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
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