Creating Arduino Library for PCF8574 I/O Expander

Link to circuit diagram:

Link to my GitHub repository to access PCF8574 library:

Link to my tutorial on interfacing PCF8574 with ATtiny85:

Link to my tutorial on programming I2C circuit of ATmega328 via assembly:

Contents:
0:00 Introduction
0:34 Advantages of Mixing C++ & Assembly Codes
1:35 Circuit Diagram of Implemented Project
2:52 Coding PCF8574 in C++ & Assembly
7:16 Demonstration
7:32 Folder Structure of PCF8574 Library
8:07 Coding Header & Source Files of PCF8574 Library
9:41 Example Sketch
10:22 Conclusion

[qcnck]

Excellent timing. I'm in the process of creating my own library for the PCF and your video is most welcome!

[ejennings]

Very clear and well done video. Also a good example for other similar projects.