Arduino 7-Segment Tutorial - 4 Digit Display Pin Diagram
DisplayTemperature on 4 Digit 7 Segment LED using LM35 Sensor in Arduino Uno
Here is a diagram showing the pinout of these displays:
The digit pins D1, D2, D3 and D4 need to be connected to current limiting resistors, since they are the common terminals of the digits. The connections are shown below:
Temperature sensor LM35 connections
After assembling the Temperature sensor data displayed in Degree Celsius
