Ja se pripojuju s pochvalou, takhle sesumarizovany to vypada uzasne! Cestmir
On Wed, May 4, 2011 at 12:38 PM, Radka Haneckova <[email protected]>wrote: > to je tak super :D fakt dobra praca! > > 2011/5/4 Tomas Suchan <[email protected]>: > > Dekuji... > > > > Dne 4.5.2011 7:53 "Pavel Ruzicka" <[email protected]> napsal(a): > >> -------- Original Message -------- > >> Date: Wed, 04 May 2011 06:28:01 +0200 > >> From: Pavol Rusnak <[email protected]> > >> > >> Hi all! > >> > >> See our summary blogpost at: > >> > >> > >> > http://www.element14.com/community/people/brmlab/blog/2011/05/04/challenge-summary > >> > >> Project name: EDUBRM > >> > >> Summary: > >> > >> Aim of our project was to create an open platform for teaching > >> electronic principles. Our target audience were students of > >> elementary and comprehensive schools interested in this field. > >> The main idea of the project is to provide modular design. One > >> "mother board" can be extended with a set of "shields" which > >> are used for particular scenarios. During the challenge we created > >> three example shields and one debug shield for our purposes. > >> > >> Mother board is based on ARM Cortex M3 chip (more exactly LPC 1343 > >> from NXP Semiconductor), Direct digital synthesizer and Operational > >> Amplifiers. This combination allows us to read 6 analog values > >> from the shields, which can be very low, because they can be multiplied > >> up to 32x. DDS generates frequency from 1 Hz up to 50 MHz in 1 Hz steps, > >> which can be used for generating various signals or alternating current. > >> > >> The first demo shield we create illustrates the creation of > >> electricity using a dynamo and electrodes. These are made from > >> different metals and can be plugged into lemon or a potato. Software > >> reads up voltage and draws a nice graph. > >> > >> Second shield represents a simple DC circuit with a battery, switch > >> and a bulb. Edubrm application can detect whether battery and bulb are > >> present and if the student has pressed the button. It also visualizes > >> which parts of the circuit have power and which not. > >> > >> Third shields can visualize voltages and currents in circuits with > >> coils and capacitors. It can also switch between AC and DC power source > >> so student can easily understand behaviour of these electronic parts > >> while turning the power on and off. > >> > >> Check the following video to get the idea how it works! > >> > >> http://www.youtube.com/watch?v=u662X7ndcCM > >> > >> We also came up with ideas for lots of shields that could be used in > >> other fields than electronics. Sadly, we were not able to implement > >> them in time. To give some examples: > >> > >> * shield with two speakers emitting the same soundwave but with > >> different phase, > >> student can use the microphone to find out that there's no sound in > >> the exact > >> middle of them, application would draw charts of signals to speakers > >> and from the > >> microphone (acoustics) > >> > >> * shield that can read various amplified biosignals, like ECG or EEG > >> (medicine) > >> > >> * shield with dynamo and motor connected through gears, student can > >> inspect > >> the resulting voltage while changing the gear ratio (mechanics) > >> > >> Links: > >> > >> * project wikipage - http://brmlab.cz/project/edubrm > >> * source code - http://github.com/brmlab/edubrm > >> > >> We'd like to thank all people involved in organization of this great > >> challenge! > >> > >> -- > >> On behalf of Hackerspace Brmlab > >> Best Regards / S pozdravom, > >> > >> Pavol Rusnak <[email protected]> > >> _______________________________________________ > >> edubrm mailing list > >> [email protected] > >> http://rover.ms.mff.cuni.cz/mailman/listinfo/edubrm > >> _______________________________________________ > >> Brmlab mailing list > >> [email protected] > >> http://rover.ms.mff.cuni.cz/mailman/listinfo/brmlab > > > > _______________________________________________ > > Brmlab mailing list > > [email protected] > > http://rover.ms.mff.cuni.cz/mailman/listinfo/brmlab > > > > > > > > -- > "It is not birth, marriage, or death, but gastrulation which is truly > the most important time in your life." Lewis Wolpert > _______________________________________________ > Brmlab mailing list > [email protected] > http://rover.ms.mff.cuni.cz/mailman/listinfo/brmlab >
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