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>
> _______________________________________________
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> edubrm@brmlab.cz
> http://rover.ms.mff.cuni.cz/mailman/listinfo/edubrm
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