ESP32 Bit Pirate: Open-Source Multi-Protocol Hacking Tool with Web CLI

ESP32 Bit Pirate is open-source firmware that transforms ESP32-S3 boards into a Swiss Army knife for hardware hacking, drawing direct inspiration from the classic Bus Pirate. It handles an unusually broad range of wired protocols (I2C, SPI, UART, 1-Wire, JTAG, CAN, USB HID) alongside radio stacks including Bluetooth, Wi-Fi, Sub-GHz, RFID, and even SIM card interaction, all driven through either a USB serial terminal or a browser-based CLI over Wi-Fi.

Beyond raw protocol speaking, the firmware bundles sniffers, EEPROM and flash dumpers, an 80+ protocol IR “device-be-gone” function, deauth and nmap-style Wi-Fi tools, and scripting in both Bus Pirate bytecode and Python. A web flasher installs it in one click on supported boards like the M5Stack StickS3, AtomS3, and Cardputer, and any ESP32-S3 with at least 8 MB of flash can run it with pin remapping. Optional hardware add-ons extend it with 5 GHz Wi-Fi and a docking station for legacy Bus Pirate adapters.

The project frames itself as an educational and diagnostic tool, with explicit warnings about voltage limits and unauthorized RF transmission. Its appeal is consolidating capabilities that previously required a drawer full of separate devices — logic analyzer, SPI programmer, Flipper-style sub-GHz toy, USB-UART dongle — onto cheap, widely available ESP32-S3 hardware.