I am the Greaseweazle original designer, and Zero Flux Development is the business side of my personal projects.

This listing includes a 3D printed case with "Greaseweazle" motif in white, designed for me by Tom Dalby.

Greaseweazle allows versatile floppy drive control over USB. By extracting the raw flux transitions from a drive, any disk format can be captured and analyzed - PC, Amiga, Amstrad, PDP-11, musical instruments, industrial equipment, and more. The Greaseweazle also supports writing to floppy disks, from a range of image file formats including those commonly used for online preservation (ADF, IPF, DSK, IMG, HFE, ...).

Greaseweazle V4.1 is the very latest version, updating the V4 design with new features:

• Larger form factor with stronger mounting holes
• Modern USB-C connector
• Input protections (ESD, over-current)
• USB power isolation, allows Greaseweazle to be powered by external PSU along with drive(s)
• Latest board design by George R. Mezzomo

Other features:

• Reads and writes 3", 3.5", 5.25", 8" disks (with suitable drive and cable)
• Buffered outputs, for communicating with older 5.25" and 8" disk drives
• Integrated power connector for directly powering most 3.5" disk drives
• Write-enable jumper can be removed for safer preservation of precious vintage disks
• Supports flippy-modded 5.25" drives
• Supports Disk-Change detection as used by Rob Smith's integration into the WinUAE Amiga emulator
• 3 user-definable outputs (eg. 8" interface REDWC signal)
• 100% factory tested, and tested again by me before shipping

More information and documentation on my wiki.

This listing includes:

• Greaseweazle V4.1 device
• Case with logo
• 30cm 5-volt power lead (suitable for powering most 3.5" floppy drives direct from the Greaseweazle)

• A disk drive (for example a PC 3.5" or 5.25" drive)
• A floppy ribbon cable (typically you want a standard PC cable with 'twist' on pins 10-16, to communicate with a PC floppy drive)
• Optional: Floppy drive power supply (not needed for most PC 3.5" floppy drives)

Minimum Supported OS: Windows 10/11, Ubuntu 22.04, macOS 13.

Most up-to-date versions of Linux distributions should also work (but less tested).

International buyers: I no longer ship internationally.