ESP-SDR

A project called ESP-SDR demonstrates using Espressif's ESP32 chips to capture raw IQ samples, effectively turning low-cost Wi-Fi hardware into a software-defined radio front end. The ESP32's ability to stream in-phase and quadrature data opens the door to cheap RF experimentation and wireless research. Readers are discussing the technical achievement of squeezing raw capture out of hobbyist-grade silicon, with interest in what applications this enables for spectrum monitoring and signal analysis.