![]() ![]() A clock is supplied by an external 12MHz quartz crystal (X1) and two 18pF capacitors (C7 and C8). The PIC has an internal 2.5volt regulator that powers the core, it needs a 10uF capacitor (C15) on the VCORE pin. All the PIC power supply pins (VDD) are decoupled by 0.1uF capacitors (C2,C4,C9). On-chip USB speeds up the data connection considerably, and gives optional USB On-the-Go capability.Ī 3.3volt regulator (VR1) powers the PIC from the 5volt USB supply, it needs a 1uF capacitor (C12) to stabilize the voltage output. It has 4 times more storage space, and twice the memory of chip used in Bus Pirate version 3. USB OVERDRIVE KNOWN PIRATE CODESchematic and PCB were designed with the freeware version of Cadsoft Eagle, download the latest project files from our Google Code project page or look for a release package.īus Pirate v4 uses a beefy PIC24FJ256GB106 microcontoller (IC1). USB OVERDRIVE KNOWN PIRATE FULL SIZEThank you to everyone who contributed to the development of Bus Pirate v4.Ĭlick for a full size schematic image. Hundreds of contributors have made the Bus Pirate one of the best known open source hacking tools. Each feature was added because it solves a real-world problem. We hacked the Bus Pirate together as we worked on different projects. The code is all public domain, so you can reuse it in your own project without restrictions. It also has a ton of other stuff we need all the time like power supplies, voltage and frequency measurement, pull-up resistors, and more. It's a known-working (usually) reference implementation of a protocol, and you can use it to learn a new chip before writing any code. The Bus Pirate speeds up development when you're working with a new chip. Commands typed into a computer are sent to the chip, any reply is displayed on the computer screen. The Bus Pirate is a simple way to talk to many of them from a computer. Small sensors and other microchips talk many different protocols (1-Wire, I2C, UART, SPI, etc) through different numbers of wires. ![]() You can get a Bus Pirate v4 for $40, including worldwide shipping. v4 will continue to improve, and we'll let you know when we think it is the go-to hardware. If you want proven goodness we still recommend the v3, it is actively developed and will be manufactured for the foreseeable future. Pull-up voltage selections: 3.3volt, 5volt, or external supplyīus Pirate v4 is new and shiny, but it will lag behind the trusty v3 for a while.More room was the main goal, but we can pull off some other fun things with the resources on the bigger chip: We didn't want to run out of space again soon, so we used a PIC 24FJ256GB106 with 256K of space. It was time for new hardware based on a new chip. Last year we stuffed so many features into the firmware that we used all the space. Bus Pirate v3, and all previous Bus Pirates, are based on a chip with 64K of program space. ![]()
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