power for ESP8266 12E
Posted: Fri Jun 08, 2018 11:06 amhi everyone i have build my first projet using ESP8266 nodemcu and OLED, Tinygps, it work correctly when i use the power of pc, but if i use the external power like a battery off 9v it power on and it doesnt delivred 3.3 in pin out what's the problems? and how can i solve it