So I'm trying to build a target for a nerf gun and need a trigger for when the target is hit...
I've bought 6 knock sensors: Vibration-Sensor-Module-Arduino-Raspberry
But they seem to take way more of a whack than I want to make them work. Attaching them to the back of the target is very hit and miss (no pun intended), they also suffer quite a lot of bounce once they are triggered.
So I'm looking at trying these: Piezoelectricity-Ceramic-Vibration-Development-Regard
Which look like they might be worth a try.
But they look like a very expensive version of this: Celan-Quality-Piezoelectric-Ceramic-Loudspeaker
And looking at this: https://www.arduino.cc/en/tutorial/knock
The latter looks like all I should need (and a couple of resistors).
Any help appreciated! Here's a bit of a blog of my project so far...