ESP8266 Community Forum

Hi all,
I have a NodeMCU and currently I'm using Arduino IDE for develop my IoT gadgets.
The goal Is that my NodeMcu retrieve, via the DHT22 sensor, temperature and humidity and send this information to my web server raspberry and store that.
Well, at the moment I have not any problem with this When the NodeMcu is under the USB wall charger .... but, when I use the power bank as a power supply, NodeMcu run just once correctly ...
Why? There is a best practice? It is possible to power supply Esp8266 NodeMCU whit power Bank (5v micro usb)?
Thanks a lot in advanced and I apologize for my english ... XD

grad

Hi, it's common for power bank devices to switch off if the current drain is low (which is equivalent to your phone or whatever being fully charged)

This usually takes about 30 seconds. This might explain your problem?

Ian

Yeah! Thanks