Greaseweazle F7 Lightning USB PD Lite
Greaseweazle-compatible flux reader/writer: 34-pin and 8-inch 50-pin headers, USB-PD floppy power.
A Greaseweazle-compatible board based on the F7 Lightning design. It reads and writes floppy disks at the raw flux level using the official host tools and firmware. Usage notes are on the Greaseweazle wiki.
50-pin header for 8-inch floppy. Besides the usual 34-pin header (3.5" / 5.25"), the board has a 50-pin IDC header for 8-inch drives. No separate adapter is required.
USB-PD floppy power. A PD-capable USB-C charger can power the drive, so a separate PSU is not required. An STUSB4500 negotiates extra voltage and current; onboard regulators provide +5 V and +12 V on the 4-pin floppy power connector. A data-only USB port is not enough for drive power. The STUSB4500 can be programmed with this tool.
- STM32F730 (F7 Lightning class)
- USB-C with USB Power Delivery (STUSB4500) for board and floppy drive power
- Onboard +5 V and +12 V regulators for floppy power
- 34-pin and 50-pin IDC floppy data headers
- 4-pin floppy power connector
KiCad 9 sources, Gerbers, and JLCPCB production files are in git.
A simpler sibling without USB-PD: Greaseweazle F7 Lightning USB Lite.