Hello i am looking at some Hall Effect Sensors for i project i thought of the other day. i know they have three pins a + and - and the middle pin is the output. but is the out put just a difference in voltage depending the direction of the Hall Effect Sensor. wikipedia did not have a good explanation

 

ahhhhh never mind. a Hall Effect Sensor is nothing that i want. i am just looking for somthing to detect like a lean like if i tip the censor to the left. but not a accelerometer. like a electronic level of some sort

 

I think that you do want an accelerometer. You are measuring the acceleration due to gravity. The component of gravitational acceleration along the axes of the accelerometer depends on its tilt.

http://www.memsic.com/data/pdfs/an-00mx-007.pdf

 

Would a mercury switch work?

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not i want more of a variable resistor than switch.