GMU:The Conceptual Sensor/Meike Halle: Difference between revisions

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 Basically its a simple 555 timer in astable Mode and i used the different Resistors to get a low humming sound pretty similar to some older door bells.
 after making the circuit i also installed a bell-button next to the front door of my house. therefore i drilled a small hole and made a normally open switsch wich u can close by pushing the bell button with your finger.
+The other circuit on the right is a sound modulation with 2 555- timers to get a loud and high pitched alarm sound as an alarm system for the back door of my house.
+I also installed a switch with 2 open wires, which would be closed if someone would open  the back door.
 [[File:Fritzing2.jpg]]
+This is the digramm of the second bread board on wich are on the left top the little circuit for the christmas tree. Basically a little tree with some LEDS, in row and a resistor,in it to let it glow up.
+On the left bottom we have the circuit for the working chimney. First I thought about some kind of some moving cotton coming out of the chimney but then i found some glitter in my cupboard of wonders and liked the idea of throwing glitter around in room 201 much more fun then just some lame cotton.