3d PCB sensor and buzzer

A piezoelectric diaphragm works as both a touch sensor and buzzer (actuator).

Milled PCB pieces

3d PCB assembly

Sensor and buzzer (actuator) kits

https://video.wixstatic.com/video/16a8a2_69464849fc414fafab8cf28d7f93e9e7/1080p/mp4/file.mp4

PCB CNC milling

YouTube:

CNC milling PCB 3d assembly and piezoelectric sensor buzzer

PZT buzzer diaphragm disk:

Piezoelectric PZT diaphragm 20x0.2 12x0.2 | Piezo Active Tech

CCL plate:

PCB CCL mill | Piezo Active Tech

PCB CCL Copper Clad Laminate board | Piezo Active Tech