Arduino Workshop - Chapter One - Hello World Example

In the final section of this chapter, we'll talk through using the Arduino IDE to upload your first program to your Arduino.

[grahamevans]

Chapter one, wonderful I’m so indebted to guys like yourself who help the newbies and not so newbies, and in advance I’ll thank you.
Unfortunately reading through some unhelpful comments here would discourage me from ever posting a help request.

[zok_]

That „when it’s hoigh“ is one of the most British things I’ve ever heard

[alvinraines]

I do not see arduino/gemuino uno as an option, therefore I cannot choose the port I am using. What am I doing wrong?

[Theredandbluegamer]

Hello, I would like to know why almost everything has the word “void”

[apiyopao]

Thankyou so so much 🤗🤗
This workshop videos are going to be very useful👌👍
just tried doing this hello world experiment today but am a bit confused cos this happened
1stly when selecting the port 3 options popped up which were COM3, COM4 and COM 5 arduino
I selected the last option i.e.,
COM5 Arduino
However, when to use the other two ports then and also after uploading my program I didn't see white light glow as a success message and (actually I couldn't clearly see the white light glow in your video too) in fact I saw orange light glow with mine so thought may be an error occured but no error message popped up on the display and the led blinked as expected maintaining a delay of half a second.
Then I changed the delay time to 1sec, 2 sec, 5 sec and the led blinked as expected, perfectly.
Also my Arduino has funduino uno written on it instead of Arduino uno is it any different from Arduino uno
So summing up my case did I do it right and was my experiment successful??

[Samueledits]

it wont say hello world it is a saying of an electronic

[Hello_there_obi]

I thought the hello world tutorial was to get the words "hello world" to print on your serial monitor. Then you can do it with a loop and the with a delay in the loop.

Am I missing something here?

[adamaneomar]

hello sir, why you choose pin 13 and no another

[kasiditruangrit]

#include <LiquidCrystal_I2C.h>;
LiquidCrystal_I2C lcd(0x27, 16, 2);
int analogX;
#include <Servo.h> // add servo library

Servo myservo; // create servo object to control a servo

int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin


void setup(){
lcd.init();
pinMode(A0, INPUT);
pinMode(3, OUTPUT);
lcd.backlight();
myservo.attach(2); // attaches the servo on pin 9 to the servo object
}

void loop(){

lcd.setCursor(1, 0);
lcd.print("Hello, world");

lcd.setCursor(1, 1);

analogX = analogRead(A0);

lcd.print(analogX);
lcd.print(" ");
analogWrite(3, analogX);
val = analogRead(potpin); // reads the value of the potentiometer (value between 0 and 1023)
val = map(val, 0, 1023, 0, 90); // scale it to use it with the servo (value between 0 and 180)
myservo.write(val); // sets the servo position according to the scaled value
delay(15); // waits for the servo to get there
}

[michealmyers]

Hello World is the blinking LED of programming dammit
Not the reverse!

[SemlerPDX]

This is SO weird -- I just got my (brand new) Uno v3, decided to follow your instructions, I connected it for the first time to the computer, it powers up and the led is blinking. Literally at the same rate in your "hello world" example. I uploaded BareMinimum from the examples just to verify, and then uploaded your led-demo-blink that I copied from your video, and of course, back to the same behavior as when I first took it out of the box and plugged it in. This is my first go at Arduino - do they come with this example pre-loaded? Is there a way to read and decompile whatever is already on an Uno? Or is that not possible once compiled and uploaded? So odd... ;) Thanks for the tutorial series!!

[michaellovitt]

This was quite literally not the hello world program