Tom Horton | DiY IoT | Building a Battery-operated ESP8266 Sensor Module
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Can i power this 'nodemcu esp8266 v3' using 7.4v or 8v power source in its microusb. actually i have two li-ion battery(3.7v) so , i am going to connect this battery in
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Design your own ESP Board for Battery Powered & Low Power IoT Applications - YouTube
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Tom Horton | DiY IoT | Building a Battery-operated ESP8266 Sensor Module
ESP8266 Thing Hookup Guide - SparkFun Learn
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![RELEASE] DIY Light Sensor with mains and battery power (ESP8266, NodeMCU, D1 Mini) - Connected Things - SmartThings Community](https://global.discourse-cdn.com/smartthings/original/3X/8/c/8c40b85f0d8574615060b43d9bd2b69289f51219.jpeg "RELEASE] DIY Light Sensor with mains and battery power (ESP8266, NodeMCU, D1 Mini) - Connected Things - SmartThings Community")