how much NodeMCU GPIO Current Maximum, and NodeMCU standalone Power Consumption?

esp8266 nodemcu
ParkDyel picture ParkDyel · Oct 7, 2016 · Viewed 9.9k times · Source

Unfortunately, i can't find hardware Spec about NodeMCU.

so i want know about GPIO Current limitation, Standalone Power Comsumptionm, and board size.

or Can you share the link about NodeMCU Hardware Spec?

some page say that GPIO Current Maximum is 12mA, but I can't find any Confidently say.

Thanks.

Answer

Marcel Stör picture Marcel Stör · Oct 7, 2016

The datasheet (i.e. "Technical Reference") doesn't say but an Espressif employee answered that question in the their forums:

  1. 12mA here refers to the source current and sink current is greater than 12mA.
  2. 12mA is for per pin and each pin is the same.
  3. Drive capacity current of all GPIO pins total can be 16 x 12 mA.

And

The sink current of GPIO is about 20mA. The maximum source current of GPIO is about 12mA.

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