# Bus Pirate

> Bus Pirate firmware turns v3 and v4 boards into terminal-controlled tools for investigating electronic buses. It provides SPI and I2C traffic sniffers, a low-speed logic analyzer and scriptable bitbang, 1-Wire, I2C, SPI and UART modes.

- Type: Tool
- Targets: Protocol
- Category: Protocol analysis tools
- Relationship: Foundation tool
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/ElderlyPirate/Bus_Pirate>
- Primary source: <https://github.com/ElderlyPirate/Bus_Pirate/blob/44574ce2ea1eec4632ed2efaf06ae99ffe426fe6/README.md>
- Catalog page: <https://awesomerea.org/resources/bus-pirate-v3-v4/>
- Record JSON: <https://awesomerea.org/resources/bus-pirate-v3-v4/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/bus-pirate-v3-v4/index.md)

## Requirements & limits

- **Prerequisites:** Bus Pirate v3.x or v4.x hardware.
- **Scope:** Logic analyzer capture is specified at 10 Hz to 1 MHz.
- **License:** Code from Dangerous Prototypes is released under CC0; some included files have other licenses.

## Primary sources

1. <https://github.com/ElderlyPirate/Bus_Pirate/blob/44574ce2ea1eec4632ed2efaf06ae99ffe426fe6/README.md>
2. <https://github.com/ElderlyPirate/Bus_Pirate/blob/44574ce2ea1eec4632ed2efaf06ae99ffe426fe6/Documentation/bitbang.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.