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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Components and supplies

Pushbutton switch 12mm

General Purpose Transistor NPN

Arduino UNO

Breadboard (generic)

Jumper wires (generic)

Resistor 10k ohm

Apps and platforms

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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