Battery powered WiFi button with ESP8266 - HTTP or MQTT?

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  • 40uA is moderately high for steady-state Sleep current, but if you don't want to change the hardware then software is your only recourse. You could use something like an ATTiny13a to control the power or EN line and drop to something around 200nA-2uA sleep current, but it's too late for that.

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NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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