With free case!

Latest version of the Greaseweazle.

Including designed case

Changed compared with the previous v4.0 


  • USB-C connector
  • New form factor with better mount holes
  • Improved input protection
  • USB power isolation jumper.

         More information can be found here: link


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, ...).


Video that explains what the GreaseWeazle can do:



Software can be found here:



Greaseweazle V4.1 is the latest version, updated for mass production and with the following 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 floppy-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 before shipping


More information and documentation on wiki:



This listing is for the Greaseweazle V4 device only. You will additionally require:

  • - 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)
  • - Floppy drive power cable, or power supply
  • - Recommended host OS: Windows 8, Windows 10, Ubuntu Linux.