Proximity sensor?

Discussion in 'The Projects Forum' started by kdar1987, Jan 18, 2011.

  1. kdar1987

    Thread Starter New Member

    Feb 5, 2010
    Proximity sensor? What can I use?
    What can I use for proximity sensor? I want device to react if object like car gets close in front of it.. by close.. I mean 30-100 meters.

    So that, if there are no objects in proximity, device will use less power, if there is something in proximity, device will work in its normal mode.

    Maybe someone will reply motion sensor, but the device could be moving as well (mounted on another car, for example).