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Esp8266-003 // HC SR501 // BUZZER

PostPosted: Thu Nov 24, 2016 10:27 pm
by Titusak
Hi,

I'm kind of a new comer when it comes to electronic, so I tried to illustrate, in the easiest way possible, what I'm trying to achieve.

I wanted to have your opinions and advises.

Please, let me know if I'm missing something before buying the parts. (I already have the ESP, the SR and the buzzer actually - but I was more thinking of resistance and capacitors)

- So the goal, is to detect a movement and when it does, to send a sms via the ESP which will also trigger the buzzer. As you can see one of my main problem is: The ESP is 3.3v, the Buzzer is supposed to be 12v.
How can i go from 3.3 to 12 ? I have no idea...

- In term of the ESP, I just want to make sure, can I, with some code, order the ESP to trigger the buzzer ?

- For the power source, I was thinking of this:

https://www.amazon.ca/XCSOURCE-Battery- ... =3.7v+lipo

It's small, perfect for the ESP, and should provide enough current (800mAh) right ?

Thank you very much !