Setting up board and this happened

Using Arduino Programming Questions
1

Arduino: 1.8.15 (Windows Store 1.8.49.0) (Windows 10), Board: "Arduino Uno"

C:\Users\jonah\OneDrive\Documents\Arduino\blinking_light\stoplight.ino: In function 'void setup()':

stoplight:6:6: error: redefinition of 'void setup()'

void setup() {

  ^~~~~

C:\Users\jonah\OneDrive\Documents\Arduino\blinking_light\blinking_light.ino:1:6: note: 'void setup()' previously defined here

void setup() {

  ^~~~~

C:\Users\jonah\OneDrive\Documents\Arduino\blinking_light\stoplight.ino: In function 'void loop()':

stoplight:12:6: error: redefinition of 'void loop()'

void loop(){

  ^~~~

C:\Users\jonah\OneDrive\Documents\Arduino\blinking_light\blinking_light.ino:6:6: note: 'void loop()' previously defined here

void loop() {

  ^~~~

exit status 1

redefinition of 'void setup()'

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

2

Do you have more than one tab open?

3

yes

4

don't :slight_smile:

a sketch can have multiple tabs but you can't have multiple indepedant sketches in tabs
open a new window for each new project

5

And do both tabs have loop and setup functions?

6

yeah

7

thx

8

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