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arduino-cli/libraries/Stepper2/examples/Stepper2_oneTurn/stepper_oneRevolution/stepper_oneRevolution.ino

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+
+/*
+ Stepper Motor Control - one turn
+ */
+
+ #include <Stepper2.h>
+
+ const int rpm = 15; // max rpm on 28BYJ-48 is ~15
+ int pinOut[4] = { D1, D2, D5, D6 };
+
+ Stepper2 myStepper(pinOut);
+
+ void setup() {
+   Serial.begin(115200);
+   myStepper.setSpeed(rpm);
+ }
+
+ void loop() {
+   Serial.println("start");
+   myStepper.setDirection(0); // clock-wise
+   myStepper.turn();          // one full turn
+   myStepper.stop();
+   myStepper.setDirection(1); // counter-clock-wise
+   myStepper.turn(3);         // three full turns
+   myStepper.stop();
+   delay(15 * 1000);
+ }