The Piezoelectric energy harvesting devices were fabricated using thick-film technology which is based on screen-printing techniques similar to those used in printing T-shirts. Low cost, simple and efficient in mass production, the piezoelectric materials used in fabricating the energy harvesters are formulated in-house using head zirconate titanate (PZT). It is incorporated with a cantilever structure which operates in a bending mode to generate electrical output at resonant frequencies. These energy harvesters can be applied as wireless self-powered sensors to monitor machinery and structural health, and function as an early warning system for disasters like earthquakes and tsunami.