User:Anna Pfannstiel: Difference between revisions

32 editsJoined 29 July 2015
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== Introduction to Electronics ==
== Introduction to Electronics ==


== Assignment 1: electric resistance and conductivity==
== Assignment 1: variable resistance and conductivity==


'''555 timer in astable mode''' with speaker and different conductive materials
'''555 timer in astable mode''' with speaker and different conductive materials


Current flows through the 555 timer circuit and the attached conductive material, which creates square wave oscillations that are output on a speaker.




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<videoflash type="vimeo">134555309|400|265</videoflash>
<videoflash type="vimeo">134555309|400|265</videoflash>


 
By changing conductive material(water, metal..), you change the resistance and the pitch of the tone.


schematic for 555 timer in astable mode with speaker and different conductive materials
schematic for 555 timer in astable mode with speaker and different conductive materials


[[File:555_astable_2_small.jpg]]
[[File:555_astable_2_small.jpg]]
== Assignment 2: switch==

Revision as of 13:29, 2 September 2015

Introduction to Electronics

Assignment 1: variable resistance and conductivity

555 timer in astable mode with speaker and different conductive materials

Current flows through the 555 timer circuit and the attached conductive material, which creates square wave oscillations that are output on a speaker.


<videoflash type="vimeo">134547338|400|265</videoflash> <videoflash type="vimeo">134555309|400|265</videoflash>

By changing conductive material(water, metal..), you change the resistance and the pitch of the tone.

schematic for 555 timer in astable mode with speaker and different conductive materials

555 astable 2 small.jpg

Assignment 2: switch