Motion detection with Raspberry Pi
To detect intruders in my living room I used the PIR sensor from a Funduino starter kit. A Python script triggers some appropriate actions when motion is detected. Set the jumper on the sensor PCB to ... Read More
Google Text to Speech on Raspberry Pi
Google Text to Speech provides excellent speech quality. A limitation is that the Pi needs to be online to use it (which mine always is, so it’s not really a drawback). First, the ALSA sound dri... Read More
Create a Debian package from an executable jar
We’ll use our simple game Cave Fizzer as an example again. It’s a libGDX project and we can simply export the desktop sub-project as a runnable jar. Once we have done so the challenge is t... Read More
Using the Loader pattern with SQLite on Android
In my Dutch Hangman game a random word is retrieved from a database containing about 100000 words. To provide a smooth user experience this needs to be done asynchronously. (Actually several asynchron... Read More
Remote-controlled mains sockets with Raspberry Pi
Introduction RC power sockets commonly use the 433 MHz band, like many other Short Range Devices (e.g. car keys, garage doors, LPD radios). We will use pilight to sniff the RF signals so we can reprod... Read More
Raspberry Pi Camera: turn off the LED
Since our camera is placed behind a window glass and the LED causes reflection, there’s a need to turn it off. Current versions of Raspbian seem to ignore the disable_camera_led=1 setting in /bo... Read More
Google Analytics SDK v4 with libGDX
Introduction Google discourages the use of the legacy Analytics SDK in new projects. Instead the want you to use Android Native Application Tracking as provided by Google Play Services. Some documenta... Read More
AdMob with libGDX
Introduction As of August 1, 2014 Google requires you to implement the Play version of the Mobile ADS SDK in your app. They offer some documentation on how to do this in Android Studio. However, we us... Read More
Google Play Game Services with libGDX
Introduction Android changes, libGDX changes and Google Play Services change really fast. In order to implement Google Play Services in a libGDX Android app I proceeded from the excellent tutorial by ... Read More
Android game: Cave Fizzer
How deep can you penetrate our cave system? Meet the Fizzer in his exploration of the underground world. The concept will probably feel familiar: – Travel as far as you can. – Do not hit t... Read More