Piezo Trigger Switch circuit described here is a microcontroller-compatible shock/impact sensor switch module works on 5VDC supply. The whole circuit can be assembled on a 5×7 cm common circuit board.

In a nutshell, when the piezoelectric sensor vibrates, the digital output changes from low to high and the analog output voltage ascends depending on the vibration intensity. The vibration amplitude ...

image: Figure 1. Schematic illustration of the overall concept for a wearable piezoelectric blood pressure sensor (WPBPS). view more Credit: KAIST Human Augmentation Nano Device Lab ...