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GMU:The Conceptual Sensor/Meike Halle (view source)
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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. | 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. | I also installed a switch with 2 open wires, which would be closed if someone would open the back door. | ||
[[File:electronics1.jpg]] | |||
[[File:electronics1.jpg|150px]] | |||
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I wanted that the windows of my house would lit up automatically when its geting dark outside, just like one would expect from a normal inhabited house. | I wanted that the windows of my house would lit up automatically when its geting dark outside, just like one would expect from a normal inhabited house. | ||
So i made a darkness sensor with a photocell i installed in the ceiling of my house and a hanging LED inside of my house. I also glued some aluminium foil on the inside of my house to strenghten the light effect of the little led i put in it. | So i made a darkness sensor with a photocell i installed in the ceiling of my house and a hanging LED inside of my house. I also glued some aluminium foil on the inside of my house to strenghten the light effect of the little led i put in it. | ||
[[File:electronics2.jpg]] | |||
[[File:electronics2.jpg|150px]] | |||
'''How to make a garden and plant a tree''' | '''How to make a garden and plant a tree''' | ||