Init commit with many years of arduino sketches and projects. I dont know if the esp8266 includes much, but there are also libraries. I hope they dont have crazy automatic versioning through the Arduino IDE.

Projects/28BYJ Stepper/Third_WithButtons/Third_WithButtons.ino

@@ -0,0 +1,86 @@
+
+int leftCCW[] = {8, 9, 10, 11};
+int leftCW[] = {11, 10, 9, 8};
+int leftButtons[] = {2, 3};
+
+int rightCCW[] = {4, 5, 6, 7};
+int rightCW[] = {7, 6, 5, 4};
+int rightButtons[] = {0, 1};
+
+const int motorSteps[8][4] = {
+{1, 0, 0, 0},
+{1, 1, 0, 0},
+{0, 1, 0, 0},
+{0, 1, 1, 0},
+{0, 0, 0, 1},
+{0, 0, 1, 1},
+{0, 0, 0, 1},
+{1, 0, 0, 1}
+};
+
+int motorSpeed = 0;
+
+void setup() {
+  for (int i=0; i < 4; i++) {
+    pinMode(leftCW[i], OUTPUT);
+    pinMode(rightCW[i], OUTPUT);
+  }
+  for (int i = 0; i < 2; i++) {
+    pinMode(leftButtons[i], INPUT);
+    pinMode(rightButtons[i], INPUT);
+  }
+}
+
+void loop() {
+  if (analogRead(leftButtons[0]) == 0) {
+    leftUp();
+  } else if(analogRead(leftButtons[1]) == 1){
+    leftDown();
+  }
+
+  if (analogRead(leftButtons[0]) == 0) {
+    rightUp();
+  } else if(analogRead(leftButtons[1]) == 1){
+    rightDown();
+  }
+}
+
+void leftUp() {
+  for(int i=0; i < 8; i++){
+    for(int j=0; j < 4; j++){
+      // Left motor
+      digitalWrite(leftCW[j], motorSteps[j][i]);
+      delay(1);
+    }
+  }
+}
+
+void leftDown() {
+  for(int i=0; i < 8; i++){
+    for(int j=0; j < 4; j++){
+      // Left motor
+      digitalWrite(leftCCW[j], motorSteps[j][i]);
+      delay(1);
+    }
+  }
+}
+
+void rightUp() {
+  for(int i=0; i < 8; i++){
+    for(int j=0; j < 4; j++){
+      // Right motor
+      digitalWrite(rightCCW[j], motorSteps[j][i]);
+      delay(1);
+    }
+  } 
+}
+
+void rightDown() {
+  for(int i=0; i < 8; i++){
+    for(int j=0; j < 4; j++){
+      // Right motor
+      digitalWrite(rightCW[j], motorSteps[j][i]);
+      delay(1);
+    }
+  }
+}