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Topic: Piezo to operate a relay (Read 374 times) previous topic - next topic

Aarwhy

Hi,
I am behind B4 I start.
1) New, to the forum,
2) First experience with Arduino boards,
3) Old, retired, & mentally challenged with electronics,

My question is:
How can I get  piezo operate a small relay? on the UNO board
I would like the piezo to  operate relay to make & break  a closed 3vdc circuit.

I have looked it the Arduino Knock, but cant find anything operating a relay.
I would really appreciate if someone could give some direction. (to be honest, show me how to do it)
No Idea 
Thanks in advance

JimboZA

Hi and Welcome... Here's some direction...

I guess you've done the tutorials with LEDs before you got to knock? Or can do them now?

Here's what I'd do:

First, in the knock tutorial, where it sends "knock" to the monitor, replace that with a line that does a digitalWrite to a pin of your choice, as if to switch an LED on. In fact, switching an LED on is a good place to start with this. (Don't forget to set the pin to output first.) And you would probably want to put a delay in there to switch the LED off again... Something like that anyway.

Then, read this tutorial or any similar one to see how to switch a relay. Note that it's simply a matter of switching an Arduino output pin, as if it was an LED.

Last, rig up the relay as in that tutorial, and replace your LED with that.

Arduino ethernet server here.... http://jimboza.gotdns.com:8085/

No PMs for help please

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