Description:

It will be painful to program a 4-digit 7-segment display. You will need to wire many pins and build up the number library for them. But this one can do all the heavy work for you, there is a IC on the backside to handle everything , and give you I2C ports, very easy to use!  And this display size is BIG!

• 4-digit, 7 segments, red color
• I2C port
• PCB Dimensions: 120x51mm
• Display Dimension: 120x40mm
• Four mounting holes

Links:

• Adafruit Library
• Tutorial: DIY Clock with RTC Module