Bus Pirate v3.5

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Project Summary
Name: Bus Pirate v3.5
Buy it: Get one for Superseded by v3.6 at Seeed Studio
Price: Superseded by v3.6
Status: Mature
Manufacturing: Discontinued
Forum: Bus Pirate v3.5 Forum
BusPirate-v3.5-W490.jpg
  • Superseded by Bus Pirate v3.6

New in v3.5

  • Shrouded header
  • Resized to fit a case
  • Simplified hardware design with all the same features as v3

Contents

Prototypes

BusPirate-v3.5.jpg

BusPirate-W490.jpg

Bus Pirate v3a (L), v3b (R), v4 (BACK)

Bus Pirate v3.5 is exactly the same a Bus Pirate v3b. We added a much requested shrouded header, and made tweaks to keep manufacturing costs down.

  1. v3.5 has a bigger PCB, the same size as v4. Both boards will fit the same inexpensive acrylic case.
  2. The IO header is centered and has a shroud - the plastic cover thing that makes it easy to get the probe cable on right (not pictured because we couldn't find one)
  3. Most resistors were consolidated into resistor packs. The arrays are cheaper, and there's three fewer pick and place movements for each array, nine less to assemble v3.5.
  4. All parts reduced to 0603, CD4066 (IC3) changed to SSOP.
  5. Test pins shorted to indicate v3.5. The firmware knows if it runs on a v2.5/3a,v3b, or v3.5 PCB. Not that it matters at all.

The first batch of 500 Bus Pirate v3.5s is extra special. Seeed has 500 SOIC PIC 24Fj64GA002s sitting around so we made the first board with an SOIC footprint. These are known to be revision B5, an update to A3 used in our first batch of Bus Pirates, and the reason we use software I2C libraries.

Resources

Schematic

BusPirate-v3.5a-SSOP.sch.png

PCBs

Brd-BusPirate-v3.5.png

v3.5a SSOP PCB

Pcb-BusPirate-v3.5-SOIC.png

v3.5 SOIC PCB (bigger PIC chip)

Partlist

Partlist
PartQuantityValuePackage
C1-C660.1uFC603
C7,C8,C931uFC603
C10,C11210uFSMC_A
I/O1HEADER2X5-SHRD-PTHPINSHRD_PTH_2X05
IC11PIC24FJ64GA002SSOP28
IC21FT232RLSSOP28
IC314066TSSOP14
ICSP1HEADER_PRG_PIC_ICSPHEADER_PRG_1X05_ICSP_B
J11CONN_USBCONN_USB_MINI-B@1
L11700mA+ ferriteWE-KI_0805_B
LED1-LED2,LED2A-LED2,LED3A-LED2,LED4A,LED4A8LED CHIP-LED0805
R1,R522KR603
R2,R3,R4,R641K1R603
RN1,RN2,RN3310kRN8P-4R-CRA06S
VR1,VR22MCP1801T-3302I/OTSOT-23-5
VR31MCP1801T-5002I/OTSOT-23-5

The latest sources and distributors are in the master partlist. See something missing? Please let us know.

License

  • Hardware: CC-0
  • Firmware: CC-0
  • Bootloader: GPL V3.0