text: I'm trying that ...
  Hello everyone,
  I'm trying this test ... i2cset isn't compiled using "mode i" option ... i2c block ...
  # i2cdetect -y 0
  works fine and give the correct i2c bus adress of the LCD -> 0x27
  so i've done
  # i2cset -y 0 0x27 0x08 0x08 turn on the backlight # i2cset -y 0 0x27 0x08 0x00 turn off the backlight
  but cant't write a block i2c command with the mode i option ...
  I've got an error.
  ... i2cset -y 0 0x27 0x00 0x17 0x06 0x4F 0x5B 0x7F i
  I've tried this ... but nothing done.
  i've found a Python Lib name Periphery but no result yet, just the backlight
  The Lib at Github
  i'm use this part only : i2c.py
  it is very easy with Arduino or Raspi ... some lib missing ...
  Some code :+1:
  #!/usr/bin/python
  import i2c
  import pyOmega #routines uSec et mSec attente
  #Open i2c-0 controller
  chip = i2c.I2C("/dev/i2c-0")
  chip.transfer(0x27, [i2c.I2C.Message([0x20,0x08])]) #Turn ON retro-Eclairage
  sleep(5)
  chip.transfer(0x27, [i2c.I2C.Message([0x20,0x00])]) #Turn OFF retro-Eclairage
  chip.close()
  But nothing more .... :crying_cat_face: :worried:
  @Gwena56 So just to make sure I understand you correctly. You are able to turn on and off the backlight of the LED screen, but you are unable to send any other command to it. Is that correct?
  Does it give out any error messages when you try to run the commands? Or is it just that nothing happens after you have run the commands?)