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SET UP
======
|
|
PB1 o-------------.
| ____|____
at90usb162 | | |
| | Relay |
| |_________|
| |
| |
|
-----+-------- GND
No resistor is required to limit the current flow through the at90usb162 pin,
which can only take a maximum of 40mA. The reason for this is that the relay
coil its self has the correct resistance, at 5V, to pull less than 40mA. So
you can just power it directly from a pin.
PARTS
=====
Relay
part no. N05AW from Maplin
http://www.maplin.co.uk/dpdt-1a-miniature-relay-37494
REFERENCES
==========
Useful notes on programming AVR chips (without the Arduino libraries):
http://jamie.lentin.co.uk/embedded/minimus/
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