Could it work a sensor with a piezo to detect a vibration but without using any leds?????
This seems like a continuation of this thread?
You don't need LEDs to detect vibration, that's what the piezo does.
hahahah yeeees....i have 3 codes and i can;t do something when i put the white cable into pin 13 ..i take higher numbers
when it will do anything i take a 1.39....????
is it right?????
I'm not sure what you mean goga.
Do you have the piezo connected as Rob suggested in the other thread, reading on the analog pin a0 and displaying it's reading on the serial monitor?
What more do you want to do?
when i will haven't any vibration i want the serial monitor show 0 and when my mobile vibates show something different from 0......this
(sorry if i don't understand a lot about arduino but i am very new programmer and i try to finish my project for my university )
Maybe the piezo is not very sensitive and your mobile vibrating is too soft. Does it deliver a non-zero value if you knock on the table, or even tap on the piezo itself?
You should post a diagram of the circuit and also you code.