appears to have gone offline. A couple of months ago I based my own clone on this. It definitely needed some ...Read More
Introduction As a low power device the Raspberry Pi makes for a perfect network monitoring host. I’m running Nagios 4 on a Raspberry Pi 2 with a 5V/2A power supply. Fixed IP A fixed IP address i...Read More
Introduction We have seen how to control the Pi Rover over HTTP. However, you may find it a bit of an overkill to install a webserver bundled with PHP just to control the motors. A leaner alternative ...Read More
Introduction We have already seen how to create an installable .deb package. However, to make it Ubuntu we need a source package that actually builds on the Launchpad server farm. This is not hard, bu...Read More
We have created a new Launchpad PPA for the Ubuntu software presented on this site. Details can be found here: https://launchpad.net/~helfrich . For now the repository only contains a rather silly gam...Read More
Introduction Now that we have a programmable robotic platform, built with a Raspberry Pi, a motor controller and a chassis, we’d like to control it remotely, from a PC and later maybe from a mob...Read More
Introduction The need for a new access point arose out of discontent with the Speedport W723V DSL router as provided by T-Online. De device tended to become less stable as more wireless devices got co...Read More
Nitris runs as a Java desktop application (Linux, Mac, Windows) and as an Android app (with some modifications also as an HTML5 web app or an iOS app). You can find it in our Git repository. Game conc...Read More
Introduction To easily access our wireless Raspberry Pi projects (like the Pi Rover) over SSH, FTP, HTTP or whatever, we want to assign a static IP to the WLAN interface. In this example the network a...Read More
Introduction The HC-SR04 can be used to measure distance and detect obstacles in robotic projects. However, the reported range is not always accurate, small objects are mostly not detected at all and ...Read More
Introduction We’ll build a mobile robotic platform with a Raspberry Pi on a chassis. A Pololu DMC02 motor controller board is used to drive the engines. The controller receives serial commands f...Read More
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