Simple ultrasonic antispy voice recording jammer based on ATTINY13 / ATTINY85 / ATTINY45 / ATTINY25 with audio amplifier PAM8403 / TPA3116D2 module driving piezo ultrasonic transducers and AD9833 ...
Simple ultrasonic antispy voice recording jammer based on ATTINY13 / ATTINY85 with audio amplifier PAM8403 / TPA3116D2 module driving piezo ultrasonic transducers. It prevents from unauthorized human ...