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 <small>< [[HSC2011]]</small>
+== Hardware Specification ==
+An EduBuzzer contains an ATMega328 connected to:
+* 4 buttons in distinct colours (red / blue / green / yelow)
+* 4 LEDs matching the buttons
+* an RGB LED
+* a piezo buzzer
+* a 1-wire interface for authentication buttons (iButton)
+* an RF transceiver (RFM12B 868MHz model)
+* a 9V block battery and a power switch
+For ease of development and as to make an EduBuzzer expandable to an EduBuzzer base station, a serial line is exposed for connection with an "FTDI cable" -- power supply, RX/TX, reset button. Thus, the devices can be flashed using a bootloader.
+The design takes care to stay compatible with the Arduino even if not Arduino is used in the final version. Thus, prototypes can be built on Arduino shields as well (read the [[Building your own EduBuzzer#The main board|building documentation]] for details).
+== PCB ==
+[[Datei:build_edubuzzer.gif|thumb]]
 == Part list==
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-== Build process documentation ==
-[[Datei:build_edubuzzer.gif]]
-== Specification ==
-Nodes are supposed to be equipped with:
-* RF transceiver
-* 4 buttons, labelled with digits, letters, colours (probably red / blue / green / yelow) and symbols (playstation style?)
-* a LED for each button in matching colour
-* an RGB LED
-* a buzzer
-* a 1-wire interface for authentication buttons (iButton)
-For ease of development, they also get a serial interface ("FTDI cable" -- power supply + RX/TX + reset, also for flashing using a boot loader).
 [[Kategorie:HSC2011]]