Assignment 1: electric resistance and conductivity
555 timer in astable mode with speaker and different conductive materials
<iframe src="https://player.vimeo.com/video/134547338" width="500" height="281" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>
schematic for 555 timer in astable mode with speaker and different conductive materials
