HardwareHacker Newsabout 5 hours ago
ESP32 Chips Found to Have Hidden SDR Capabilities
3 min read
Researchers found an undocumented ESP32 feature that bypasses WiFi and Bluetooth to capture raw IQ baseband samples, turning several chips into software-defined radios covering 2.2 to 2.7 GHz, plus 4.8 to 6.0 GHz on the ESP32-C5. The ESP32-S31 can stream continuously at up to 16 MS/s over Gigabit Ethernet, with a SoapySDR driver for GNU Radio and gqrx coming soon.
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