This project demonstrates decoding NEC infrared (IR) remote control signals using the ATTiny13 microcontroller. It is based on the tutorial AVR ATTiny13 NEC IR Protocol Remote Control by Nguyễn Văn ...
Simple ultrasonic antispy voice recording jammer based on ATTINY13 / ATTINY85 with resistor ladder based DAC and 2 transistors (or PAM8403 module) driving piezo ultrasonic transducers. It prevents ...