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Ultrasonic driver V1

Overview

In the lower left corner of the picture, the power is input, the DIP switch controls the voltage, the variable resistor adjusts the 555 oscillation frequency, the audio interface inputs audio, the power output port outputs typec power, and the ultrasonic emission interface.

Finally, the audio can be transmitted in a directional manner. Referring to the design of https://www.tristate.ne.jp/parame.htm, the audio can be modulated to a carrier near 40khz and driven through the H-bridge. With typec power supply interface, maximum input voltage is 20v.

Design Files

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Update:2025-05-13 06:21:25

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