> Dekuji...
>
> Dne 4.5.2011 7:53 "Pavel Ruzicka" <
ruza@ruza.eu> napsal(a):
>> -------- Original Message --------
>> Date: Wed, 04 May 2011 06:28:01 +0200
>> From: Pavol Rusnak <
stick@gk2.sk>
>>
>> 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 <
stick@gk2.sk>
>> _______________________________________________
>> edubrm mailing list
>>
edubrm@brmlab.cz
>>
http://rover.ms.mff.cuni.cz/mailman/listinfo/edubrm
>> _______________________________________________
>> Brmlab mailing list
>>
Brmlab@brmlab.cz
>>
http://rover.ms.mff.cuni.cz/mailman/listinfo/brmlab
>
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