erro when upload sketch

Projects Programming
1

I am a beginer in arduino.
When i upload my sketchs, compiling is ok, but an message apears for all sketch :

avrdude: no programmer has been specified on the command line or the config file
Specify a programmer using the -c option and try again

I don't understand why. Please help me.

2

You need to select the board to compile for/upload to. It does not appear that you have done that.

3

If you are just beginning and have no experience with Arduino world before. First, you should take a look at some articles like Arduino for beginner. It prevents the silly faults and save you a lot of time.

Good luck and have fun.

4

The problem can be caused by using Arduino IDE 1.6.8 or previous with Arduino AVR Boards 1.6.12 or 1.6.14. They are incompatible. You can fix it by either:

  • Updating to a version of the Arduino IDE newer than 1.6.8.
  • Install a version of Arduino AVR Boards other than 1.6.12 or 1.6.14 via Boards Manager.

I have fixed the issue causing the backwards incompatibility so this issue will not occur with Arduino AVR Boards 1.6.15 and upwards.

5

thanks PERT1234.

I fixed my bug as you showed.

thank you so much.