Link for the lurkers https://github.com/evilsocket/pwnagotchi
Pwnagotchi is an A2C-based “AI” leveraging bettercap that learns from its surrounding WiFi environment to maximize the crackable WPA key material it captures (either passively, or by performing authentication and association attacks). This material is collected as PCAP files containing any form of handshake supported by hashcat, including PMKIDs, full and half WPA handshakes.
But idle still would run much more than 15w. There a very good compilation google sheets for the most efficient X86 cpus, but once you start factoring hdds and ssds, it’s only natural to go higher (20w-30w) at least. That’s at least double than rpis