Because I can't show pictures here, i'm gonna copy my Blink example sketch, and paste it here. Because I don't think it's correct.
/*
Blink
Turns on an LED on for one second, then off for one second, repeatedly.
Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN takes care
of use the correct LED pin whatever is the board used.
If you want to know what pin the on-board LED is connected to on your Arduino model, check
the Technical Specs of your board at https://www.arduino.cc/en/Main/Products
This example code is in the public domain.
modified 8 May 2014
by Scott Fitzgerald
modified 2 Sep 2016
by Arturo Guadalupi
*/
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
Because I can't show pictures here, i'm gonna copy my Blink example sketch
Because I don't think it's correct.
Hey, it's a free and open world here - if that rocks your boat don't paste pictures and you are free to think what you want...
Now if what you need is an answer, then asking a specific question can help avoid sarcastic/amusing answers making fun of you (in a very gentle way, we don't take ourselves seriously here, don't take that to the letter but do read the how to use the forum section)
Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN takes care
of use the correct LED pin whatever is the board used.
LED_BUILTIN is a variable, and compiler assigns the right pin number for the different boards.
Gabriel_swe:
Looking at your other post today, you ask what kind of board you have. It is a UNO clone.
Is your issue that the actual on-board LED doesnt seem to flash. If so, since it is a clone, sometimes it is better to address the pin directly. If it is an UNO change LED_BUILTIN to 13 to check that the LED works.
/* am I posting notes correctly?
I'm trying to blink the on-board LED. But that code has no variables. I was expecting a variable to blink pin 13. The LED on the board works, because when I plug it in to the computer, it stays lit. */
One does not necessarily need to declare a variable; LED_BUILTIN is defined somewhere in a file thay one usually does not see as a const int variable or a #define; not behind a computer at this moment to check or test.
Not tested. What does it print?
One does not necessarily need to drclare a variable; LED_BUILTIN is defined somewhere in a file thay one usually does not see as a const int variable or a #define; not behind a computer at this moment to check or test.
TBIsurvive:
/* am I posting notes correctly?
I'm trying to blink the on-board LED. But that code has no variables. I was expecting a variable to blink pin 13. The LED on the board works, because when I plug it in to the computer, it stays lit. */
What is your operating system on the computer?
Which version of the IDE are you using?
Is your uno detected correctly? (device manager in windows)
Does the code upload without problem?
Is this a brand new uno or has you successfully used it before?
