I'd like to deploy my project so I'm looking for a way to power the nodemcu. I'd like to know if there's a way to power it with a 9V battery without any other external circuit.
Until now I've found information for the nodemcu 1.0 and it supports up to 20V on the VIN port. Here's the article I read: http://henrysbench.capnfatz.com/henrys-bench/arduino-projects-tips-and-more/powering-the-esp-12e-nodemcu-development-board/
I'd like to use the two port: 5V and GND but I'm not sure, here there is no VIN port and I'd prefer to not burn my board. Are there any better way to power my project?