Testing out WeMos D1 Mini with OLED Display driven by SSD1306

Below is the specs. of the OLED display used:

- Driver IC: SSD1306
- Resolution: 128 x 64
- Interface: I2C

Wire up the OLED display to WeMos D1 Mini according to the below diagram.

How to use shift register (74HC165)

Below is an example on how to use 74HC165 shift register with Arduino Uno. I made this post to record my findings while following Sparkfun's tutorial on shift registers.

The Sparkfun tutorial website on shift registers is here: https://learn.sparkfun.com/tutorials/shift-registers

Wiring Diagram: