Hello, i have found this sensor: http://dx.com/p/oj-cg316-new-arduino-tilt-sensor-module-red-176794.
The only informations are:
Features: OJ tilt sensor is direct derived by four pins; When detect a direction, connects one of the two pins of the same direction to the ground, the other joints IO mouth, and the sensor works.
Specification: Digital mode: pin definition: Sensor pin 1, 2; Sensor pin 2, 3; Sensor pin 3, 4; Sensor pin 4.
Application: Can sense 4 directions, one horizontal position; Sensor the angle title degree: 45 degrees.
I can’t understand, from this informations, how use it. Someone has some experience about this sensor? Or has some idea?