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[Rusty_Faders]

Hellol

Noob here.

Is it possible to trigger the tsunami with a simple piezo sensor?

Thanks!

[robertsonics]

Not directly. When struck, piezo transducers produce voltage spikes which are both too high (can be up to 35V!) and too short to be connected to the digital input of any microcontroller. At best, it will be too short and be missed in an input scan, and at worst, the voltage level will damage the input.

This can be overcome with some additional hardware. A schottkey diode in series with the piezo, and a zener diode along with a resistor/capacitor in parallel, can limit the voltage level and extend the pulse. Google "arduino input piezo drum trigger circuit" (or some variation) to find some example circuits.