So ... we may not be doing a solar-powered USB charger but alarm using piezoelectricity effect, pressure and a buzzer. Turning sound( vibrations ) into energy.

http://www.youtube.com/watch?v=ReN_QU78pcs

http://www.youtube.com/watch?v=Xuw9frP1GNo

Title of project: Alarm ________________________________

Focus of project:_Piezoelectricty Effect_____________________________

Names of members	Member 1: Ivan	Member 2: Clarence	Member 3: Brandon	Member 4: Xiang Teng
Guiding Question 1	How much electricty is generated in a 'tap'.	How much pressure is required for the buzzer to sound	Where can we get the material to make the piezoelectric disc	-NIL-