This is a tutorial on how to convert 5v to 3.3v using logic level shifter or also called logic level converter module.
Arduino Blood Pressure Monitor Project - • ARDUINO BLOOD PRESSURE SENSOR TUTORIA...
This logic level shifter is very imporant on sensors and modules that is operation at 3.3v and needs to be connected to 5v Arduino.
The application example will be used on my Arduino blood pressure monitor project whose sensor operates at 3.3v.
Link where you can buy parts:
Logic Level Converter - https://amzn.to/3gAmd3c
Arduino - https://amzn.to/38xuKRJ