Need help nodemcu sp8266

hello it’s me again , thanks at people to help me at the other post ;D , now i have other question , how can put in voltage in the module ? i need put the module in a room to take temperature

You can use a phone type charger and connect the USB to the board

Or, you could use a 5VDC power supply and connect the +5V from the power supply to the 5V pin, and connect the ground from the power supply to the ground pin of the NodeMcu.

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Or, you can apply 3.3v to the 3V3 pin, but 5v PSUs are easier to get hold of.

Whichever approach you take, don’t put the temperature sensor near either the PSU or the NOdeMCU, the heat from them will affect the accuracy of your readings.


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