Welcome to grappendorf.net, a private Website where you can learn about some of my projects (mainly electronics and computer stuff) and other things that interest me.
Look around and feel free to leave me a comment on the contact page.
Featured Projects
CoYoHo - Control Your Home
“Control Your Home” (CoYoHo) is my DIY home automation and survaillance project. The aim is to create a totally wireless and scaleable system to control power switches (lamps and other electrical appliances) and measure values like temperatures, brightness and power consumption. All devices should be controllable through local devices as well as mobile devices over the internet
Analog Computer Construction Kit
Inspired by
Dr. Vogels Home Brew Analog Computer 
, this kit consists of various 100x60 cm PCB cards which can be connected together with 2.54 mm jumpers. Connect the various input and outputs of generators, adders, integrators and multipliers to compute different mathematical functions.
Rubydin
Rubydin is a wrapper for the web application framework Vaadin 
.
Vaadin makes web application development easy and Ruby makes programming easy.
So Rubydin should make web application programming super easy ;-)
Arduino Projects
A very good platform for physical computing is Arduino
.
On the following pages I will present my own Arduino projects and provide my own extensions for these rameworks.
OpenMetix
OpenMetix is an open source software system for acquisition, processing and evaluation of measured data.
Third party projects and external links
On my pages you will find information about projects, products and ideas of other people, that i would like to recommend to you and/or that i am using in my own projects.
To state precisely this difference, all third party projects, products and ideas are linked to their web site on their first occurrence. In addition these links are followed by this icon: . Normal external links are followed by this icon: .
Disclaimer
All information provided in this web site is provided “as is” without any express or implied warranties, including but not limited to the implied warranties of merchantability, fitness for a particular purpose, and noninfringement. Neither I nor any other party involved in creating, producing or delivering this site shall be liable for any direct, incidental, consequential, indirect or punitive damages or any damages whatsoever arising out of your access, use or inability to use this site or on any other hyperlinked web site, or any errors or omissions in the content thereof. I use reasonable efforts to include accurate, complete and current information on this site, however, I’m not warranting that the content herein is accurate, complete, current, or free of technical or typographical errors. it is your responsibility to verify any information before relying on it. I reserve the right to make changes and updates to any information contained within this site or to the services or products described in this site without prior notice.
Licenses
Except where otherwise stated, content on this site is licensed under a Creative Commons Attribution 3.0 License
Except where otherwise stated, the hardware specification on this site is licensed under a CERN Open Hardware License Version 1.1
Except where otherwise stated, the software on this site is licensed under a Apache License Version 2.0
You are free to share (to copy, distribute and transmit) my work and you are free to remix (to adapt) my work, given that the new work is also published under the same Creative Commons Attribution 3.0 license and that you include a reference/credit to me as the original author of this work.
Credits
Thanks to David Vignoni for his Nuvola Icon Theme
Thanks to Thierry Koblentz for his SyntaxHighlight.in tool
