Just encountered this thread again, and it seems I haven’t mentioned in this threads that the OS 3.0 released earlier this year is an ESP8266-based OpenSprinkler, and the OpenSprinkler firmware has been modified to support this new hardware:
https://github.com/OpenSprinkler/OpenSprinkler-Firmware
I see a lot of references to EtherCardW5100 in this thread — I am a bit confused: does the custom hardware build here include a W5100 Ethernet controller? That’s for wired Ethernet (W5100 chip). If not, what’s the reference to W5100 for?