Extreme Power Saving of ESP8266 using External Interupt

Idea: Keep ESP8266 on OFF mode as default External 3.3V signal (can be short or long) arrives and turns ON ESP8266 ESP8266 wakes up and keeps itself awake until a task is perfomed Send MQTT data to server Put ESP8266 back to power OFF state Implementation: ESP8266 is in OFF state, GPIO0 is low 3.3V signal …

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