Blue SCSI looks interesting, thanks for the tip: https://bluescsi.com/v2
BlueSCSI's mission is to provide a low cost, open hardware and software SCSI solution for retro computer enthusiasts to breathe life back into their vintage computers. BlueSCSI's build is as simple and friendly as it gets, catering to novices and experts alike. We started three years ago with a few enhancements to ArdSCSIno and there are now several variations using different hardware.
* BlueSCSI v2 is based on the Raspberry Pi Pico microcontroller and a fork of ZuluSCSI's SCSI2SD code
* It is open source, open hardware, and open design.
* It is fast, pushing 10MB/sec.
Here's some additional discovery - Looks like SCSI2SD has given way to ZuluSCSI --https://www.scsi2sd.com/index.php?title=SCSI2SD
1 September 2022 - Due to ongoing global semiconductor component shortages, we're unable to produce more SCSI2SD V5 and V6 boards at this time. As a result of these shortages, Rabbit Hole Computing has developed an alternative SCSI emulation product, ZuluSCSI. Check out ZuluSCSI instead. It's SCSI command handling code is inherited from SCSI2SD V6, and it performs significantly better than SCSI2SD V5 in nearly all benchmarks. ZuluSCSI is a great alternative to SCSI2SD, and available for purchase today from Rabbit Hole Computing
Looks like there is also a CF2SCSI but I can't find any for sale: https://cf2scsi.com/
Board size: 2.5” Form factor – 2.8”x3.9”.
Compact Flash: Standard 3M header for Type 1 & 2 cards.
CF Capacities Supported: ~ up to 256GB (MLC) for removable drive and non mission critical applications and up to 64GB (SLC) for fixed disk heavy read/write mission critical applications.
Power: 5 Volts only @ 0.8 Watt (Typical) + CF requirement.
Power connector: Standard 2.5 Scsi Hard Disk drive type SCSI-1 and 2 Compatible. 50 pin SCSI DIL 0.1” Connector.
SCSI transfer rate: 10Mbytes/second.