Arduino LED Project – Knight Rider:
Therefore, we will make a flashing LED game. You can find the code to make the Knight Rider on the Arduino page. Here we will try to show a simpler and shorter code. I will make a version of 10 LEDs.
Let’s start with what we will need for this project, if you purchased one of these Arduino starter kits, you should find each of these components in the box for Arduino based mini projects
This project used to help you learn how to use LEDs with Arduino and how to use for loops. First we have to do is connect everything together, the schematic given below is how to connect all the connections. Here I used 220Ω resistors in place of 200Ω resistors can work for this project as well.
Whenever you use LED’s for light, we have to use the resistor this resistor acting as the current limiting resistor some people will say you don’t need to use the resistor for LED’s which is not true for Arduino. We always LED connect with the resistor to Arduino otherwise LED and Arduino may damage.
Material Required for Arduino LED Project
Arduino Uno Board
10 x LEDs
10 x 200Ω resistors or 220Ω resistors
Breadboard
How to Connect Arduino LED Project for Beginners
Put the negative leg (shorter one) of the LED in the negative bar of the breadboard and the positive leg in the breadboard row. then connect the resistor to the LED and the resistor with the Arduino using a male-male jumper wire. Do the same for all 10 LEDs. Don’t forget about Connecting the negative bar to GND of the Arduino.
Arduino LED Project Working
Now you can upload a program by disconnect jumper wires from pins 0 and 1, Just keep in mind that when you want to upload the program because they are shared with the UART communication pins RX and TX. It is impossible to upload a program on the board when LEDs are plugged into these pins.
Arduino programming for Knight Rider Arduino Projects for Beginners
//here you can change speed of the effect, it can be faster or slower, as you wish
int time_between_blinks = 50;
void setup() {
//here we are setting up all pins as an outputs for LEDs
pinMode(0, OUTPUT);
pinMode(1, OUTPUT);
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
}
void loop() {
//that’s the for loop, the first parameter is a value that is equal to 0, the loop
//will work as long as the value of a will be higher or equal to 10 (second parameter)
//and at the end we are incrementing a by 1
int volume = analogRead(A0);
volume = map(volume, 0, 1023, 0, 10);
for(int a = 0; a <10; a++){ if(volume >= a){
digitalWrite(a, HIGH);
}else{
digitalWrite(a, LOW);
}
}
}
