Published May 6, 2021 © GPL3+

eye protector

It is a project made to reduce the brightness of the computer screen based on the distance of us from the screen

BeginnerFull instructions provided364

Things used in this project

Hardware components

Arduino UNO

Ultrasonic Sensor - HC-SR04 (Generic)

Jumper wires (generic)

Software apps and online services

Arduino IDE

Story

Being a teenager who has regular online classes I feel a constant strain in my eyes and that is due to harmful rays coming from the laptops screen and its not just the classes after that when we play on pc or do homework our eyes are still getting weak so to solve this I made this project. It works based on ultrasonic sensor which calculates the distance, this projects uses python to reduce the brightness so without further delay lets proceed

so the first thing required is the pyserial library for python and obviously python 3.9

so to download pyserial either use command prompt (for windows) or you can directly download it using this link https://pypi.org/project/pyserial/ (i prefer using command prompt)

so for command prompt copy this command

pip install pyserial

and open command prompt

as I have already downloaded it, this is the screen I get but for You the download process shall start

the second thing required is the screen brightness control library for python the link is https://pypi.org/project/screen-brightness-control/

and obviously the command to download using command prompt is pip install screen-brightness-control

You can use either

now for the connections they are very simple

the 5v goes to 5v of sensor

gnd to gnd

trigger pin to pin 9

echo pin to pin 8

so this was all thanks for reading and giving me your precious time

Code

 int trigPin = 9; //Trigger pin of 1st Sesnor
 int echoPin = 8; //Echo pin of 1st Sesnor

 
float duration_us, distance_cm;// variable for the distance_cm measurement

void setup() {
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an OUTPUT
  pinMode(echoPin, INPUT); // Sets the echoPin as an INPUT
  Serial.begin(9600); // // Serial Communication is starting with 9600 of baudrate speed
  Serial.println("Ultrasonic Sensor HC-SR04 Test"); // print some text in Serial Monitor
  Serial.println("with Arduino UNO R3");
}
void loop() {
 digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  // measure duration of pulse from ECHO pin
  duration_us = pulseIn(echoPin, HIGH);

  // calculate the distance_cm
  distance_cm= 0.017 * duration_us;

  // print the value to Serial Monitor


  delay(500);
 if ((distance_cm=60)&&(distance_cm<50))
 {
  Serial.println("Increase Brightness alittle");
 }
else if(distance_cm>=100){
  Serial.print("Maximum Brightness Object too far");
 }
else if(distance_cm<=30){
  Serial.println("Decrease Brightness");
 }
else if(distance_cm<=20){
  Serial.println("Decrease even more");
 }
 else if(distance_cm<=10){
  Serial.println("Zero brightness");
 }
 else {
  Serial.println("No INPUT");
 }
}

import serial #Serial imported for Serial communication
import time #Required to use delay functions
import screen_brightness_control as sbc
ArduinoSerial = serial.Serial('com4',9600) #Create Serial port object called arduinoSerialData
time.sleep(2) #wait for 2 seconds for the communication to get established
print("working")
current_brightness = sbc.get_brightness()
print(current_brightness)
while 1:
    incoming = str (ArduinoSerial.readline()) #read the serial data and print it as line
    print (incoming)
    
    if 'Increase Brightness alittle' in incoming:
         sbc.set_brightness(60)

    if 'Maximum Brightness' in incoming:
        sbc.set_brightness(100)

    if 'Maximum Brightness Object too far' in incoming:
         sbc.set_brightness(100)

    if 'Decrease Brightness' in incoming:
        sbc.set_brightness(40)
        

    if 'Decrease even more' in incoming:
        sbc.set_brightness(30)

        
    if 'Zero brightness' in incoming:
        sbc.set_brightness(0)

    incoming = "";

eye protector

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

The connections

Code

The code

Python code

Credits

harshitmehra2007

Comments

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eye protector

eye protector

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

The connections

Code

The code

Python code

Credits

harshitmehra2007

Comments

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