Hello, I have purchased a vibration sensor
I have seen somewhere that it works on 3.3V but it is not working on 3.3V, instead working on 5V.
Kindly give me suggestions to find another one that can work on 3.3V.
Regards,
Almost all of these sensors on a board are using an LM393 Voltage Comparator. Here is a datasheet for a typical vibration sensor.
The LM393 will work with a Vcc from 2 to 36-Volts, so a 3v3 supply is just fine. Just adjust the pot on the board to get the response you want.
Yes I have seen it already. But it is not working.
I could not find an actual data sheet, but this shows the reference circuit 801s:
http://www.electronicaestudio.com/docs/SHT-801S.pdf
Ok, it says its input is 9V, so if I change the resistor value, maybe I can run at 3.3.V