I just upgraded to 2.1.9(9), and its release notes lists one change as “Improves NTC sync by using multiple NTP servers and cycle through them if one is not available.”
How do you actually CONFIGURE those multiple NTP servers into OpenSprinkler so it can cycle through them? I can only see ONE spot for entering an NTP server. What am I missing?
Well, this is referring to pre-configured NTP servers: https://github.com/OpenSprinkler/OpenSprinkler-Firmware/blob/master/opensprinkler_server.cpp#L2146
previously it’s using just one, now the firmware can cycle through an array of servers if one fails. The user-configured NTP server is still just one, because this option is rarely used. If you want to customize the NTP servers using your own, you can modify the firmware source code and compile a new firmware.