Arduino street lights Pt2 Tutorial

ARDUINO STREET LIGHTS PT2 TUTORIAL

INTRODUCTION

Arduino is a microcontroller which can be programmed to do certain operations like lighting led, controlling servo, etc. This is a DIY Arduino project intended to simulate street lights using 20 LED’s and transistors for amplification. Currently due to advancements in technology, LED’s are replacing incandescent, fluorescent and halogen lamps. LED’s are inexpensive, robust and most importantly efficient. LED’s are already powering many parks, streets in cities and villages. They themselves are recharged by solar power thus they represent a completely green source of energy.

COMPONENTS REQUIRED

1. Breadboard

2. Arduino MEGA and USB cable

3. 5mm White LED’s (20 nos.)

4. 20 Ohm resistors (20 nos.)

5. 10 Ohm resistors (20 nos.)

6. NPN Transistor (20 nos.)

7. Jumpers

8. A 5V DC Power supply

CIRCUIT SCHEMATICS

Fig.1 Arduino street light pt2 schematic

Make the appropriate connections as shown in the schematic above

CODE

This is the code for simulating Arduino Street lights version 2. Note that this code is valid only for the particular schematic represented in figure1. The values and choice of ports can always be changed. The schematic only displays for 5 LED’s due to lack of space. Mimic the same setup for other LED’s as well. The given code is for 20 LED’s. Copy and paste the code in Arduino IDE sketch area.

void setup() {

  // put your setup code here, to run once:

pinMode(2, OUTPUT);

pinMode(3, OUTPUT);

pinMode(4, OUTPUT);

pinMode(5, OUTPUT);

pinMode(6, OUTPUT);

pinMode(7, OUTPUT);

pinMode(8, OUTPUT);

pinMode(9, OUTPUT);

pinMode(10, OUTPUT);

pinMode(11, OUTPUT);

pinMode(12, OUTPUT);

pinMode(13, OUTPUT);

pinMode(14, OUTPUT);

pinMode(15, OUTPUT);

pinMode(16, OUTPUT);

pinMode(17, OUTPUT);

pinMode(18, OUTPUT);

pinMode(19, OUTPUT);

pinMode(20, OUTPUT);

pinMode(21, OUTPUT);

}

void loop() {

  // put your main code here, to run repeatedly:

digitalWrite (2, HIGH);

digitalWrite (3, HIGH);

digitalWrite (4, HIGH);

digitalWrite (5, HIGH);

digitalWrite (6, HIGH);

digitalWrite (7, HIGH);

digitalWrite (8, HIGH);

digitalWrite (9, HIGH);

digitalWrite (10, HIGH);

digitalWrite (11, HIGH);

digitalWrite (12, HIGH);

digitalWrite (13, HIGH);

digitalWrite (14, HIGH);

digitalWrite (15, HIGH);

digitalWrite (16, HIGH);

digitalWrite (17, HIGH);

digitalWrite (18, HIGH);

digitalWrite (19, HIGH);

digitalWrite (20, HIGH);

digitalWrite (21, HIGH);

}