Very good, I will bother you to join the beta program when I will be ready, by now you could start change your Antminers config to accept API requests from your controller (raspberry of what else it will be), check this outdated reference
https://github.com/michelem09/minera/wiki/Network-mining-devicesThis will be required by the new Minera too.
I think that's the default now on S3/S5/S7 (I don't have a S9 to try)
here's the /config/cgminer.conf on a default S7:
"api-listen" : true,
"api-network" : true,
"api-groups" : "A:stats:pools:devs:summary:version",
"api-allow" : "A:0/0,W:*",
"bitmain-use-vil" : true,
"bitmain-freq" : "700",
"bitmain-voltage" : "0706"
Ooooh great, I didn't know that. Thanks