Free CAD Software: https://www.tinkercad.com/
Free Slicer software:
https://ultimaker.com/software/ultimaker-cura/
https://store.anycubic.com/pages/anycubic-slicer
Downloadable 3D models: https://www.thingiverse.com/
Arduino blink LEDs: Arduino blink LEDs resources
Arduino DC motor circuit : Arduino motor circuit resources
Arduino digital keyboard: Arduino digital keyboard
Arduino music player: Arduino music player
EEA Workshop: EEA workshop documents on google drive
3D Printing: 3D printing school on google drive