Arduino will not sink

I am trying to program my arduino, I keep getting the error
avrdude: stk500_getsync(): not in sync: resp=0x00

I have tried 2 arduinos and 2 computers.

Here is the code

int led1= 0; // green led 1   
int led2= 1; // green led 2
int led3= 2; // green led 3  
int led4= 3; // green led 4
int led5= 4; // green led 5
int led6= 5; // green led 6
int led7= 6; // green led 7

int led8= 7; // green led 8
int led9= 8; // yellow led 1
int led10= 9; // red led 1

void setup ()  {
  
    pinMode (led1, OUTPUT);
    pinMode (led2, OUTPUT);
    pinMode (led3, OUTPUT);
    pinMode (led4, OUTPUT);
    pinMode (led5, OUTPUT);
    pinMode (led6, OUTPUT);
    pinMode (led6, OUTPUT);  
    pinMode (led7, OUTPUT);
    pinMode (led8, OUTPUT);
    pinMode (led9, OUTPUT);
    pinMode (led10, OUTPUT);
    
    
}

;
void loop() {\
  digitalWrite(led1, HIGH); 
  delay(1000);     
}

Thanks ahead of time

This happens when Pin 0 (RX) is not free ; and when the sketch is uploaded to the Arduino, it is done via this pin. This is probably why you got this error : the sketch couldn't be uploaded.

It has happened to me. Try again by disconnecting everything that is connected to Pin 0 (your led in this case).

Based on the subject, I was going to suggest attaching a brick to it, see if it sinks then. :slight_smile:

Before you start playing with the arduino, keep these things in mind...

Yesterday I found that page. This is very essential to know about.
You may destroy the arduino board by drawing more current via the microcontroller because you have added 10 leds & if the total current is more than 200mA, BOOOMMMMmmm...! the Atmega328 is toasted. BEWARE & BE-AWARE

Check the ""Method #10: Exceed Total Microcontroller Current"".

Good day
:slight_smile:

KirAsh4:
Based on the subject, I was going to suggest attaching a brick to it, see if it sinks then. :slight_smile:

I'm pretty sure it will sink. :wink: