Week 6 - Journal

Electronics Tools

coding  

i wrote the code to make the room lightinning when a strange body enter 

// C++ code

//

long readUltrasonicDistance(int triggerPin, int echoPin)

{

  pinMode(triggerPin, OUTPUT);  // Clear the trigger

  digitalWrite(triggerPin, LOW);

  delayMicroseconds(2);

  // Sets the trigger pin to HIGH state for 10 microseconds

  digitalWrite(triggerPin, HIGH);

  delayMicroseconds(10);

  digitalWrite(triggerPin, LOW);

  pinMode(echoPin, INPUT);

  // Reads the echo pin, and returns the sound wave travel time in microseconds

  return pulseIn(echoPin, HIGH);

}

void setup()

{

  pinMode(8, OUTPUT);

}

void loop()

{

  if (0.01723 * readUltrasonicDistance(3, 2) < 9) {

    digitalWrite(8, HIGH);

  }

  if (0.01723 * readUltrasonicDistance(3, 2) > 9) {

    digitalWrite(8, LOW);

  }

  delay(10); // Delay a little bit to improve simulation performance

}

Build Circuit on Breadbord

I connected the motor to the switch, then completed the rest of the wiring as shown in Tinkercad. Finally, I verified that the circuit works properly. 

I made the connection after ensuring that the wiring was correct on Tinkercad. I uploaded the code as text to the Arduino software and ran the circuit.  

Making robot

I used a FAN  AND make a cardboard for the body, and used tape 

With the rush to get things done quickly, we sometimes forget simple things that affect the whole work. While working on a CAD design, I forgot to change the resistor's ohm value, and after I built the circuit and the lights lit up, I went back to check and found the problem was that I hadn't changed the 220-ohm resistor. Once I changed it, I figured out what the issue was.