bzr branch
http://bzr.ed.am/elec/audio-switcher
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by Tim Marston
initial commit |
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SET UP |
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o-------------. |
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| ____|____ |
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at90usb162 | | | |
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| | Relay | |
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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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REFERENCES |
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========== |
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Help with programming AVR chips (without the Arduino libraries): |
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http://jamie.lentin.co.uk/embedded/minimus/ |