OK THX for your answer

BITMAIN doesn't sell your chips BM1382 only?
greets
As far as I know the BM1382 isn't available to 3rd party developers. It would also have to be underclocked/undervoltage to work on a stick. Probably 12 GH/s.
If BM1382's are available for 3rd party development, I'd be interested to know that.
Even if they are, the real problem is the rest of the BOM cost...
-a[g