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+//www.elegoo.com
+//2016.09.12
+
+#include <IRremote.h>
+int receiverpin = 12;
+int in1=9;
+int in2=8;
+int in3=7;
+int in4=6;
+int ENA=10;
+int ENB=5;
+int ABS=130;
+unsigned long RED;
+#define A 16736925
+
+#define B 16754775
+
+#define X 16712445
+
+#define C 16720605
+
+#define D 16761405
+
+
+IRrecv irrecv(receiverpin);
+decode_results results;
+
+void _mForward()
+{
+ digitalWrite(ENA,HIGH);
+ digitalWrite(ENB,HIGH);
+ digitalWrite(in1,LOW);
+ digitalWrite(in2,HIGH);
+ digitalWrite(in3,LOW);
+ digitalWrite(in4,HIGH);
+ Serial.println("go forward!");
+}
+void _mBack()
+{
+ digitalWrite(ENA,HIGH);
+ digitalWrite(ENB,HIGH);
+ digitalWrite(in1,HIGH);
+ digitalWrite(in2,LOW);
+ digitalWrite(in3,HIGH);
+ digitalWrite(in4,LOW);
+ Serial.println("go back!");
+}
+void _mleft()
+{
+ analogWrite(ENA,ABS);
+ analogWrite(ENB,ABS);
+ digitalWrite(in1,LOW);
+ digitalWrite(in2,HIGH);
+ digitalWrite(in3,HIGH);
+ digitalWrite(in4,LOW);
+ Serial.println("go left!");
+}
+void _mright()
+{
+ analogWrite(ENA,ABS);
+ analogWrite(ENB,ABS);
+ digitalWrite(in1,HIGH);
+ digitalWrite(in2,LOW);
+ digitalWrite(in3,LOW);
+ digitalWrite(in4,HIGH);
+ Serial.println("go right!");
+}
+void _mStop()
+{
+ digitalWrite(ENA,LOW);
+ digitalWrite(ENB,LOW);
+ Serial.println("STOP!");
+}
+void setup() {
+ // put your setup code here, to run once:
+ pinMode(in1,OUTPUT);
+ pinMode(in2,OUTPUT);
+ pinMode(in3,OUTPUT);
+ pinMode(in4,OUTPUT);
+ pinMode(ENA,OUTPUT);
+ pinMode(ENB,OUTPUT);
+ pinMode(receiverpin,INPUT);
+ Serial.begin(9600);
+ _mStop();
+ irrecv.enableIRIn();
+}
+
+void loop() {
+ if (irrecv.decode(&results))
+ {
+
+ RED=results.value;
+ Serial.println(RED);
+ irrecv.resume();
+ delay(150);
+ if(RED==A)
+ {
+ _mForward();
+ }
+
+ else if(RED==B)
+ {
+ _mBack();
+ }
+
+ else if(RED==C)
+ {
+ _mleft();
+ }
+
+ else if(RED==D)
+ {
+ _mright();
+ }
+
+
+ else if(RED==X)
+ {
+ _mStop();
+ }
+
+}
+}
+