Power saving mode

[denis-stepanov]

Use of deep sleep to save power and allow operating on batteries.

Likely a WONTFIX in this project, as some features will have to be dropped and some others redesigned.

[denis-stepanov]

The main issue is that using ESP8266 deep sleep mode causes disconnection from Wi-Fi. Reconnection would take 1-3 sec, which will render the switch slow and unresponsive. The only viable option is to move away from Wi-Fi, i.e. to use some other signalling method, like Bluetooth LE, in combination with some hub connected to Wi-Fi. This would make it essentially a different project.

Closing as WONTFIX.

[denis-stepanov]

Actually... I learned that ESP8266 supports ligher sleep modes which maintain Wi-Fi connectivity. This could be interesting to investigate.