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Learning Board (embedded Controller)

Photo of arunkumar-v

Made by arunkumar-v / Communication / Home Automation / Sensors / Sustainability / IoT

About the project

It is a general purpose LEARNING BOARD similar to arduino microcontroller, but more features than Arduino microcontroller. I have designed it using ATMEGA328P IC.Moreover, in addition with functions of arduino microcontroller Motor driver, Bluetooth, relay ports are separately given in the board.

Project info

Difficulty: Difficult

Platforms: Arduino, ControlEverything.com, Home Assistant, Eclipse IoT, KiCad

Estimated time: 3 months

License: GNU General Public License, version 3 or later (GPL3+)

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Items used in this project

Hardware components

	ATMEGA 328P IC	x 1
	RELAY 5V	x 1
	SMD RESISTOR	x 7
	SMD CAPACITOR	x 9
	ULTRASONIC SENSOR	x 1
	IR SENSOR	x 1
	TEMPERATURE SENSOR	x 1
	DC FAN 5V	x 1
	LED	x 8
	CRYSTAL OSCILLATOR	x 1
	PUSH BUTTON	x 1
	BUZZER	x 2
	VOLTAGE REGULATOR	x 1
	DIODE	x 1

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Software apps and online services

ARDUINO IDE

Hand tools and fabrication machines

	SOLDERING STATION	x 1
	CUTTER	x 1
	SCREW DRIVER	x 1
	MULTIMETER	x 1

Story

LEARNING BOARD (EMBEDDED CONTROLLER):

It is a general purpose LEARNING BOARD similar to arduino microcontroller. I have designed it using ATMEGA328P IC. Using this board we can interface analog and digital sensors and used for multiple applications. Moreover, in addition with functions of arduino microcontroller Motor driver, Bluetooth ports are specifically fixed in board which is very helpful for the user.Relay and 5V DC fan are inbuilt in the board to check the outputs with in the board .By using the separate ports user can perform tasks very easy with time efficient way. In the working module I have used four sensors namely ultrasonic ,IR,Temperature and Soil moisture sensor and the outputs are verified externally by different LED's.

I have used FTDI USB driver to dump the code .Buzzer and Relay provisions are given in the board for the user convinience.Indicators are given to both analog and digital ports for output verifications. It is more efficient and low cost than arduino microcontroller.Thus I conclude that it is the perfect replacement of Arduino microcontroller.

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PCB VIEW:

SOLDERING:

FINAL OUTCOME:

Schematics, diagrams and documents

LEARNING BOARD (EMBEDDED CONTROLLER)

Schematic representation of LEARNING BOARD

CAD, enclosures and custom parts

LEARNING BOARD ( EMBEDDED CONTROLLER)

Layout of LEARNING BOARD ( EMBEDDED CONTROLLER)

Code

LEARNING BOARD (EMBEDDED CONTROLLER)

This code consists of working of four sensors namely ▶Ultrasonic sensor ▶IR Sensor ▶Temperature sensor ▶Soil moisture sensor


// defines pins numbers
const int trigPin = 9;
const int echoPin = 8;
const int led =2;
// defines variables
long duration;
int distance;

int IRSensor = A1
; // connect ir sensor to arduino pin 2
int LED = A5;
// conect Led to arduino pin


int val;
int tempPin =A2;
int LED1=5;


int sensorPin = A0; 
int sensorValue;  
int limit = 100; 

void setup()
{
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the ec
  
 // echoPin as an Input
  pinMode(led,OUTPUT);
  Serial.begin(9600); // Starts the serial communication

  
  
  pinMode (IRSensor, INPUT); // sensor pin INPUT
  pinMode (LED, OUTPUT); 
 
  Serial.begin(9600);

  Serial.begin(9600);
 pinMode(4, OUTPUT);

}
void loop()
{
  // Clears the trigPin
  digitalWrite(trigPin, LOW);
  
  delayMicroseconds(2);
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  // Calculating the distance
  distance = duration * 0.034 / 2;
  // Prints the distance on the Serial Monitor
  Serial.print("Distance: ");
  Serial.println(distance);
  if(distance>50)
  {
    digitalWrite(2,LOW);
  }
  else
  {
     digitalWrite(2,HIGH);
  }
int statusSensor = digitalRead (IRSensor);
  
  if (statusSensor == 1)
  {
  
    digitalWrite(LED, LOW);
    
    // LED LOW
  }
  
  else
  {
    digitalWrite(LED, HIGH); 
    
  }
   val = analogRead(tempPin);
  float mv = ( val/1024.0)*5000;
  float cel = mv/10;
  float farh = (cel*9)/5 + 32;
  Serial.print("TEMPRATURE = ");
  Serial.print(cel);
  Serial.print("*C");
  Serial.println();
  delay(1000);
  if(cel>10)
  {
    digitalWrite(5,HIGH); 
  }
  else
  {
     digitalWrite(5,LOW);
  }
   sensorValue = analogRead(sensorPin); 
 Serial.println("Analog Value : ");
 Serial.println(sensorValue);
 
 if (sensorValue>limit) {
 digitalWrite(4, HIGH); 
 }
 else {
 digitalWrite(4, LOW); 
 }
 
 delay(1000); 
}

Credits

Photo of arunkumar-v

arunkumar-v

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