Building a TRUE 4k home cinema projector (it’s awesome)
DIY Perks・26 minutes read
The DIY Perks video tutorial demonstrates building a homemade 4k projector with Android capability that rivals a $2,000 cinema projector using aluminum layers, a 100-watt LED, Fornell lenses, and GT2 pulleys for focus adjustment. The use of CPU coolers for LED cooling, high color rendering index LEDs, large format camera lenses, and a front surface mirror at a 45-degree angle are crucial components for achieving vibrant colors, precise focus, and a corrected image projection.
Insights
- Building a homemade 4k projector involves utilizing aluminum layers, a 100-watt LED, Fornell lenses, and GT2 timing belt pulleys for focus adjustment, along with a CPU cooler for LED cooling.
- To achieve optimal image quality, it is crucial to use a lens with a large image circle that covers the entire phone screen, an aperture wider than the LED diameter, and a shorter focal length than the converging lens, while also employing a front surface mirror at a 45-degree angle to correct the flipped image effect caused by the lens.
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Recent questions
How can I build a homemade 4k projector?
By following the DIY Perks video tutorial, you can construct a homemade 4k projector using aluminum layers, a 100-watt LED, Fornell lenses, GT2 timing belt pulleys, and a large format camera lens. The projector is fully Android enabled for standalone operation and utilizes a CPU cooler as a heatsink for LED cooling.
What materials are needed for the homemade projector?
To build the homemade projector, you will need aluminum for constructing layers, a 100-watt LED, a heat sink, a power board, Fornell lenses, GT2 timing belt pulleys, a large format camera lens, and a CPU cooler for LED cooling.
How can I achieve vivid colors in the homemade projector?
To achieve vivid colors in the homemade projector, it is recommended to use a high color rendering index LED. Additionally, the addition of a 100-watt LED, heat sink, and power board will help enhance the color quality of the projected images.
What is the importance of the lens in the homemade projector?
The lens used in the homemade projector plays a crucial role in achieving optimal focus and image quality. It should have a large enough image circle to cover the entire phone screen, a wider aperture than the LED diameter, and a shorter focal length than the converging lens for precise focus.
How can I adjust the focus in the homemade projector?
To adjust the focus in the homemade projector, GT2 timing belt pulleys are utilized for fine adjustments with an LCD panel as the image source. The screen needs to be mounted onto its layer using tape temporarily and then epoxy for permanence, allowing for precise adjustments in focus.
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Summary
00:00
Homemade 4K Projector Tutorial with Android Integration
- DIY Perks video tutorial on building a homemade 4k projector
- Projector is fully Android enabled for standalone operation
- Comparison with a $2,000 cinema projector later in the video
- Explanation of projector fundamentals using light rays and lenses
- Use of aluminum for constructing layers with holes for threaded rods
- Addition of a 100-watt LED, heat sink, and power board for vivid colors
- Recommendation for LED with high color rendering index for better image quality
- Use of CPU cooler as a heatsink for LED cooling
- Utilization of Fornell lenses for bending light rays to achieve projection
- Inclusion of GT2 timing belt pulleys for fine adjustment of focus with LCD panel as image source
15:14
DIY Smartphone Projector with Large Format Lens
- The screen needs to be mounted onto its layer, initially using tape temporarily and then epoxy for permanence.
- The screen is then slid down on top of the focusing platform and screwed to its pillar supports, making the GT2 pulleys captive for precise adjustments.
- The system is entirely internal, simplifying the build process.
- The lens used in the projector needs to have a large enough image circle to cover the entire phone screen.
- Large format camera lenses are recommended due to their larger image circle and affordability.
- The lens aperture should be wider than the LED diameter, with an f9 aperture suitable for a 16mm LED.
- The lens should have a shorter focal length than the converging lens for optimal focus.
- A front surface mirror at a 45-degree angle is used to direct light forwards, correcting the flipped image effect caused by the lens.
