Could the time be retrieved from the wi-fi router on wich device is connected ? That would be awesome !
A lot of projects may not connect through a router, they may be simple WiFi points directly to the WiFi of the mobile device, such as ESP8266 boards.
]]>You can connect to the device from different phones with different time.
Are you saying that you can do this simultaneously ? How can this work ? Surely the data coming into your sketch will be in conflict all the time ? I can't envisage a scenario in which you would want to do that.....
You need to have a way to choose what time you need.
I think it most likely the phones would have the same time, so the time from any connected phone or tablet would be sufficient for most people's needs.
]]>The phone has this info, the controller may need it, so it would be great if this info could be included in the GUI interface from the phone/tablet to the controller. Yes, I understand that the collection of this data may be different for Android and iOS, but I'm sure there would be a way around this.
Having this info available would mean that the control system would not need a battery-backed RTC, as the phone would continuously update when in a reception area, and I'm sure they continue to maintain time reasonably accurate time when they are not.
In my case accuracy to 1 second would be enough, but even if it were "last known" date and time it would be sufficient.
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