I have connected relay to GPIO 12 13 and 14 of the esp8266. as soon as connect power to esp8266, it energizes the relay! even before the boot up process or even before executing my codes and functions.
I pull the GPIOs to low when I initialize the GPIOs, so relays turn off as soon as boot process finishes and it execute the actual code. This is not good enough because the relays still turn on and off briefly.
Is there any way that stop exp8266 from pulling high the pins?