020104005 > |led pass pressure sensitive signalling mechanism| This is an experiment that related pressure with light emission and colour in order to generate an active signalling mechanism. The detail belongs to the research – doped ground  which investigated on proposing an active ground that embedded piezoelectric materials as energy collectors. The project proposes to feed the led emission from the piezoelectric material in order to activate a signalling system where the intensity and display will be a reflection of the collected energy. The more activity happening on the field, the more signalling will occur.