Question

Write an arduino code to program a robot to move forward and check if there is an obstacle it will move backward to avoid it and then turn right or left then continue moving forward. (The sensor used is ultrasonic sensors)

Answer 1

Arduino code to program a robot to move forward and check if there is obstacle it move backward and turn left (or) right then continue moving # include < Arduino Rbot.h > // import the robot library /* Global variable declaration */ const int trigpin = 11: const int echo sin = 10: const int in1 = 9: const int in2 = 8: const int in3 = 4: const int in4 = 3: void setup () { pin mode (trigpin, OUTPUT): pin mode (echopin, INPUT): pinmode (in1, OUTPUT) pinmode (in2, OUTPUT): \r\n pinmode (in3, OUTPUT): pinmode (in4, OUTPUT): } long distance, duration: /* declaration of values & long data type */ void loop () { digital write (trigpin, low): delay microseconds (1): digital write (tripin, HIGH): delay micro seconds (10): digital write (trigpin, low): duration = PULSEIN (echopin, HIGH) distance = duration/58.2: if (distance < 15) { \r\n digital write (in1, Low): digital write (in2, HIGH): digital write (in3, HIGH): digital write (in4, Low): } else { digital write (in1, HIGH): digital write (in2, Low): digital write (in3, HIGH): digital write (in4, Low): } delay (50): }