SparkFun 7-Segment Serial Display - Red - COM-11441 - SparkFun Electronics
How to use LED seven segment display and calculate its resistors value - YouTube
7-Segment Display - LED (Blue) - COM-09191 - SparkFun Electronics
Amazon.com: Treedix 0.56" 3-Digit 7-Segment Display Common Cathode 3-Digit LED Display Digital Tube Compatible with Arduino (Blue, 5pcs) : Industrial & Scientific
A Problem Squared on Twitter: "Thank you to those who recommended Posy's youtube video about 7 segment displays! This 6 segment "X" display they designed is particularly satisfying. https://t.co/6tnG3EnyKI https://t.co/PBYc6e6CXo" / Twitter
7 Segment Display Pins- 7 Segment Display Working and Applications
2x LED 7-segment display, common cathode
Working with Seven Segment Displays - Introduction to the basics