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 > >
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