News Summary

• ESP32 turned into an software-defined radio (SDR) thanks to a hidden baseband mode.
• Most modern radio chips use SDR functionality internally, they just don’t expose it to the world.
• As part of the QA tests in manufacture they run diagnostics on all the various parts of the device, including the SDR front end.
• This is pretty exciting from a hardware hacking perspective.
• It’s like our little version of a Precambrian explosion or a tech revolution.