Help with LM35 fan I2C LCD project

Projects General Guidance
19

The steps for succesfully using an analogue LM35 temp sensor:

  1. Give the LM35 it's own (not shared) ground to the Uno.
  2. Switch default analogreference to the internal reference of the Uno, for a supply independent temp readout and a 5x higher resolution (to 0.1C instead of 0.5C).

A digital temp sensor, like the DS18B20 is a much easier solution.
Leo..