DIY Ultrasonic Audio Laser (Directional Speaker Old School)

DIY Ultrasonic Audio Laser (Directional Speaker old School)

Build your own ultrasonic audio laser, otherwise known as an ultrasonic parametric speaker that lets you beam sound to distant places like a laser beam. Total cost is under $20!

Parts List:
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(17) TCT-16T 40Khz Ultrasonic Transducers TCT40-16T - https://nl.aliexpress.com/item/32258563531.html?gatewayAdapt=glo2nld
(1) STM32F103C8T6 https://nl.aliexpress.com/item/32862385518.html?gatewayAdapt=glo2nld
(1) LM358 (DIP-8) - https://nl.aliexpress.com/item/32972282817.html?gatewayAdapt=glo2nld
(1) TC4427A - https://nl.aliexpress.com/item/32967076106.html?gatewayAdapt=glo2nld
(1) PJ-307 Line-in Audio Jack - https://nl.aliexpress.com/item/1000006982803.html?gatewayAdapt=glo2nld
(1) MT3608 DC Step-Up Module (optional) - -https://nl.aliexpress.com/item/4000155588081.html?gatewayAdapt=glo2nld
Code and schematics:
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https://github.com/gururise/directional_speaker

0:00 - 0:56 Intro
0:57 - 2:51 History
2:52 - 5:05 Implementation
5:06 - 10:26 Part Details
10:27 - 10:57 Circuit
10:58 - 12:57 Usage
12:59 - 13:53 Conclusion

Source : https://www.youtube.com/@MeanGeneHacks/videos