Beginner Led blinking pin

Hello , I have received my official board today and I try to make blinking a led on my breadboard and nothings happends. With the same circuit on my Arduino it's ok. Can anyone explain me how we choose the pins?

This is an example in Ruby for arduino wich works well.

*require "rubygems"
require "arduino_firmata"

arduino = ArduinoFirmata.connect
puts "firmata version #{arduino.version}"
stat = true
5.times do
    puts stat
  arduino.digital_write 11, stat
 stat = !stat
    sleep 0.2
end
15.times do
    puts stat
  arduino.digital_write 11, stat
 stat = !stat
    sleep 2
  
end*