This project is a simple demonstration of using an LCD to present useful information to the user—in this case, the temperature from an analog temperature sensor. You will add a button to switch between displaying the in Celsius or Fahrenheit. Also, the maximum and minimum temperature will be displayed on the second row.
The parts required are the same as for Project 23, plus a button and an analogue temperature sensor. Make sure that the temperature sensor only outputs positive values.
16×2 Backlit LCD
Current Limiting Resistor (Backlight)
Current Limiting Resistor (Contrast)