ESP32 Bit Pirate

Web Tools:

Use with Bit Pirate or other compatible devices. For Bit Pirate, switch to the correct USB adapter mode before using a tool.

Web Serial Terminal interface for opening the ESP32 Bit Pirate CLI.

Web Serial

Serial terminal

Read logs, send commands and save serial sessions. Connect an ESP32, Arduino, Bus Pirate or any compatible USB-UART or CDC-ACM device.

 SPI Flash Programmer interface for reading and writing flash chips.

SPI Flash

SPI flash programmer

Identify, read and write SPI NOR flash chips with flashrom and a serprog-compatible adapter. Save firmware dumps straight to your computer.

 Logic Analyzer interface for capturing digital signal traces.

SUMP Logic

Logic analyzer

Capture digital signals with SUMP-compatible hardware and inspect the waveforms. Export your captures as VCD, CSV, raw binary or session JSON.

 SDR waterfall with diffuse packet-like bursts centered on 2437 MHz and a matching spectrum, with an illustrative 40 MHz RX span.

ESP32-S3 SDR · 2.4 GHz

ESP SDR

Wideband SDR covering roughly 2.2–2.8 GHz, with spectrum and waterfall views, peak and occupancy tracking, signal cleaning, and live signal inspection with the built-in ESP32-S3 radio.

 ESP Tool interface for flashing and inspecting ESP devices.

ESP Tool

ESP tool

Flash firmware, read NVS, extract littleFS, back up memory or erase an ESP chip. Merge binaries offline and work with standard ESP32 layouts or custom offsets.

 STM32 Tool interface for bootloader flashing workflows.

STM32 ST-LINK

STM32 programmer

Flash BIN or Intel HEX firmware, back up memory and erase STM32 targets. Connect through the ROM UART bootloader or an ST-Link adapter.

 AVR Programmer interface for avrdude flashing workflows.

AVR ISP

AVR programmer

Detect ATmega and ATtiny chips, read memory and write HEX files with AVRDUDE. An experimental tool for the ESP32 Bit Pirate AVRDUDE adapter.

 Bit Bang interface for remote GPIO, I2C and SPI control.

Bit Bang · BPIO2

Bit Bang controller

Control GPIOs, scan I2C devices and exchange SPI data with BPIO2-compatible hardware. Build visual sequences to repeat common operations.

 Python Lab interface for automating serial workflows.

Python · Pyodide

Python lab

Run Python with Pyodide and control Bit Pirate over Web Serial. Start from the ESP32-Bit-Pirate-Scripts examples or write your own CLI and BPIO2 scripts.

 A new browser tool idea ready to be shared with the project.

Ideas & requests

Something missing?

Have a tool in mind? Open a GitHub issue with your device or protocol, what you need to do and any useful references.
Binary analysis interface with a hex dump, detected file signatures and a firmware region map.

Analysis follow-up

Inspect hardware data

Use these browser tools after captures, serial logs or firmware reads to inspect bytes, extract ranges, parse structures and study small executable payloads.

Compatibility and Usage Tips

Works with ESP32 Bit Pirate and compatible protocol devices

These browser tools are built for ESP32 Bit Pirate workflows, but they also work with other hardware that exposes the same open interfaces and protocol adapters.

Supported Browsers

Web Serial works in Chrome, Firefox, Edge, Opera and compatible Chromium browsers on desktop. Safari does not currently support Web Serial hardware access.

Supported Hardware

The operating system must recognize your ESP32 board, USB UART adapter, CDC-ACM device or ESP32 Bit Pirate USB mode before the browser can request access.

Linux Serial Access

If serial access fails on Linux, grant your user access to the device with sudo setfacl -m u:$USER:rw /dev/ttyACM0, then reconnect the board.

Local Privacy

Serial logs, flash data and logic analyzer captures are processed locally by these static pages. The application does not upload captures to a server.

Open-source hardware debugging in the browser

ESP32 Bit Pirate is an open-source firmware that turns compatible ESP32-S3 devices into a multi-protocol hardware hacking and debugging tool inspired by the Bus Pirate.

It supports serial and web command-line workflows for UART, I2C, SPI, 1-Wire, 2-Wire, 3-Wire, CAN, JTAG/SWD, infrared, Wi-Fi, Bluetooth, Sub-GHz, RFID, RF24, FM and USB adapter modes.

These web tools strengthen the ESP32 Bit Pirate ecosystem by making common embedded workflows discoverable from a secure browser page: serial console access, firmware memory work, digital logic capture and protocol investigation.

The same hardware can switch between protocol mode and adapter-style workflows, so you can move from probing a bus to capturing waveforms, reading memory or programming without changing tools.

ESP32 Bit Pirate logo.

Serial and Web CLI

Use the same command structure over USB serial, Wi-Fi web interface or browser-based Web Serial workflows.

Protocol Workbench

Scan, sniff, send, script, dump, explore wired and wireless protocols.

Firmware and Memory

Work with EEPROM, flash, smartcard, SIM, iButton, RFID tag, firmware dumps.

ESP32 Bit Pirate open-source repository Supported protocols and commands Compatible ESP32-S3 boards USB adapter modes and workflows

External Bit Pirate Projects

Useful companion projects for extending hardware and automating ESP32 Bit Pirate workflows.

Technology Credits

These tools build on open browser APIs and open-source projects that make this possible.