The Turbo $1 Flashlight

Take a poor preforming flashlight and add great modifications to it in half an hour.

Oct 22, 2018

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Devices & Components

Arduino Uno Rev3

Pushbutton switch 12mm

General Purpose Transistor NPN

Breadboard (generic)

Jumper wires (generic)

Resistor 10k ohm

Software & Tools

Arduino IDE

Project description

Code

Flashlight Code

arduino

Enjoy!

1
2int buttonPin = 2;
3int lightPin = 3;
4static int value = 0;			//Create  a changing number
5void setup() {
6  pinMode(buttonPin,INPUT);
7  pinMode(lightPin,OUTPUT);		//Create  the pinModes
8}
9void full_light(){
10  digitalWrite(lightPin,HIGH); 
11  delay(50);
12}
13void  half_light(){
14  analogWrite(lightPin,127);		//Use PWM for brightness level
15  delay(50);
16}
17void fourth_light(){
18  analogWrite(lightPin,64);
19  delay(50);
20}
21void  strobe(){
22  digitalWrite(lightPin,HIGH);		//Change the delays if you want a  faster strobe
23  delay(100);
24  digitalWrite(lightPin,LOW);
25  delay(100);
26}
27void  loop() {
28int button_check = digitalRead(buttonPin);
29if (button_check == 1){			//Check  if the button was pressed
30  value = value + 1;
31  delay(220);
32  if (value  > 4){
33    value = 0;
34    delay(70);
35  }
36}
37else{					//Keep the  LEDs off if the button was not pressed
38  digitalWrite(lightPin,LOW);
39}
40if  (value == 1){			//Output the mode according to the button
41  full_light();
42}
43if  (value == 2){
44  half_light();
45}
46if (value == 3){
47  fourth_light();
48}
49if  (value == 4){
50  strobe();
51}
52}

int buttonPin = 2;
int lightPin = 3;
static int value = 0;			//Create  a changing number
void setup() {
  pinMode(buttonPin,INPUT);
  pinMode(lightPin,OUTPUT);		//Create  the pinModes
}
void full_light(){
  digitalWrite(lightPin,HIGH); 
  delay(50);
}
void  half_light(){
  analogWrite(lightPin,127);		//Use PWM for brightness level
  delay(50);
}
void fourth_light(){
  analogWrite(lightPin,64);
  delay(50);
}
void  strobe(){
  digitalWrite(lightPin,HIGH);		//Change the delays if you want a  faster strobe
  delay(100);
  digitalWrite(lightPin,LOW);
  delay(100);
}
void  loop() {
int button_check = digitalRead(buttonPin);
if (button_check == 1){			//Check  if the button was pressed
  value = value + 1;
  delay(220);
  if (value  > 4){
    value = 0;
    delay(70);
  }
}
else{					//Keep the  LEDs off if the button was not pressed
  digitalWrite(lightPin,LOW);
}
if  (value == 1){			//Output the mode according to the button
  full_light();
}
if  (value == 2){
  half_light();
}
if (value == 3){
  fourth_light();
}
if  (value == 4){
  strobe();
}
}

Flashlight Code

arduino

Enjoy!

1
2int buttonPin = 2;
3int lightPin = 3;
4static int value = 0;			//Create   a changing number
5void setup() {
6  pinMode(buttonPin,INPUT);
7  pinMode(lightPin,OUTPUT);		//Create   the pinModes
8}
9void full_light(){
10  digitalWrite(lightPin,HIGH); 
11  delay(50);
12}
13void   half_light(){
14  analogWrite(lightPin,127);		//Use PWM for brightness level
15   delay(50);
16}
17void fourth_light(){
18  analogWrite(lightPin,64);
19  delay(50);
20}
21void   strobe(){
22  digitalWrite(lightPin,HIGH);		//Change the delays if you want a   faster strobe
23  delay(100);
24  digitalWrite(lightPin,LOW);
25  delay(100);
26}
27void   loop() {
28int button_check = digitalRead(buttonPin);
29if (button_check == 1){			//Check   if the button was pressed
30  value = value + 1;
31  delay(220);
32  if (value   > 4){
33    value = 0;
34    delay(70);
35  }
36}
37else{					//Keep the   LEDs off if the button was not pressed
38  digitalWrite(lightPin,LOW);
39}
40if   (value == 1){			//Output the mode according to the button
41  full_light();
42}
43if   (value == 2){
44  half_light();
45}
46if (value == 3){
47  fourth_light();
48}
49if   (value == 4){
50  strobe();
51}
52}

int buttonPin = 2;
int lightPin = 3;
static int value = 0;			//Create   a changing number
void setup() {
  pinMode(buttonPin,INPUT);
  pinMode(lightPin,OUTPUT);		//Create   the pinModes
}
void full_light(){
  digitalWrite(lightPin,HIGH); 
  delay(50);
}
void   half_light(){
  analogWrite(lightPin,127);		//Use PWM for brightness level
   delay(50);
}
void fourth_light(){
  analogWrite(lightPin,64);
  delay(50);
}
void   strobe(){
  digitalWrite(lightPin,HIGH);		//Change the delays if you want a   faster strobe
  delay(100);
  digitalWrite(lightPin,LOW);
  delay(100);
}
void   loop() {
int button_check = digitalRead(buttonPin);
if (button_check == 1){			//Check   if the button was pressed
  value = value + 1;
  delay(220);
  if (value   > 4){
    value = 0;
    delay(70);
  }
}
else{					//Keep the   LEDs off if the button was not pressed
  digitalWrite(lightPin,LOW);
}
if   (value == 1){			//Output the mode according to the button
  full_light();
}
if   (value == 2){
  half_light();
}
if (value == 3){
  fourth_light();
}
if   (value == 4){
  strobe();
}
}

Downloadable files

The Circuit

The single LED represents the the LED head. It will blow if a 220 Ohm resistor is not placed between the LED and ground.

The Circuit

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