LEDs Circuit for Robot Eyes

This Repository will explain my 4th task in Electronics and Electrical Power department at SMART METHODS summer training.

Task Requirements:

• Design a circuit for robot eyes using 2 LEDs and transistor.

Detailed Steps:

1. Using 2n2222 transister (NPN) as a switch for the LEDs whcih will help to provide the required power for them.

   • 2n2222 Transistor Datasheet.
   • Design steps:

   

   • Circuit daigram:

   

   • Code using PWM:

// C++ code
//
int eysLED=3; // define led pin
void setup()
{
  pinMode(eysLED, OUTPUT); // set as output
}

void loop()
{
  analogWrite(eysLED, 255); //use PWM 
  delay(60); //delay in microsecond
}

2. Task is Done 😍