Product Description
Flexible apiezo speaker Balloon for science project:
1. a balloon
2. a flexible piezo film with Cu/Ni electrode, about 15 cm x 10 cm. audio sound is better than ITO electrode due to its better electrical conductivity
3. an amplifier to power the piezo speaker with 9 V battery
4. all connection cables to the audio output of laptop
To check the audio quality, please visit our youtube channel:
https://www.youtube.com/channel/UCv-1VvjDijkdf76cZVACvEQ/videos?view_as=subscriber