Bus Pirate V3 is a general-purpose bus interface that communicates with electronic devices in PC serial terminals, eliminating much of the early prototyping work in the case of or unknown chips. Check out Bus Pirate V4 vs. V3 comparisons. Protocols 1-WIRE, I2C, SPI, JTAG, Asynchronous Serial (UART), MIDI, PC keyboard, HD44780 LCD, and common 2-wire and 3-wire libraries for custom protocols. USB interface, USB power supply Pin withstand voltage 5.5 V Measuring probe with measuring range of 0-6V Frequency measurement range of 1Hz-40mhz 1kHz - 4MHz pulse width modulator, frequency generator Pull-up resistance for multiple voltages on a plate On-board 3.3V and 5V power supply and software reset Common macro commands SPI, I2C Simple USB firmware update boot program Usb → serial port bridge mode Low speed logic analyzer of 10HZ-1mhz AVRDUDE custom support The AVR STK500 V2 programmer supports Perl and Python scripts features in version Bus Pirate 4: 256K program space, 4 times faster than Bus PirateV3 Integrated onboard USB (faster) Data storage EEPROM storage Settings Software pull-up voltage selection: 3.3 V, 5 V or external power supply 2 additional I/O pins Multipurpose button. Color: Red Material: PCB Package Contents: 1 * module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.