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Electronics Tutorial: How to make power supply for Nodemcu ESP8266 wifi module using a Regulator - YouTube
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ESP8266 - Li-Ion Battery Rechargeable Battery Power Solution : 4 Steps (with Pictures) - Instructables
![I want to connect a 3.7 v battery to a node mcu ESP8266 but I don't know if I should connect the battery to Vin or to 3.3v for the voltage regulator I want to connect a 3.7 v battery to a node mcu ESP8266 but I don't know if I should connect the battery to Vin or to 3.3v for the voltage regulator](https://i.redd.it/29tb0welkh961.jpg)
I want to connect a 3.7 v battery to a node mcu ESP8266 but I don't know if I should connect the battery to Vin or to 3.3v for the voltage regulator
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