ARDUINO NANO KEEPS BLINKING

Community General Discussion
1

HI ALL

WHEN I PLUG MY NANO INTO MY LAPTOP THE WHITE LIGHT KEEPS BLINKING.

THE BLUE POWER LED INDICATOR IS AS NORMAL.

I TRIED PLUGGING INTO AN INDEPENDENT POWER SOURCE USB AND STILL THE SAME THING.

IS MY NANO DAMAGED?

MANY THANKS
MIKE

2

Please turn off your Caps Lock, that's like shouting.
Have you loaded any sketch into the Nano? If not, the blinking is likely just the bootloader letting you know the board is alive.
(white light? didn't know arduinos used white lights)

3

Hi

Thanks for your prompt reply, i have since noticed the LED that is blinking is the LED with the letter L which i presume stands for LED which i presume is the LED that blinks when the blink code is installed (white/Light green/Light yellow, im colour blind)

Many thanks
Mike

4

The nano clone i got from DX has a pin 13 led that is white indeed.
It had the blink sketch preloaded.

5

you know i was just laying here staring up at the ceiling thinking, its as if the blink sketch has been uploaded onto my nano and now youve just helped me to now sleep.
many thanks oh while im here do you know how i erase the preloaded blinking so that i can have a try at doing the blink sketch myself

ultra newbie mike

6

Load your own program in, will overwrite whatever is there.
Simplest is just change the delay times used in blink, easy way to see that a download has worked.

7

Hi
Thanks for that, I actually did do that last night, i copied and pasted the blink code line by line and changed the time value to 4000 milliseconds then pressed the upload button and nothing happens and in red i get (I presume and error code) here it is - avrdude: stk500_getsync():not in sync:resp=0x30

int led = 13;

void setup() {

pinMode(led, OUTPUT);
}

void loop() {
digitalWrite(led, HIGH);
delay(4000);
digitalWrite(led, LOW);
delay(4000);
}

8

The error code means your Arduino does not respond to the reset that is sent or its respond is not recognized.
Check you set the right board and the right comport in the IDE (the program used to make/edit/upload sketches).

Also read the "Read me, Read this first, How to use.." postings here on the forum.
They teach you how to make proper use of the forum and are meant for us (the other users) to not keep telling new users what you can do and what not (like "don't shout" that you've already met).
I'm just pointing to them, not blaming you for anything.

9

Nano, that uses FTDI RS232RL for USB comm's. Did you install the FTDI drivers? Is it showing up in Device Manager without a yellow! ?

If yes & yes, then check Tools:Serial Port in the IDE and that the correct COM port has been checked.