Tech4upanama

Black Friday Sale 2019 – Top Portable Projectors

admin — Mon, 14 Oct 2019 04:40:17 +0000

Do you enjoy movies only in the cinema, but traveling to the nearest cinema every time you want to watch a movie feels hectic?

Well, thanks to technology, you can now bring the cinema experience to your living room, bedroom, or even to any outdoor surroundings, provided you own a portable movie projector. In fact, with streaming services like Netflix, Hulu, and Amazon Prime, mini projectors make more sense than ever.

But why portable? Well, because they are trending and make more sense compared to other types of projectors. In fact, the range of pocket and mini projectors available in the market is so wide and impressive, it is probably a nightmare to compare and choose between the best.

You don’t have to worry if the array of options confuses you. In this list of best mobile projectors, we have reviewed and compared some of the top options for our readers. Keep reading to make the best out of Black Friday deals on portable projectors this year.

Best Black Friday Deals on Portable Projector:

Check out or top five products we have selected for our readers.

PIQO Projector

When it comes to a mini projector, the PIQO Projector brings pocket projectors to the next level. The powerful yet small projector measures only 2 x 2 inches. Small, isn’t it?

However, size is not the only feature why we rank it at the top. It supports an impressive 1080p HD format and can cover up to 240 inches of screen. The micro HD projector is designed to offer you on-the-go entertainment. You can keep it in your pocket, a purse, and can use anywhere you want.

When other mini projectors struggle with lumens, PIQO offers 200 lumens, offering you a better than average picture brightness and clarity, even during the day time. The easy to connect projector allows you to connect your devices via Bluetooth or WiFI.

Next comes battery life. This is where mini projectors struggle but not PIQO projector. It offers five hours of battery life for videos and up to 50 hours for music playback. In addition, it charges really quickly, so you don’t need a huge break between movie marathons.

You can also call it YouTube or Netflix projector, as it is compatible with over a million apps, allowing you to stream your favorite shows and movies on a 240-inch screen. With 16 GB of built-in storage, you can save and watch movies and TV shows on-the-go.

This is not it! The smart 3W portable speaker also comes with built-in Hi-Fi speakers, so you don’t need any external speakers.

Pros

No fan noise
You can also charge it when in use
Excellent projector to screen/wall distance ratio (6 meters for 240 inches)
Also supports Nintendo switch
Comes with a one-year warranty

Con

Not waterproof for an outdoor experience

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Topvision Mini Projector

Not as small as our first option, Topvision mini projector is still a portable projector. As it is larger, it comes with better brightness and lumens (2400). However, if you’re looking for a pocket projector, this may be a little big for your pocket. It also weighs around 2.76 lbs, so not as a portable option as some others on our list.

It comes with a powerful lamp with a lifespan of 50,000 hours, so you can use it for years to come. Topvision also offers a two-year warranty.

In terms of compatibility and connectivity, it comes with both USB and wireless connections. You can connect your laptop, smartphone, and a wide range of other devices. It offers the best results from 1.5 to 3 meters, with a projection size of 50 to 176 inches.

Pros

Both WiFi and USB port connectivity
HDMI port
Comes with distortion correction feature
1080p format
Comes with built-in HiFi speakers

Cons

Doesn’t support play protected content
Heavy and a little big in size for a portable projector

RIF6 CUBE Pico Projector

Next on our list is another mini travel projector, the RIF6 CUBE Pico. This one is also super small with a dimension of 2 x 2 x 1.9 inches, which means it is a pocket-friendly projector (weighs around 5 ounces).

The cube-shaped projector comes with a USB port, a headphone jack, a mini HDMI, microSD card slot, a focus wheel, and a power button. Yes, the manufacturer packed a lot in this portable movie projector for its size.

However, when it comes with the same size as of PIQO projector, it lacks power as it offers 50 lumens in terms of brightness and a resolution of 854 x 580 pixels. This means PIQO offers better quality.

Pros

Portable
Lightweight
Comes with multiple options to connect
The package also includes a mini tripod
The lamp comes with a lifespan of 20,000 hours

Cons

Doesn’t offer wireless connectivity
Picture quality is not impressive

Apeman Portable Movie Projector

Apeman is another lightweight pocket projector that weighs only 0.44 pounds with a compact size measurements of 3.86 x 3. 86 x 0.85 inches. Due to its weight and compact size, this portable projector is good for traveling.

The projector comes with a battery life of two and a half hour. This may sound less for long outdoor activities like camping, but you can also charge it using power banks. The lens come with a life span of 45000 hours, which makes for the long term investment.

It comes with multiple exciting features, but the projected screen size is limited to 100 inches. In comparison, you get a screen size of 240 inches with a PIQO projector.

Pros

Compact size
Support 1080p HD format
Easy connectivity through HDMI port
One–year warranty
DLP Display Technology for better quality video

Con

No wireless connectivity
Relatively small battery time

Nebula Capsule II Smart Mini Projector

The last portable projector on our list comes from Anker. Their latest Nebula Capsule II mini projector is an upgrade to their previous popular Nebula Capsule model. The palm-sized mini projector offers 200 lumens and 720p HD for its size.

Not as impressive as PIQO when it comes to picture quality, but the strength of Nebula Capsule II lies in its 8W powerful speakers. The small projector also offers a 100-inch screen size.

In addition, the mini projector for Android offers connectivity and compatibility with Android TV, over 3,600 apps, and several streaming platforms like Hulu and YouTube.

Pros

Powerful speakers
Can connect with chromecast, Google Assistant, and other smart devices
5 hours of battery time
Voice-activated smart projector
Automatic focus

Cons

Not a good option for day time or bright environment
Picture quality and screen size is limited
Not pocket-friendly due to the cylindrical shape

Final Words

If you compare all the above Black Friday deals on portable projectors, you can see that the PIQO projector is a big winner when it comes to size, picture quality, smart features, connectivity, and picture size.

For such a small size, PIQO offers more than your expectations. This is why this one makes the best portable projector option for this Black Friday.

What You Need to Know Before Buying a Video Projector

admin — Mon, 14 Oct 2019 04:05:57 +0000

Do you know that considering replacing your big television box with a projector isn’t such a bad idea? – knowing how to pick the best video projector can help get the most out of your purchase.

Several manufacturers or products of projectors are available in the market today, but it is not every product out there that is good. How do you know the best?

Trust me; you might want to calm your nerves and select wisely with enough information. These include the type available, light sources, perfect resolution, size, and more.

To find out more about the things you need to know before selecting the perfect video projector for you, read further!

Types of Projector

There are basically two types of video projectors, and it would be the best idea to have a good knowledge of them. That’s why I’m going to explain each one of them to you briefly, but you can seek to know more about them later, though. The common types of video projector available are;

Liquid Crystal Display (LCD) Projectors

The LCD projectors make use of polarized mirrors that can pass and reflect some colors of light. These types of video projector make use of a light source that allows light to pass through 3 LCD Chips. This phenomenon separates the 3 LCD chips into the color channels red, green and blue. It then causes them to re-converge through a prism after it has passed through an LCD panel which then controls the intensity and saturation of each color.

Advantages include;

Slightly quieter than DLP projectors
Impressive color brightness
Provides more energy efficiency than DLP projectors
Brighter image output for use in well-lit rooms
Vibrant 3D images with no image ghosting

Digital Light Processing (DLP) Projectors

The DLP projectors can be categorized into two – the one-chip and the three-chip DLP projectors. Each of the chips has more than a million mirrors which reflect light thousands of times per second. About 16 million color can be produced by the one-chip DLP while the three-chip can display more than 35 trillion color which are a major factor in producing a more natural and lifelike image in DLP projectors.

How near each mirror contained in the chip is to one another makes it difficult to have the pixels separated by any spaces. As a result of this, more fluid and crisp images are created compared to LCD technology. One of the best DLP mini projectors you can get in the market is PIQO.

Advantages include;

High color contrast
Delivers a film-like image quality from DVD, Blu-ray and HDTV sources
The 3-chip DLP offers even higher image quality
Deeper, truer blacks than LCD projectors

Other Major Things to Consider When Buying a Projector

Having known the difference between the two major types of video projector we have, you probably are starting to make your decisions. Now, in addition to that, there are certain things to keep in mind if you’re so keen on getting the best. Here’s a list of things you might need to take into consideration and enough information about them to help you choose the best video projector.

Light Output and Brightness

Firstly, you must understand that without enough light output, delivering a bright image quality may not be possible for a big or mini projector. Even in a dark room, if the light output is insufficient, this would definitely make the images look soft and muddy, not sharp. Now, to determine if a video projector outputs enough light to produce crisp image quality, you need to check the ANSI Lumens rating.

The brightness of a video projector is rated in Lumens. The larger the lumens value, the higher the brightness of the image. You might also need to take note of your surroundings to know the mini projector brightness needed. Things like room size, screen size and distance, and ambient room light connections tell a lot about what you need. For instance, for more personal use, the best portable movie projector you could have is PIQO projector. This mini projector delivers a light output of 200 lumens which offers superior picture brightness for a good cinematic experience.

Contrast Ratio

Contrast basically means the amount of difference between the brightest and darkest areas of an image. High contrast ratio video projectors deliver clearly defined shadow detail and deep black levels, giving a sense of depth and dimension to the image. This complements the brightness of the video projector (big or mini projector). Having a room flooded with light, kind of washes out the difference in contrast of most projectors. High contrast ratios deliver blacker blacks and whiter whites. No doubt, it’s something to look out for.

Display Resolution

Another important thing to consider is the display resolution, which somehow plays a major role in the image quality of a video projector. The native resolution of a big or mini projector is defined by the total number of pixels a projector is capable of displaying. For home theater portable movie projectors, higher resolutions are especially important, since the viewer(s) will be closer to the screen.

Resolution typically ranges from 480p on the low end to 720p and 1080p for the HD viewing experience, and up to 4K Ultra HD (relatively expensive) for stunning sharp movies and shows. PIQO, as your best portable movie projector offers a resolution of 1080p, giving you the sharpest picture quality you’ve probably ever seen from a projector.

Portability

A quick set up for an outdoor cinema experience can be made possible with a portable projector. Portability is quite important when it comes to moving around or traveling with your video projector. Besides the fact that you wouldn’t want your projector to be much of a burden, portability also makes installation and setup easier. PIQO, as a pocket-size projector and the smallest and powerful HD portable projector in its class, is perfect for easy use while on camping trips, hangouts and so on. This might be something to consider as well.

Light Sources – Lamps, LEDs, or Lasers

Do you know that projectors are typically powered by one of three light sources and they are the laser, standard lamp, or LED (Light-emitting Diode)? Highlighted below are basic things to know about each one of the three light sources to help you make the right choice of projector.

Laser

They are energy efficient
Considerably brighter than other light sources
No bulb replacement is needed
Wider color range than standard lamps
Better contrast than standard lamps

Led

Commonly used in video projectors including big and portable projectors
Better color control relative to standard lamps
Quieter operation than standard lamps
Lasting power of bulb is up to 20,000 hours

Lamps

Bright light output
The bulb can last up to 3,000 to 4,000 hours and up to 5,000 hours when in eco mode
The most affordable options

Final Words

Of course, there are other optional features to look out for to help you make a good decision such as the audio system, input systems, throw ratio, screen size, and so on.

However, the basic things to consider when choosing a projector have been discussed above. This will lead me to say that PIQO is simply an incredible piece of technology that offers everything we have discussed in this article.

PIQO is recommended as the best portable movie projector you will ever get. Trust me; you’d definitely be happy to have such a powerful HD projector as a portable projector even for an outdoor cinematic experience.

Solar Fridge Guide: Stay Cool Off The Grid

admin — Sat, 12 Oct 2019 19:44:00 +0000

A solar fridge has many advantages over its conventional counterpart. Unlike conventional refrigerators, which run on electric that is likely generated by burning fossil fuels, a solar fridge runs on energy provided directly by the sun.

A solar fridge is also the best sort of cooler for off-the-grid locations where AC power is not available and no conventional fridges dare to tread. They can keep food preserved without the need for utility-provided power, a major advantage in undeveloped areas where electricity availability is intermittent and unreliable.

Different Types of Solar Fridges

Lead battery solar fridge

The earliest modern solar-powered refrigerators and vaccine coolers (which were critical for disaster relief groups who worked far from any electrical grids) used a combination of solar panels and lead batteries, which stored energy for cloudy days and at night in the absence of sunlight to keep their contents cool. Such fridge required heavy lead-acid batteries, which could quickly deteriorate in hot climates. The batteries also wore out quickly and had to be replaced every three years, and contained hazardous materials.

Thermal energy solar fridge

Solar-powered refrigerators got an upgrade in the mid-1990s from lead batteries to phase change materials, which stored thermal energy rather than chemical energy. They did not require batteries, instead using thermal energy from solar power.

Thermoelectric fridge

New Thermoelectric Refrigerators that ran or batteries were inexpensive, but the biggest disadvantage of most of these solar-powered refrigerators, is that they utilized thermoelectric chips. These TE portable refrigerators could only provide cooling of about 35 degrees from air temperature and cannot produce ice.

Lithium batter solar fridge (GoSun)

In contrast, a portable lithium battery pack powers the GoSun Solar Cooler. By combining the technology of brushless compressor technology, with the insulated air gap canopy due to the shading from the GoSun Solar Table, the GoSun Cooler can be powered directly by the portable solar panel or the rechargeable lithium battery. The GoSun Cooler is also completely portable, allowing the consumer to fold up the solar table easily and with its built-in wheels and pull out handle– take it to the beach, while camping, fishing, sailing, or enjoy it in the backyard.

Recommended Solar Fridge: The GoSun Chill

GoSun, the company that revolutionized solar cooking through its patented solar technology, is now launching the GoSun Chill. Supporting its mission to provide homeowners a way to utilize solar for all their cooking and portable electrical needs and to allow them to be prepared in case of emergencies. GoSun is introducing a portable, affordable and fuel-free solar powered cooler/refrigerator/freezer and charging system. The GoSun Solar Cooler utilizes energy from the sun to power a highly efficient DC cooler to keep drinks or food cool, or to freeze, eliminating the need for ice for a cooler.

The Solar Cooler incorporates a portable solar table that has attachable solar photovoltaic panels and a lightweight, compact battery system, that allows for a completely portable power and cooling system. Plus, the shading of the table allows the cooler to stay even colder, even in direct sunlight and operate at temperatures down to -18 degrees c, ( 0 degrees F).

It is important to note, that other portable, battery electric coolers utilize thermoelectric chips, which can only provide cooling of about 35 degrees from air temperature and cannot produce ice. But by combining the technology of brushless compressor technology, with the insulated air gap canopy, the GoSun Cooler can be powered directly by the portable solar panel or the rechargeable lithium battery. The GoSun Cooler is also completely portable, allowing the consumer to fold up the solar table easily and with its built-in wheels and pull out handle– take it to the beach, while camping, fishing, sailing, or enjoy it in the backyard.

A portable lithium battery pack powers the GoSun Solar Cooler. The large 150 watt-hour solar power pack can also power laptops, cell phones, and many other portable accessories, making it the perfect outdoor product to be prepared for a power outage or emergency.

Why a Solar Fridge is Better Than a Conventional Fridge

A solar refrigerator is a cooling unit that uses energy provided by the sun through solar thermal or photovoltaic energy to keep perishable foods from spoiling. They are growing in popularity due to advances in lithium-ion battery technology that allow solar fridges to be light enough for portability yet hold enough charge to cool food for hours or even days. Plus, they require no ice, making them ideal for off-the-grid locations where AC power is not available.

Older versions of portable refrigerators used kerosene, which had several disadvantages to a solar fridge. They burned up to a liter of kerosene per day, mitigating off-the-grid possibilities. Plus kerosene is costly and smelly, and produces significant amounts of carbon dioxide.

A solar fridge provide a means for keeping food safe and preserved without the need to connect to utility-provided power. They can also be used in cottages, camps, and other domiciles as an alternative to absorption refrigerators, as they can run year-round without fears of freon leaks or other chemical concerns.

Why a Solar Fridge is Better for Camping

A solar fridge for camping has numerous advantages over a regular cooler. Here are three of them (although these advantages may not apply to all models of solar coolers).

First, there is no need for ice. Tired of having food turned into a soggy mush if it isn’t protected by three layers of Ziploc bags? Tired of having to drive into town every 24 hours to replenish your supply of ice? Tired of being unable to completely disconnect from the grid? A solar fridge for camping is the way to get out of the ice age. Plus you can now utilize 100 percent of the space within a cooler when ice isn’t part of the equation.

Second, a solar fridge for camping can ironically help you to stay more grid connected by being able to recharge your electronic devices. In the case of the GoSun Solar Cooler, it is powered by a portable lithium battery pack. The large 150 watt-hour solar power pack can also power laptops, cell phones, and many other portable accessories, making it the perfect outdoor product to be prepared for a power outage or emergency. The detachable power bank packs enough juice to charge your phone 20 times over.

Third, the highest-end models can be charged off the grid in only a few hours. In the case of the GoSun Solar Cooler, you can recharge the battery with the solar table, equipped with a 60w panel that delivers a full charge in just three hours and keeps the solar fridge shaded.

How Much More Beer Can a Solar Fridge Hold?

How much ice do you need to get your drinks cold when using a cooler? According to estimates from Business Insider, the ratio is ten pounds for every 12 drinks. That’s a lot of ice—the weight of the coolant ends up being far heavier than the weight of the drinks you and your friends are about to enjoy. Plus it costs $1-3 each time you fill up your cooler.

The volume needed for ten pounds of ice is wasted space that could fit plenty of extra cans or bottles of beer. But if no ice is needed to keep your drinks cool—which is the situation with such electric devices as GoSun’s solar cooler—then the math is very different.

Before we talk about the carrying capacity of a solar fridge, let’s take a closer look at the calculations that show us how much ice we need to chill a drink. Here’s how they break down the math:

Let’s say I have one can of soda or beer… I am assuming the drink (and the aluminum can) start at 22 degrees C. The key here is that the change in energy of the ice (turning to water) plus the change in energy of the drink must be zero. The problem is with the change in energy of the ice. If you assume all the ice melts and all of this energy comes from the decrease in thermal energy from the drinks, the drink could end up colder than the starting temperature of the ice.

And while this is okay in terms of conservation of energy, it just doesn’t happen… This says that with 100 grams of ice, you could end up with a mixture of zero degrees Celsius of water with your drink. Expanding this to a six-pack (of drinks, not my stomach) you would need 600 grams of ice.

What if I think of this in a different way? Instead of determining the amount of ice, suppose I purchase a 10-pound (4.5 kg) bag of ice? How many drinks would this cool down? Using the same calculations above, I get eighteen drinks.

So, what is the answer? I think I would recommend one 10-pound bag for every twelve drinks. This way, not all the ice will melt and you can keep your drinks cool for a longer period of time.

That’s a lot of ice. Fortunately, it is completely removed from the equation when a solar cooler comes into play.

A portable lithium battery pack powers the GoSun Solar Cooler (its 150 watt-hour solar power lithium battery pack can also power laptops, cell phones, and many other portable accessories).

How much beer can it hold?

If you use the GoSun Solar Cooler, it holds 21 bottles of beer, or 55 cans of beer or soda. Based on the size of your ice cooler, this is is an increased capacity of 30 to 50 percent since you do not have to make any room for ice. That’s a great reason for using a solar cooler if there ever was one.