I have bough countless 128MB 256MB 512MB 1GB and 2GB cards and none work with the SD card interupter i have. Pain in the ass gave up on it a while ago.
There's still a problem with a humm in the arc with the current board, im ordering new fet's and will be sending a kit to Sigurthur to fault find soon.
Ive also have 2 other projects of interest getting ready to go, 1 is a full audio modulated flyback driver and the other is a 24V SSTC, i have...
Its in the works, just need this whine to be fixed and ill go into production, Sigurthr maybe just the man for the job.
I also have parts for a SSTC kit that i may release after.