1.3 KiB

Future plans for PowerBook adapter for BlueSCSI

April 2021

v1.1 is working well so I don't expect any majour changes for a while.

v1.2 (possible maintenance version)

Plans for a v1.2 (maintenance) may include:

  • Jumper to toggle the activity LED
    • So you can solder the LED and resistor, but disable it later if you prefer
  • Break out power LED
    • Provide a power LED (and a jumper toggle) breakout if an external power LED is desired
  • Replace J4 & J5 with DIP switches or a single DPDT switch

v2.0 (possible full redesign)

If I continue to develop project in the future, I plan on a full redesign.

  • Use termination ICs instead of resistors
    • Lower power consumption
    • More accurate termination voltage
    • Switchable termination resistance (110-ohm or 2.5k-ohm) for short busses
  • Attach J1 & J2 via the PCB edge to make it more like how an actual hard drive connects
  • Less-expensive Micro SD card slot
  • Automatic switching between TERMPWR, MOTORPWR or USB Power

If I want to fork the actual BlueSCSI firmware, I would like to add:

  • Separate LEDs for read and write activity
  • Read TERMPWR and MOTORPWR voltages and report them on the debugging connector
  • LEDs to indicate with SCSI ID is being accessed
  • Support OLED debugging display