I'm currently designing a toy as a promotional item for my company. I can't get into the specifics of what it is, however, I can say that the toy is submersible, runs off of two AAA batteries, and uses a small hobby electric motor. The motor has to shut off when the toy submerges, so I designed a float that kicks a micro-switch. My question is how can I have it so that the motor turns off when the switch is engaged? My first thought was to use a simple NOT IC, but after looking down that avenue, I don't think that's going to be a possibility as it wouldn't completely shut off power to the motor.

My second thought was to put together some kind of voltage controlled switch that would kick off when it receives 3V from the micro-switch, but I'm not quite sure how to go about that. I know this is a stupid question that probably has a simple answer, but I'm a complete novice when it comes to electronics and only have a basic understanding. Any help on the matter is greatly appreciated!

P.S. - I meant to say "Inverted" switch lol

 

Maybe I'm missing something but why not use the micro-switch to switch the motor directly?
What is the Micro part No.?
Max.

 

Keep in mind a microswitch with normally closed (N.C.) contacts, or invert the pull action from the float switch.