CPP: Servo sg90 - lvidarte/esp8266 GitHub Wiki

The sg90 servo has three wires: brown (gnd), red (vcc), and yellow (signal). The vcc is the power source for the servo, and it has to be connected to the vin pin of our board – this way it is connected directly to the USB port, and not powered through the board.

Checkout this PlatformIO project code here

#include <Arduino.h>
#include <Servo.h>

Servo servo;

void setup ()
{
  servo.attach(14);
}

void loop ()
{
  // To 0°
  servo.write(0);
  delay(1000);

  // To 90°
  servo.write(90);
  delay(1000);

  // To 180°
  servo.write(180);
  delay(1000);
}