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/Lyskryss/Lyskryss.ino

@@ -0,0 +1,57 @@
+#include <Servo.h>
+#include <NewPing.h>
+
+#define Trigger_Pin 12
+#define Echo_Pin 11
+#define Max_Distance 200
+
+// Green car - 10
+// Yellow car - 9
+// Red car - 8
+// Green person - 7
+// Red person - 6
+// ECHO 11 & 12
+
+
+NewPing sonar(Trigger_Pin, Echo_Pin, Max_Distance);
+
+Servo gateServo;
+int servoPos = 0;
+
+int lightPinArray[] = {
+  10, 9, 9, 8, 7, 6, 6, 7, 9, 8, 9};
+boolean lightStateArray[] = {
+  LOW, HIGH, LOW, HIGH, LOW, HIGH, LOW, HIGH, HIGH, LOW, LOW};
+int lightDelayArray[] = {
+  1000, 0, 500, 0, 500, 0, 2000, 0, 500, 500, 0};
+
+void setup() 
+{
+  for (int i = 0; i < 5; i++)
+  {
+    pinMode(i + 6, OUTPUT);
+  }
+  gateServo.attach(4);
+}
+
+void personDetected()
+{
+  for(int i = 0; i < 12; i++)
+  {
+    delay(lightDelayArray[i]);
+    digitalWrite(lightPinArray[i], lightStateArray[i]);
+  }
+
+void loop()
+{
+  unsigned int uS = sonar.ping();
+  if ((uS /US_ROUNDTRIP_CM) < 5 && uS /US_ROUNDTRIP_CM > 1)
+  {
+    personDetected();
+  }
+  else
+  {
+    digitalWrite(7, HIGH);
+    digitalWrite(10, HIGH);
+  }
+}