Report of Ultrasonic Distance Measurement Project

Week 1 & 2 reports

Week 1

• I was able to successfully installed the Arduino application and I also started practicing "c" since we would be using it.
• Also we met to do some training on Ubuntu since it's been a while some of us used it.
• I also read about the ultrasonic distance measurement.
• The ultrasonic sensor normally measure distance based on echo.
• It does calculation based on the traveling time and the returning time.

Week 2

• I was able to test my blinking light which worked perfectly
• Answered Uli's questions
• code for the blinking LED

// the setup function runs once when you press reset or power the board
int pin=13;

void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(pin, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
digitalWrite(pin, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(pin, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}

Week 3

• Sound waves are oscillations with a frequency of some Hz up to ~ 20 KHz They are transmitted through the oscillation of the atoms or molecules of the medium (for us mostly air).
• Concerning the vacuum, since there are no atoms/molecules in vacuum, there is total silence
• humans can only hear frequencies up to 20kHz
• the SOS is a distress signal with the 'S' being the three dits and the 'U' being the three dals.
• I wrote a code in the simulator the url : https://circuits.io/circuits/4515295-the-unnamed-circuit/edit
• code for the sos blinking LED

// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 13;
int s = 200;
int o = 650;
//innitializing the s and o

// the setup routine runs once when you press reset:
void setup() {
// initialize the digital pin as an output.
pinMode(led, OUTPUT);
}

// the loop routine runs over and over again forever:
void character(int speed) {
digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)
delay(speed); // wait for a second
digitalWrite(led, LOW); // turn the LED off by making the voltage LOW
delay(200); // wait for a second
}
void loop(){
for(int x=1; x<=3; x++){
character(s);
}
delay(700);

for (int x=1; x<=3; x++){
character(o);
}
delay(700);

for (int x=1; x<=3; x++){
character(s);
}
delay(2000);
}

Week 4 & 5

• I downloaded the newping library.
• I moved it to the libraries in the arduino folder
• In the arduino IDE i imported the newping library by going to "Sketch - include library - Newping".

Enoch Sowah - 2017-03-27

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