Shane
Published © GPL3+

Ultrasonic Sound Gun (Parametric Speaker)

I built a gun that shoots out a narrow beam of ultrasonic audio. The sound can only be heard by people inside the narrow beam.

IntermediateFull instructions provided4 hours4,234
Ultrasonic Sound Gun (Parametric Speaker)

Things used in this project

Hardware components

Dual H-Bridge motor drivers L298
SparkFun Dual H-Bridge motor drivers L298
Any mosfet will work to amplify
×1
Ultrasonic Sensor - HC-SR04
SparkFun Ultrasonic Sensor - HC-SR04
Just the ultrasonic transducers, you can desolder them or by them seperately
×1
555 Timers Ultra Low Voltage
Texas Instruments 555 Timers Ultra Low Voltage
×1
CSR8635 Bluetooth Audio Module Breakout
Voidbox Industries CSR8635 Bluetooth Audio Module Breakout
Any Bluetooth audio module will work
×1
Capacitor 100 nF
Capacitor 100 nF
×1
Capacitor 10 pF
Capacitor 10 pF
Add until tuning is correct
×1
Resistor 1k ohm
Resistor 1k ohm
×1
Resistor 100k ohm
Resistor 100k ohm
×1
resistor 2k
×1
Toggle Switch, Toggle
Toggle Switch, Toggle
×1
Pushbutton switch 12mm
SparkFun Pushbutton switch 12mm
×1
LED (generic)
LED (generic)
×1

Hand tools and fabrication machines

3D Printer (generic)
3D Printer (generic)

Story

Read more

Custom parts and enclosures

1

Case

2

Case

3

Case

Schematics

555 Timer Circuit

Complete Circuit

Credits

Shane

Shane

2 projects • 1 follower
Thanks to CodeParade.

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