/elec/audio-switcher

To get this branch, use:
bzr branch http://bzr.ed.am/elec/audio-switcher
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initial commit
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SET UP
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======
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              |   
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         PB1 o-------------.
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initial commit
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              |        ____|____
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  at90usb162  |       |         |
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              |       |  Relay  |
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              |       |_________|
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              |            |
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              |            |
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                           |
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                      -----+-------- GND
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No resistor is required to limit the current flow through the at90usb162 pin,
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which can only take a maximum of 40mA.  The reason for this is that the relay
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coil its self has the correct resistance, at 5V, to pull less than 40mA.  So
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you can just power it directly from a pin.
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PARTS
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=====
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Relay
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	XXXX from Maplins
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initial commit
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REFERENCES
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==========
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Useful notes on programming AVR chips (without the Arduino libraries):
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	 http://jamie.lentin.co.uk/embedded/minimus/