Ardunio Night Light

I changed nickchuang29's https://www.instructables.com/Arduino-Light/#discuss Arduino light into Arduino night light, I changed the light into 3 same colors because yellow light is better for sleeping rather than red, green, and yellow, and I also add a button to open and close the light. And at first, it is 3 lights and after a while, when your eyes adapt to the dark, it would change to 1 light.

Arduino Leonardo

breadboard

3 yellow LED lights

13 wires

1 button

3 220 ohm resistors

1 Ohm 1/4W Precision Resistor

Connect the components exactly from the picture.

void setup() {

pinMode(13, OUTPUT);

pinMode(12, OUTPUT);

pinMode(11, OUTPUT);

pinMode(10, INPUT);

}

void loop() { if(digitalRead(10)){

digitalWrite(9, HIGH);

delay(1200); //origial is 1500

digitalWrite(9, LOW);

digitalWrite(12, HIGH);

delay(1200); //origial is 1500

digitalWrite(12, LOW);

digitalWrite(11, HIGH);

delay(1200); //origial is 1500

digitalWrite(11, LOW); }else { digitalWrite(11, LOW); digitalWrite(12, LOW); digitalWrite(19, LOW); }

} //button

Find or make a box to hold your arduino, you can make some holes that can open and close so if it is too bright, you can close 1 hole.

https://youtu.be/-INT-D4RlcM