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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Electronic project design

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cosmas kinyua

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I have successfully designed a circuit that will give a positive pulse when a button is pressed and a negative pulse when a button is released. the duration of the pulse varies with the value of a capacitor. I designed this circuit to give a pulse to Arduino to send one text when door is opened and one text when door is closed. there is a software solution using flags to send one text but I prefer this circuit. I will upload so that it can be reviewed
 
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