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I live in Canada, so we don't have a RadioShack, but will these substitutes from Mouser work?555 timer, low power:http://ca.mouser.com/Search/ProductDetail.aspx?qs=sGAEpiMZZMsFq5dYAzx%252bAFeiB1Mj74zc675YsA4Y0rc%3d1uF capacitor:http://ca.mouser.com/Search/ProductDetail.aspx?R=UVR1H010MDD1TDvirtualkey64700000virtualkey647-UVR1H010MDD1TD.01uF capacitor:http://ca.mouser.com/Search/ProductDetail.aspx?R=QYX1H103KTPvirtualkey64700000virtualkey647-QYX1H103KTPNPN transistor:I'll just use a 2n222210k/56k ohm resistors:Is 1/4W okay?Momentary switch:http://ca.mouser.com/Search/ProductDetail.aspx?R=R13-502A-05-BBvirtualkey11230000virtualkey112-R13-502A-B%2fBpOne more question... Should I be using a rheostat or a potentiometer if I want to use it in place of the 56k ohm resistor to vary speeds? Or does it even matter...? And if possible, could you link me to a good one from mouser?Thanks,Bustin