Sparkfun Bus Pirate – V3.6A


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The Bus Pirate v3.6a is a tool for troubleshooting and communication between a PC and any embedded device. It supports various protocols and voltages from 0-5.5VDC, which saves time during early prototyping. The device is controlled by typing commands into a terminal on your computer and it also features a bootloader for easy firmware updates. The main components of the Bus Pirate are the PIC24FJ64 processor and a USB-to-Serial chip, and it has a labeled 0.1″ pitch 2×5 pin header for standardization.

Note: We sell a handy cable to connect the Bus Pirate to the system you are developing, debugging, or reverse engineering.

Note: This product is a collaboration with Ian Lesnet. A portion of each sales goes back to them for product support and continued development.


  • Supported protocols:
    • 1-Wire
    • I2C
    • SPI
    • JTAG
    • Asynchronous serial
    • MIDI
    • PC keyboard
    • HD44780 LCD
    • 2- and 3-wire libraries with bitwise pin control
    • Scriptable binary bitbang, 1-Wire, I2C, SPI, and UART modes
  • 5.5V tolerant pins
  • 6V measurement probe
  • 1Hz – 40MHz frequency measurement
  • 1kHz – 4MHz pulse-width modulator, frequency generator
  • On-board multi-voltage pull-up resistors
  • On-board 3.3volt and 5volt power supplies with software reset
  • Macros for common operations
  • Bus traffic sniffers (SPI, I2C)
  • A bootloader for easy firmware updates
  • Transparent USB->serial mode
  • 10Hz – 1MHz low-speed logic analyzer
  • Scriptable from Perl, Python, etc.
  • Access to PIC24FJ64 ICSP programming port



  • 1 x Sparkfun Bus Pirate – V3.6A
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