Week 6

Individual Assignment

• write a program for a microcontroller development board that you made,to interact (with localinput &/oroutput devices) and communicate (with remotewired or wireless devices)
• extra credit: use different languages &/or development environments
• extra credit: connect external components to the board

Programming

Firstly I thought of programming a circuit board, I designed as a practice board. But for this week's assignment I added a button to it.But I ended up programming the quentoores from Electronic Production week.

Then I added my initials using inkscape

Printing the board

Components

Soldering!

Change of plans

Sadly, while trying to program my board, after connecting the Arduino UNO to my board using AVR ISP, it got stuck and I used too much force and mistakenly took out the copper plate as well. And as there was not much time left I changed my plans and used the QuenTorres.

Programmer board : QuenTorres

Programming

http://drazzy.com/package_drazzy.com_index.json

This is the code I used

    
    /*
      Button
    
      Turns on and off a light emitting diode(LED) connected to digital pin 13,
      when pressing a pushbutton attached to pin 2.
    
      The circuit:
      - LED attached from pin 13 to ground through 220 ohm resistor
      - pushbutton attached to pin 2 from +5V
      - 10K resistor attached to pin 2 from ground
    
      - Note: on most Arduinos there is already an LED on the board
        attached to pin 13.
    
      created 2005
      by DojoDave http://www.0j0.org
      modified 30 Aug 2011
      by Tom Igoe
    
      This example code is in the public domain.
    
      https://www.arduino.cc/en/Tutorial/BuiltInExamples/Button
    */
    
    // constants won't change. They're used here to set pin numbers:
    const int buttonPin = 27;  // the number of the pushbutton pin
    const int ledPin = 1;    // the number of the LED pin
    
    // variables will change:
    int buttonState = 0;  // variable for reading the pushbutton status
    
    void setup() {
      // initialize the LED pin as an output:
      pinMode(ledPin, OUTPUT);
      // initialize the pushbutton pin as an input:
      pinMode(buttonPin, INPUT);
    }
    
    void loop() {
      // read the state of the pushbutton value:
      buttonState = digitalRead(buttonPin);
    
      // check if the pushbutton is pressed. If it is, the buttonState is HIGH:
      if (buttonState == HIGH) {
        // turn LED on:
        digitalWrite(ledPin, HIGH);
      } else {
        // turn LED off:
        digitalWrite(ledPin, LOW);
      }
    }
    
    

Serial Communication

I programmed my Quentorres board to provide real-time feedback by printing 'LED ON' and 'LED OFF' messages to the serial monitor when the LED blinks and remains off, respectively.

This is the code I wrote myself to fulfil the requirements

  
    const int ledPin = 1; 

void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  digitalWrite(ledPin, HIGH);  
  Serial.println("LED ON");   
  delay(1000);                
  digitalWrite(ledPin, LOW);  
  Serial.println("LED OFF");  
  delay(1000);                
}
  

Explanation of the code

const int ledPin = 1;

Defines a constant integer variable ledPin with a value of 1. This specifies that the LED is connected to GPIO pin 1 on the ESP32-C3.

void setup() {

Begins the setup() function, which runs once when the microcontroller starts or is reset.

pinMode(ledPin, OUTPUT);

Configures pin 1 (ledPin) as an output, allowing the microcontroller to control an external device like an LED.

Serial.begin(9600);

Initializes serial communication with the computer via the USB port at a baud rate of 9600 bits per second. This enables communication with the Serial Monitor for debugging and feedback.

void loop() {

Starts the loop() function, which runs repeatedly as long as the microcontroller is powered on.

digitalWrite(ledPin, HIGH);

Sets pin 1 (ledPin) voltage to HIGH, turning on the LED connected to it.

Serial.println("LED ON");

Prints "LED ON" to the Serial Monitor, indicating that the LED is turned on.

delay(1000);

Pauses the program for 1000 milliseconds (1 second), keeping the LED on for this duration.

digitalWrite(ledPin, LOW);

Sets pin 1 (ledPin) voltage to LOW, turning off the LED.

Serial.println("LED OFF");

Prints "LED OFF" to the Serial Monitor, indicating that the LED is turned off.

delay(1000);

Pauses the program for another 1000 milliseconds (1 second), keeping the LED off for this duration.

The loop() function then repeats from step 6, causing the LED to blink on and off continuously every second.