We wont be responsible for your actions as this is only for educational purposes
Made with nodemcu v0.1
1) Go to https://github.com/nodemcu/nodemcu-flasher and downoald the nodemcu flasher
2) Go to https://github.com/spacehuhn/esp8266_deauther/releases and downoald .bin file v1.1-v1.6 if you have nodemcu v.0.1 but if you have the v1.0 you can try all
3) Open the flasher select the bin file connect the nodemcu thru usb, select the port (it shouldnt be COM1) then flash it.
4) you should fiind a new wifi in your neighborhood witch password is “deauther”
5)Once you have connected you should visit these ip 192.168.4.1:80 then you have acces to all settings