Sugar Shot to Space KNO3/NaNO3/Mannitol propellant test

Propellant mass 182 grams:
35% KNO3 (potassium nitrate)
30 NaNO3 (sodium nitrate)
35% Mannitol (sugar alcohol C6H8(OH)6)
1% Red Ion Oxide (RID)


Reaction of vanillin with ascorbic acid

„5g vanillin were heated in a 100ml beaker to 130°C, then 1g ascorbic acid dissolved. The mixture turned dark green after stirring it for several minutes. The reaction product is a soft, clear and elastic compound“

Raspberry Pi: MPEG-2- und VC-1-License in shop


Now you can use the Raspberry as a Mediaplayer and further software updates will allow encoding to.


Hermeneutics – what ?!?

Hermeneutics (/hɜrməˈnʲtɨks/), broadly, is the art and science of text interpretation.“

Just reading isn’t enough to understand what’s written for example on wikipedia. Without further Knowledge of topic it is only data and no meaningful information.

So maybe your next homework should be your own work and not a just copy paste document.

Window cleaning Techie sytle – Kärcher WV50 plus

I’m personally not the greatest fan of cleaning windows, but the damn windows getting dirty from time to time and therefore need attention. The Kärcher Company has a wide range of cleaning equipment starting with consumer products and ending with professional tools.

The high pressure water cleaner’s always attract my attention and the few times I see them in action the proof 100%. Back to the dirty windows problem. In years of establishing a solution for window cleaning, the water with cleaning substrate and removing this solution after applying to the window seems to be a good solution at all.

The Kärcher WV50 plus acts like a vacuum cleaner by removing the water from the window with air. The result is quite good and for approximately 50 € it’s worth every dim.

Telnet & Dial-Up BBS Guide

Let the good times roll …

The Telnet BBS Guide is the largest active listing of Dial-Up and Telnet accessable Bulletin Board Systems on the Internet! We list a total of 345 BBS and related systems with brief and detailed descriptions and a downloadable text-version listing suitable for listing on your BBS or for as a download for others to view and use.


Pocket Mini Computer

The Pocket Mini Computer was designed by Jeff Ledger.

The Pocket Mini Computer is pre-installed with a COLOR BASIC. COLOR BASIC is similar to the BASIC found on common microcomputers of the 80’s and early 90’s.

Explore micro computing with a machine which:
Can be successfully assembled in an evening.
Can be programmed in BASIC. (and other languages)
Can play games and run programs.
Most importantly: Can be understood.

The Pocket Mini Computer Kit arrives as a project which requires a small amount of soldering, all components are „thru-hole“ making it an easy project for anyone with modest soldering skills.


The Pocket Mini Computer hardware supports:

VGA Output
Right/Left Audio Output
PS2 Keyboard
Wii Classic/Nunchuck controller connection
Optional SRAM (32k extended RAM using 23K256)
Optional IR receiver connection
Optional I/O experimenters‘ port“


VIA Technologies APC 8750 $60 Android board

Operation System support: Android 2.3
Memory: DDR3 512MB Memory / 2GB NAND Flash

APC runs a custom Android system, built for keyboard and mouse input.

A basic selection of applications is preinstalled.

Also included is a full set of consumer I/O ports, enabling APC to connect to your PC monitor or TV.

Neo-ITX is form factor compatible with Mini-ITX and MicroATX


OpenStack – private and public cloud under Apache 2.0 license

OpenStack OpenStack is a global collaboration of developers and cloud computing technologists producing the ubiquitous open source cloud computing platform for public and private clouds. The project aims to deliver solutions for all types of clouds by being simple to implement, massively scalable, and feature rich. The technology consists of a series of interrelated projects delivering various components for a cloud infrastructure solution.

Why open matters: All of the code for OpenStack is freely available under the Apache 2.0 license. Anyone can run it, build on it, or submit changes back to the project. We strongly believe that an open development model is the only way to foster badly-needed cloud standards, remove the fear of proprietary lock-in for cloud customers, and create a large ecosystem that spans cloud providers.“