Quantity   Component name
1 × Arduino Uno
5 × DRV2667 Piezo Haptic Flex Module <a target="_blank" rel="noopener noreferrer" href="https://hackaday.io/project/3086-piezo-haptic-flex-module">https://hackaday.io/project/3086-piezo-haptic-flex-module</a>
5 × Piezo Transducers
1 × i2c Switch Flex Module