Arduino PIR motion water gun

first what youll notice my grammer isnt the best :) ok what youll need: 1 transister/mosfet that can handle the current for the water gun motor, this is the one i used - http://www.sparkfun.com/products/10213   -   then a diode, i used this one  -  http://www.sparkfun.com/products/8589   - then a 10k ohm resistor, then a PIR, i didnt use this one but it should work -  http://www.sparkfun.com/products/8630   ...

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