< /p>A DIY projector can be made by a craftsman for a few hundred yuan. Although the effect cannot be compared with a 1080p home theater projector, it is definitely much more shocking than an old-fashioned CRT TV.
You can still enjoy the big picture shock even if you don’t have money. Many netizens are relying on their hard-working and creative hands to DIY their own projectors. Find a discarded LCD panel, search for a driver board online, buy a light bulb from the hardware store, add some other small accessories, spend a few days making a casing at home, and you will have your own DIY projector. You're done.
Free DIY projector design sketches
Compared to ordinary entry-level DIY users, the DIY user we share with you today is a hardcore player. With many successful works, it is well-known in the DIY projector circle.
For users, if they have the ability, it is best to make design sketches in the early stage.
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< /p>DIY projector design sketch
It is true that for most users, it is difficult to create and understand the above pictures. If you really don’t understand it, it doesn’t matter. Just have a general understanding of the principles and components of a DIY projector. If you can’t even understand these, let’s take a step-by-step look at the works of netizens, which will definitely be helpful.
A hardcore netizen DIY projector accessories: 1. LCD screen LTN121XF-L01, retail price is about 300 yuan; 2. 4-in-1 driver board; 3. Osram 150W light source kit (lamp + lamp holder + inductive ballast etc.), the retail price is about 250 yuan; 4. 68mm cold film reflective bowl, the retail price is about 40 yuan; 5. 90mmF130 high temperature resistant aspheric condenser, the retail price is about 40 yuan; 6. 113*138 heat-absorbing insulating glass , retail price is about 20 yuan; 7. Lamp room box; 8. 12.1-inch uses F220/330 Fresnel lens, retail price is about 50 yuan; 9. 12.1-inch uses coated reflector, retail price is about 60 yuan; 10. Focal length The 320 caliber 70 lens retails for about 200 yuan, and the total price is less than a thousand yuan.
< /p>Some spare parts purchased for DIY projector
< /p>Use metal frames to fix the LCD screen to avoid damage caused by vibrations, etc.
< /p>Purchased Osram 150W light source kit (lamp + lamp holder + inductive ballast, etc.)
3 Making the LCD screen back to the top
The DIY projector mainly includes two parts: Chassis and LCD screen. Relatively speaking, the LCD screen is an electronic part, and DIYers need to know some simple circuits; the chassis part has certain requirements for the makers woodworking skills. Lets first understand the design and production of the LCD display part.
< /p>To cut the Fresnel lens, use an ordinary hacksaw blade.
< /p>Fix the LCD screen with screws, etc.
< /p>Light up test effect
< /p>Since there is currently no case produced, there is a certain degree of light leakage.
For players, the purchased products should be carefully tested before starting work. Otherwise, once a certain component If something goes wrong, everything has to be demolished and restarted, which is time-consuming and labor-intensive, and the DIY effect is often not ideal.
4 DIY chassis comparable to professional grade
After the light source and display part are tested and there is no problem, the next step begins Production of the chassis. Here, all the boards used by this player are medium-density fiberboard, which is easier to process and shape. Since the design drawings have been prepared in the early stage, the next step is to drill holes in the board according to the design drawings.
< /p>Medium density fiberboard required for DIY projector chassis
< /p>Plan on MDF
< /p>Processed medium density fiberboard
< /p>Combining fiberboards
< /p>Roughly formed chassis
Of course, there are also skills in assembling the cabinet. The author recommends using emulsion glue or finger-joint glue. These products are emulsion wood adhesives. The board has a certain strength after absorbing water. It is insoluble in water after curing and has good moisture resistance.
< /p>Drill holes in the iron sheet for installing the light bulb kit
< /p>The effect after installing the light bulb assembly
< /p>Install the projection lens on the chassis
< /p>Secure the light bulb kit part
< /p>Effect Test
What is different from ordinary DIY users is that this player designed and installed the lamp component part and the display part separately, which is better helpful for the heat dissipation and stability of the projector.
5DIY projector high-definition effect display back to top
At this point, the DIY projector has taken initial shape. Next, we need to start adjusting and modifying the details to eliminate the strong "cottage flavor" and achieve more ideal results.
< /p>Test results of DIY projector
DIY projectors use highly transparent LCD screens. The irregular stray light inside not only fails to improve the brightness, but also reduces the contrast of the projector. Therefore, it is recommended that users blacken the interior.
< /p> Paint the inside of the chassis black and reinstall and secure all components.
< /p>The completed DIY projector
At this point, you can basically declare it is done. If the producer is still dissatisfied with the existing work, the shell can be decorated with spray paint or other decorations in due course, but the projection performance is basically stable. Let’s take a look at the effects of DIY projectors. Of course, the player projected the image displayed by the projector onto the white wall. After all, the price of an ordinary curtain is often more than 500 yuan.
< /p>DIY projector effect display
< /p>DIY projector effect display
DIY projector effect display
On the whole, the effect is quite ideal. Although it cannot be compared with 1080p high-definition projectors, the physical resolution of the projector has also reached 1024×768, which is much higher than the 800×600 resolution of ordinary projectors priced at 3,000 yuan.
In fact, the principle of the DIY projector is very simple. It is to remove the display screen of the old notebook, and then use the optical principle to enlarge the screen, and then you can get the effect of projecting a large screen. Traditional projectors are optical, mechanical and electrical products that have very high requirements in all aspects, so they cannot be compared.
Two years ago, DIY projectors were still very popular. However, with the launch of a large number of 3,000 yuan DLP projectors, the DIY projector market has shrunk seriously recently. From a technical perspective, there are essential differences between DIY projectors and brands. In addition, the quality assurance and after-sales service of brand projectors are much better than that of DIY projectors. Another important factor why DIY has not become popular is that ordinary readers do not know the existence of such products, let alone make their own DIY projectors.
We hope that through our introduction to DIY projectors this time, more readers can understand the performance and characteristics of DIY projectors. In the later stage, we will also launch more introductions to DIY projectors, so please continue to pay attention to the PConline projector channel.
