Github - https://github.com/simoninns/BeebSCSI
BeebSCSI documentation - https://www.domesday86.com/?page_id=689
The new design also allows for right-angled IDC and other headers to be used (in order to fit better in the Elk AP5 expansion as well as other mounting applications where a <12mm height is preferable).
I'll be making a 2_4 release on Github shortly (the board is firmware compatible with the 7_5 version and the 'unofficial' BeebSCSI 'mini' version, but here are the highlights of the new PCB design:
- Smaller PCB (66 x 51mm)
- Four M3 mounting holes (fits both Master AIV slot as well as external case mounting)
- Straight and right-angle configuration (all sockets and headers can now be right-angled if required)
- Single JTAG programming chain with shared header (between AVR and CPLD)
- Support for Tag-Connect programming adapters
- Fiducial markers for pick-and-place manufacturing compatibility
- All components on top-copper layer
- Improved silkscreen with better component orientation markers
- Design rebuilt using KiCAD rather than (closed-source) EagleCAD
- New microSD socket (provides overhang of the microSD card for better internal and case mounting options)
- All active and passive component SMT (except headers and connectors)
- JST-EH power connector to prevent incorrect cable orientation
- USB to AVR header with required USB support components (to support future expansion)
- All SMT passives now 0805 footprint