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By fabiom91
Hi, I build a wifi DHT sensor which is working fine when connected to my USB port on my laptop but start performing bad when connected to a power bank (the one for phones and tablets) via usb.

My power bank specifications are:

- Capacity : 2500mAh

- Battery power : 9.25Wh (max)

- Input : 5V - 1.0A

- Output : 5V - 1.0A

What are the SparkFun ESP8266 Thing Dev requirements for this kind of circuit and how do I find out them?

this is my circuit: