Introduction: Tinker CAD Obstacle Avoiding Robot
Hi guys!! Check out this obstacle avoiding robot. It is very simple to do this, just collect all the components and start working on it. This was made with Tinker CAD circuits.
Supplies
Materials needed:
*Arduino UNO or Nano
*Ultrasonic Sensor
*Motor driver
*Two BO motors, with wheels
*Battery
*Breadboard
Step 1: Connections
Start connecting the materials as shown in the circuit diagram. Connect them with jumper cables or solder them. Use a 9-volt battery to run the project, you can either connect the battery with the dc jack in Arduino or connect to 5v and GND pins.
Step 2: Coding
Its easier to code, just download the Arduino IDE software in your pc or laptop and connect the A to B coding Cable and start coding.
Code:
int trigPin = 9; // trig pin of HC-SR04int
echoPin = 10; // Echo pin of HC-SR04
int revleft4 = 4; //REVerse motion of Left motorint
fwdleft5 = 5; //ForWarD motion of Left
motorint revright6 = 6; //REVerse motion of Right motorint
fwdright7 = 7; //ForWarD motion of Right motor long duration, distance;
void setup()
{ delay(random(500,2000)); // delay for random time
Serial.begin(9600);
pinMode(revleft4, OUTPUT); // set Motor pins as output
pinMode(fwdleft5, OUTPUT);
pinMode(revright6, OUTPUT);
pinMode(fwdright7, OUTPUT);
pinMode(trigPin, OUTPUT); // set trig pin as output
pinMode(echoPin, INPUT); //set echo pin as input to capture reflected waves}
void loop()
{ digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH); // send waves for 10 us
delayMicroseconds(10);
duration = pulseIn(echoPin, HIGH); // receive reflected waves
distance = duration / 58.2; // convert to distance delay(10); // If you dont get proper movements of your robot then alter the pin numbers
if (distance > 19)
{ digitalWrite(fwdright7, HIGH); // move forward
digitalWrite(revright6, LOW);
digitalWrite(fwdleft5, HIGH);
digitalWrite(revleft4, LOW);
}
if (distance < 18)
{ digitalWrite(fwdright7, LOW); //Stop
digitalWrite(revright6, LOW);
digitalWrite(fwdleft5, LOW);
digitalWrite(revleft4, LOW);
delay(500);
digitalWrite(fwdright7, LOW); //movebackword
digitalWrite(revright6, HIGH);
digitalWrite(fwdleft5, LOW);
digitalWrite(revleft4, HIGH);
delay(500);
digitalWrite(fwdright7, LOW); //Stop
digitalWrite(revright6, LOW);
digitalWrite(fwdleft5, LOW);
digitalWrite(revleft4, LOW);
delay(100);
digitalWrite(fwdright7, HIGH);
digitalWrite(revright6, LOW);
digitalWrite(revleft4, LOW);
digitalWrite(fwdleft5, LOW);
delay(500);
}
}