Dual channel voltage/Current and temperature logger webfrontend on Raspberry Pi

This is a project to monitor and log two channels of voltage and current and one channel of temperature. It runns on a Raspberry pi with a nice webfrontend. Its purpose is to measure systems like DCDC converters or battery capacity over a longer period.
The data is updated dynamically.

Blog with map system

A custom blog system. It features:

Back end:
- Add entries via webeditor or mobile Android app
- Fully integrated Android Push Service
- Android App
  - Take pictures and edit text
  - Directly upload to blog
  - Choose location manually via map or with GPS
  - Get Notifications
- Webditor
  - Picture upload with preview and size information
  - Rotate and scale picture
  - Multiple pictures per entry with thumbnail preview
  - Clickable map for location selection
  - Resolve address from GPS coordinates OR
  - Resolve GPS coordinates from address
- Administer all comments
- User admin panel
- Entry text supports HTML
- and more...
Front end:
- Embedd Youtube videos
- Directly link the entry to a map marker
- Support for login-dependable content filtering
  - Entries can be tagged to be hidden for guests
  - Hide entries that are still being edited
  - Entry viewability is colorcoded for the admin
- Map marker popups show head text, address and a link to the entry
- Mini worldmap shows location on map, generated in realtime
- Simple and efficient navigation with page-buttons
- Complete user-based comment system
  - Add comments
  - Edit or delete own comments
  - View list of all own comments
- Realtime weather and currency display
- Complete PHP based, nice login system
- Logging who viewed the blog
- Several pictures per entry
- and more...
Services:
- Android Push Notification via GCM
- OpenStreetMaps
- OpenWeather
- TheMoneyConverter
- mySQL

Linux MPD Web Interface

One main purpose of the Raspberry Pi is its use as media centre. I wanted to use it as a headless system with the possibility to control it from anywhere including smartphones. A web interface is the most universal solution. I therefore set up the MPD (Music Player Deamon) on the Pi and constructed a web interface. There are some solutions already available but they mostly run commands by reloading the entire page. I wanted to have a static page and process the commands in the background. The Interface consists of a bunch of JavaScripts and PHP scripts that run on an Apache web server on the Pi.
Still under development, especially the optics.

University App Website

I developed an Android app for the University of Applied Sciences And Arts in Hannover. It was so successful that it became the official University app and I also made a Website for it.
It includes server logistics ans a brief GUI for an anonymous statistical surveillance of the app.

Gearloose website

This website as such is also a project. I wrote several PHP scripts (and in the old version Javascripts, the new one is Java-free) that are used to automate content presentation and linking. For example the "next" and "last" buttons are generated by a PHP script. The private login page is a high end login system that supports users with folder permissions.