Arduino Project Repositories
Arduino Project Hub https://create.arduino.cc/projecthub
Arduino Instructables https://www.instructables.com/id/Arduino-Projects/
Circuit Digest Projects https://circuitdigest.com/arduino-projects
Hackster Arduino Projects https://www.hackster.io/arduino/projects
Electronics Hub Arduino Projects https://www.electronicshub.org/arduino-project-ideas/
Hackaday Arduino Projects https://hackaday.io/list/3611-arduino-projects
Make Magazine Arduino Projects https://makezine.com/category/technology/arduino/