Sometimes it’s pretty handy to have something in your Arduino projects to give feedback of what’s going on in your circuits.
Interfacing TM1637 4-Digit 7-Segment Display with Arduino UNO
How to Set up Seven Segment Displays on the Arduino - Circuit Basics
Arduino Project Handbook, Vol. 2
Arduino 4-Digit 7-Segment LED Display - ElectronicsHub
Arduino TFT LCD Touch Screen Tutorial
Arduino LCD Set Up and Programming Guide
How to Interface 16x2 LCD with Arduino
Adafruit Metro Mini 328 - Arduino-Compatible - 5V 16MHz ADA2590
Interface an LCD with an Arduino - Projects