This week we were assigned to Communicate wirelessly with a Smart Circuit via a Graphical User Interface (GUI) on our phone or PC.

I thought about prototyping a kids toy which van change color and display the color name via serial monitor . it also has different animal sounds.

#define red 9

#define green 10

#define blue 11

#define buzzer 12

char incomingData = '0';

void setup() {

Serial.begin(9600);

pinMode(buzzer, OUTPUT);

pinMode(red, OUTPUT);

pinMode(green, OUTPUT);

pinMode(blue, OUTPUT);

}

void loop() {

// don't display data on serial monitor if there is no change.

if (Serial.available() > 0)

{

incomingData = Serial.read();

}

// change colors to red if received order 1

if (incomingData == '1') {

analogWrite(9, 255); //red color

analogWrite(10, 0);

analogWrite(11, 0);

delay(1000);

Serial.println (incomingData);

Serial.println ("Color RED");

}

// change colors to green if received order 2

else if (incomingData == '2') {

analogWrite(9, 0); //Green Color

analogWrite(10, 102);

analogWrite(11, 0);

delay(1000);

Serial.println (incomingData);

Serial.println ("Color Green");

}

// change colors to blueif received order 3

else if (incomingData == '3') {

analogWrite(9, 0); //blue color

analogWrite(10, 0);

analogWrite(11, 153);

delay(1000);

Serial.println (incomingData);

Serial.println ("Color BLUE");

}

// change colors to white if received order 4

else if (incomingData == '4') {

analogWrite(9, 255); //White color

analogWrite(10, 255);

analogWrite(11, 255);

delay(1000);

Serial.println (incomingData);

Serial.println ("Color White");

}

// play buzzer if received 5

else if (incomingData == '5') {

tone(buzzer, 20, 200); //Play tune 200HZ

delay(150);

noTone(buzzer);

delay(200);

Serial.println (incomingData);

Serial.println ("Cricket SOUND");

}

else if (incomingData == '6') {

noTone(buzzer);

delay(1000);

Serial.println (incomingData);

Serial.println ("Buzzer OFF");

}

}

An Important tip that was shared is that you need to detach the Bluetooth module read and write pins to be able to upload any code through the IDE, since the serial port are internally wired to those pins as well. it saved us some time scratching our heads on why we're not able to upload any code : )

whenever we got stuck, thee first option is always to search for an answer online. if you're lost ask your supervisors to direct you on where to search.

Getting through a project from scratch was interesting to do. surly will help with planing our final project.

It was interesting learning about how PCBs are made

It was Fun working on a robotic arm this week.