161
edits
GMU:The Conceptual Sensor/Meike Halle (view source)
Revision as of 16:46, 4 March 2016
, 4 March 2016no edit summary
Meike Halle (talk | contribs) No edit summary |
Meike Halle (talk | contribs) No edit summary |
||
| Line 41: | Line 41: | ||
[[File:Fritzing1.jpg]] | [[File:Fritzing1.jpg]] | ||
this is the circuit digram og the both sound circuits. | |||
On the left is the circuit for the alamr bell. | |||
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. | |||
[[File:Fritzing2.jpg]] | [[File:Fritzing2.jpg]] | ||