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/ProgLab/Zumo_2.0/Zumo_2.0.ino

@@ -0,0 +1,54 @@
+#include <PLab_ZumoMotors.h>
+#include <Pushbutton.h>
+#include <QTRSensors.h>
+#include <ZumoBuzzer.h>
+#include <ZumoMotors.h>
+#include <ZumoReflectanceSensorArray.h>
+
+#define maxSpeed     400
+#define reverseSpeed 400
+#define lightThreshold  1800
+
+ZumoMotors motors;
+Pushbutton button(ZUMO_BUTTON);
+unsigned int sensorValues[6];
+ZumoReflectanceSensorArray reflectaneceSensors;
+
+void setup()
+{
+   reflectaneceSensors.init();
+   motors.setSpeeds(0,0);
+   button.waitForButton();
+}
+
+void findLine()
+{
+   reflectaneceSensors.read(sensorValues);
+   if (sensorValues[0] > lightThreshold)
+   {
+      turnLeft(1000);
+   }
+   else if (sensorValues[5] > lightThreshold)
+   {
+      turnRight(1000);
+   }
+}
+
+void turnLeft(int delayTime)
+{
+   motors.setSpeeds(0, 200);
+   delay(delayTime);
+}
+void turnRight(int delayTime)
+{
+   motors.setSpeeds(200, 0);
+   delay(delayTime);
+}
+
+void loop()
+{
+   findLine();
+   motors.setSpeeds(200, 200);
+}
+
+