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Failed lens test
04/22/2024 at 08:57 • 0 commentsI bought this lens to see its effect and even though it appears in the product description x10. I have to move the lens too far away so that it covers the entire diameter. I have to try another one
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Why a 2,5" round display?
04/19/2024 at 05:44 • 0 commentsI forgot to comment because I use a 2.5" screen and a lens. Basically for a universal reason. Money!
146€ 5"!!!!!!
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First concept sketch of the project
04/18/2024 at 07:03 • 0 comments -
Round screen configuration
04/18/2024 at 06:17 • 0 commentsBefore deciding to start the project. I was doing tests to be able to connect the round screen with the Raspberry through the GPIO.
Use an original copy of retropie and the instructions to configure the screen on the following web page which in turn mentions a repository with the necessary drivers.
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Link of lens
04/18/2024 at 06:07 • 0 comments -
Choose a lens
04/17/2024 at 14:18 • 1 commentPlacing a magnifying glass between the object and the eye allows the object to be brought closer to the eye, and the eye can focus on the virtual image formed, preferably at the clearest viewing distance. The regular magnification, M, is the ratio between the angle θ' subtended by the image and the angle θ subtended by the object.
A magnifying glass is any positive lens with a focal length less than 250mm. The approximate magnification M provided by the lens is calculated by dividing its focal length by 250.
Equation: M= θ'/θ =(250mm/f)
M=250mm/25mm = x10
I want try with this product. X10 Diameter 75mm with 2.5cm of distance between the display & lens