Update

So, in general a very long time since my last post. If I think back to the time when I have written the last post, it's like thinking at another live. I started studying physics. I hope I'll finish it also.

Comments

Post a Comment

Popular posts from this blog

Help me to improve support texts

Hi, under the hood the wizard now is quite finished. But as I'm not a native English speaker I need your help at improving the support texts given inside the wizard. They are, as Robert stated a bit to formal and stiff. I really would be glad if some of you could have a look at the wiki page , where you can edit the texts.
Read more

Workshop Project: Hot Wire Anemometer

Image
I just want to present my project I built as an own project in the electronics workshop hold at my university, that really has been quite interesting. Its a so called "Hot Wire Anemometer" (Airflow-meter). Here you have the explanation as an excerpt of the project documentation: Die Idee beim Hitzdrahtanemometer ist den Wärmeverlust an einem Glühfaden zu bestimmen und dadurch auf die Geschwindigkeit des kühlenden Luftstroms zu schließen. Um den Wärmeverlust messen zu können wird die Widerstand – Temperatur Abhängigkeit des Glühdraht benutzt um diesen auf einer konstanten Temperatur also Widerstand zu halten. Schließlich wird der dazu notwendige Strom, bzw der Spannungsabfall am Glühdraht gemessen, verstärkt und ausgewertet. Although we had a bunch of problems in the end everything worked very well and was a nice combination on analog and digital elements. As a hot wire we used a 6V light bulb where we took off the glass.
Read more

Dry-Ice Canon fun

Image
Use frozen carbon dioxide (dry ice), mix it with water and pipe the steam into a PET bottle. When the bottle at roughly 22bar explodes you can shoot for example a toy chicken over more than 80 meters (We had serious problems to build a projectile that is not destroyed by the power of the launch). We built the device for a creativity competition at our university. And well, we could not place an object accurate on 20m but for shure we did it with the biggest impact. Music on Amazon and iTunes If you are curious, here some detail about the construction: For us secure handling was not only an option. We have seen some people that put water and dry-ice together into an bottle close it and put it into a pipe. But you have good chances that it will explode in your hands. So we put an PET bottle into our pipe and connect it with an CNC made adapter to the presure reservoir outside. Beside that, all parts are made from steel and welded. We experienced that a 1.5l coke bottle (actually we used
Read more