SCSIknife - A compact and versatile SCSI emulator.
SCSIknife is a ZuluSCSI™ Pico OSHW derivative, compatible with ZuluSCSI™ firmware.
SCSIknife has the same compact footprint as a 2.5" hard disk drive, yet provide a rich SCSI connectivity with a male DB25 connector, HE-10 50-pin and 50-pin 2.5" for laptops. Two SD card sockets can accomodate standard SD cards as well as micro SD cards (only one type can be used at a time). A HE-10 10-pin connector expose the SD card signals in order to extend the SD card connector away from SCSIknife.
SCSIknife require 5.0VDC ± 0.5V which can be supplied by the SCSI termination, the 4-pin Berg style connector, the 2.5" SCSI connector, or USB-C. For host systems not providing SCSI termination power on the bus, SCSIknife can backfeed termination power by enabling the "TPWR" switch.
The HE-10 10-pin SD card extension connector use the following pinout:
Status LED is connected to RP2040 GPIO16
Error LED is connected to RP2040 GPIO25
SCSI DB25 connector is male, but can be replaced with DB25 female if soldered on the underside of the board.
SCSIknife is 100% compatible with the ZuluSCSI™ firmware. As such, flashing instructions can be found there
To update the firmware, press and hold the “Bootloader” button before plugging in the USB C connection to a computer. SCSIknife will appear as a drive on the desktop. Drop the new firmware file in .uf2 format on the disk and SCSIknife will automatically update and disconnect itself upon completion.
This PCB was designed with Adobe Illustrator, and exported as SVG files.
These SVG files are then converted to Gerber using the following tools:
- Gerbolyze
- svg-to-gerber: gerbolyze wrapper + drill file generation
If you need to re-generate gerbers:
# Illustrator uses 72 DPI instead of the usual 96 for SVG files
svg-to-gerber.py SCSIknife/svg SCSIknife/gerber 72
# If you end up with a negative gerber on some layers,
# re-run the svg-flatten command seen in logs without -f.
# It seems to behave differently on different setupsSCSIknife is based on ZuluSCSI™ Pico OSHW, which can be found here:
ZuluSCSI™ is a registered trademark of Rabbit Hole Computing.
SCSIknife inherits the CERN-OHL-S-2.0 license from ZuluSCSI Pico
See license.txt