tpa3116d2

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mcore1976 / antispy-jammer

Simplest ultrasonic ANTISPY voice recording jammer based on ATTINY13 / ATTINY85/45/25 / ARDUINO with PAM8403 / TPA3116D2 module driving piezo ultrasonic transducers (and optionally AD8933 signal generator)

arduino ultrasonic diy attiny85 avr-gcc ultrasound digispark jammer 25khz ad9833 attiny13 pam8403 resistor-ladder microphone-jammer voice-assistant-jammer ad8933 pam8610 tpa3116d2 voice-suppressor

Updated Aug 3, 2025
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mcore1976 / rp2040-parametric-directional-speaker

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This is the cheapest and the simplest in the world Parametric Directional Speaker based on RP2040 board, TPA3116D2 amplifier and set of 10+ ultrasonic transducers

raspberry pico rp2040 raspberry-pico rp2040-zero tpa3116d2 parametric-directional-speaker ultrasonic-speaker directional-speaker xh-m543 ultrasound-speaker parametric-speaker ultrasonic-microphone parametric-microphone

Updated Aug 3, 2025
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