The optical design will be the most difficult part, but I think I found a solution for this.
Follow the project logs to see the updates. The costs of the prototype amounted to 70Euros.
Video of the working device
Link to the video and Link to the video in German
One of the Prototypes
Hi Sir I want to do this project if you want to help me send me code to my gmail please. emrecbk2002@gmail.com