gogobd / directional_speaker

An ultrasonic directional speaker (aka. Parametric Speaker)

Ultrasonic Directional Speaker for under $20

This repository contains:

1. C++ code for the STM32 Microcontroller
2. KiCad Schematic image for Circuit
3. KiCad Schematic image for Transducer Array

For building a Laser Directional Speaker, also known as a Parametric Speaker.

Related Video https://youtu.be/9hD5FPVSsV0

Parts List:

• (17) TCT-16T 40Khz Ultrasonic Transducers TCT40-16T - https://www.aliexpress.com/item/32258...
• (1) STM32F103C8T6https://www.aliexpress.com/item/32862...
• (1) LM358 (DIP-8) - https://www.aliexpress.com/item/32972...
• (1) TC4427A - https://www.aliexpress.com/item/32967...
• (1) PJ-307 Line-in Audio Jack - https://www.aliexpress.com/item/10000...
• (1) MT3608 DC Step-Up Module (optional) - -https://www.aliexpress.com/item/40001...