Enhancing An FM Transmitter’s Firmware using ATmega48

This hack is about rewriting the firmware of PLL FM transmitters based on AVR microcontrollers to add more functionalities. They’re commonly available on eBay from various sellers and for prices ranging from $40 to $80, depending mostly on the RF output power. If you don’t know if a similar transmitter is based on an AVR

Enhancing An FM Transmitter’s Firmware using ATmega48 is a post from: ATMega32 AVR