How to make it?
To build this you'll need:
1. Arduino Uno
2. 4 Different color LEDs
3. 1k resistance
4. 10k resistance
5 LDR
6. Breadboard
7. PC with Arduino IDE
Steps to build:
- Connect LEDs with the Arduino Digital pins (3, 4, 5, 6) and 1k resistance with LEDs
- Connect the LDR with 10k Resistance to A0 pin as shown in the below Circuit diagram
- Now upload the below program and done, Now it will work same as shown in the above video.
Circuit diagram:
Program for the project:
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/* Copy the below program */
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/*
Date 17, April, 2020
Program by Prince Kumar member at innovationsfy.com
This program is free to use as an open-source community
Feel free to ask any query Send an email on [email protected]
*/
int led1 = 3; //output led
int led2 = 4; //output led
int led3 = 5; //output led
int led4 = 6; //output led
int sensor = A0; // input ldr sensor
int Value; // to store ldr analog valuew
void setup()
{
pinMode(led1,OUTPUT); // output defined
pinMode(led2,OUTPUT); // output defined
pinMode(led3,OUTPUT); // output defined
pinMode(led4,OUTPUT); // output defined
pinMode(sensor,INPUT); // intput defined
}
void loop()
{
Value = analogRead(sensor); // reading sensor value and storing in 'value'
if(Value<=255) //1st level of intenstiy
{
digitalWrite(led1,HIGH);
digitalWrite(led2,LOW);
digitalWrite(led3,LOW);
digitalWrite(led4,LOW);
}
if(Value>=255 && Value<=510) //2nd level of intenstiy
{
digitalWrite(led1,LOW);
digitalWrite(led2,HIGH);
digitalWrite(led3,LOW);
digitalWrite(led4,LOW);
}
if(Value>=510 && Value<=765) //3rd level of intenstiy
{
digitalWrite(led1,LOW);
digitalWrite(led2,LOW);
digitalWrite(led3,HIGH);
digitalWrite(led4,LOW);
}
if(Value>=765 && Value<=1023)//4th level of intenstiy
{
digitalWrite(led1,LOW);
digitalWrite(led2,LOW);
digitalWrite(led3,LOW);
digitalWrite(led4,HIGH);
}
}
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/*End of program*/
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