Home automation using nodemcu + relay

PeteKnight · August 20, 2018, 5:56pm

AbuJarrah:

  const int Relay_2 = 5;        //D1
  const int Relay_3 = 4;        //D2
  const int Relay_4 = 0;        //D3
  const int Relay_5 = 2;        //D4
  const int Relay_6 = 14;       //D5
  const int Relay_7 = 12;       //D6
  const int Relay_8 = 13;       //D7
  const int Relay_9 = 15;       //D8

It depends what you’re doing with your relays, and whether you mind some of them being activated momentarily on startup.

I’d certainly avoid using GPIOs 0, 1, 15 & 16

This excellent topic is well worth a read:

Pete.