Cannot get I2C LCD to work

[dan]

Depending on the type of adapter (backpack) you are using there may be a problem due to the fact that the Pi's output is only 3.3V and most LCDs require 5V. A level shifter may help but there could be other causes.

I will be doing some testing of the plugin and will let you know if I find any other problem.

I am waiting for a level shifter that I have ordered.

Dan