MAX7219 Interface with Multiple 7-Segment Displays

Two 2-digit 7-segment screens interfaced with Arduino Nano via MAX7219 are used to display count from 0 to 99 and input voltage from potentiometer.

Link to circuit & code:

Contents:
0:00 Introduction
0:24 MAX7219 Functional Diagram
1:10 Circuit on Breadboard
2:15 C++ Sketch
3:51 Demo
4:32 Conclusion

[writespire]

I want to attach three max7219 which show different data kindly help me