mBuyNow Talks about the SkyRC GPS Speed Meter

SkyRC GPS speed meter is inspired by GPS devices, designed to quick positioning, record speed and altitude in real time for RC racing/flying and casual biking, driving, long journey or similar machine control indicate applications. 

The highly visible LED light display provides 9 items of information to the operator, time, current speed, peak speed, average speed, altitude, peak altitude, trip and latitude & longitude. This live time communication allows for more accurate passes. The GPS speed meter supports both metric and imperial system of measurements depend on your setting.

Features of SkyRC GPS speed meter

* GPS Coordinator

* 32 parallel satellite searching channels

* Compact and easy to carry

* UTC timestamp logged for each track point

* PC link for data logging & Google map

* Firmware upgradable

* 1 year warranty

* Simple to move from machine to machine

* Built-in 4M flash, recording time up to 6 hours

* Runs on 200mAh LiPo rechargeable battery, can work up to 150 minutes

mBuyNow Co.Ltd has been open their new online store for customers to have a happy shopping experience. To shorten the shipping time, they have opened three warehouses which include UK warehouse, DE warehouse and HK warehouse. 100% satisfaction, 30 days money back and 90 days free repair are promised by mBuyNow. 

Safety Use of Laser Pointers

Laser pointers are usually applied in presentation situations for lectures, business conferences etc. to point at topics of interests. They are visible beams with various power output and changeable colors. Teachers can use it for teaching assistant and demonstrate their lectures vividly. And along with the advance of technology, laser pointers become more and more common in life. While one point need to concern is the safety use of laser pointers especially to human eyes.

This is a temporary optical problem concerning laser pointers with human eyes. Normal problems are flash blindness, glare and afterimages. Flash blindness occurs whenever someone is exposed to a bright light source. While it only lasts for a few seconds, it can be extremely dangerous when someone is involved in a task which requires vision, such as driving. Afterimages can last for several days, and take the form of small spots in the vision. Glare, a reduction of visibility caused by bright light, occurs while the laser is directed at the eyes.

Fortunately, there is no permanent damage to human eyes once harmed by laser pointers. They may cause reduction of visibility and one should use them carefully and properly to avoid dangerous. Moreover, there will be profound optical damages once under long time exposure of laser beams. Nowadays, many laser pointers are tagged as low harm or less power output, but there are still strong power ones. When it is focused on the retina through the lens of the eye, it can cause damage. Continuously staring into a laser through a fully diluted eye for over one minute may cause a retinal burn.

Many regions had regulated the labeling of laser pointers to ensure safety of users. One can find that there is a “caution” label on laser pointers to show their dangerous class and the power output are also showed. Many laser pointers are IIIA devices, meaning that there is a potential for damage with direct exposure to the laser. Class two lasers are less powerful, and are a better choice if you are concerned about safety. Usually, laser power within 1mW is relatively safety. They are mostly used as star pointers or teaching laser pens or just used to play with pets.

Generally laser pointer will not harmful to human if used properly. You cannot take it as a funny toy or just pointed directly at others. Even when you use it outdoors, you cannot just point it at random. Please do keep it away from children otherwise it may be dangerous as kids have little idea about the harm of laser pointers.

Why You Need a Laser Pointer Pen?

A laser pointer is a small laser designed to highlight something of interest by projecting a small bright spot of colored light onto it. Laser pointer pens are the most commonly used form of laser light technology.

The small width of the beam and low power of typical laser pointers make the beam itself invisible in a reasonably clean atmosphere, showing a point of light when striking an opaque surface. As its convenient hand held size, laser pointer pen has become the ideal presentation tool perfect for educational and presentation use.

Laser pointer- let you speak out freely

This little gadget can use to point at things, the lower powered lasers such as 1mW – 5mW are still used for presentations, classes, and meetings. Higher powered lasers are also used by professionals such as engineers on building sites, surveyors and arborist. Because of this function, college students, teachers and business man use it for demonstrations and presentations in classes, and other activities, making listeners feel released.

Good star-pointer

When we were children, our father and mother always told us what’s the name of this start by finger. As the laser pointer appeared, we can now use its beautiful beam light to point out the very position of the star you are looking at. So it is a very good star-pointer.

Good guide

There is just something so compelling and fascinating about laser beams the makes laser shows such an attraction. Therefore, many laser enthusiasts use it in museums and all kinds of exhibitions. Just a reminder, some valuable exhibits are photophobia, so turn off your laser pointer to prevent it may cause damage. Also, this cool gadget is a great companion for travel.

SOS signal

Think about that, you go lost or suffered a predicament, how nice it will be if there is a laser pointer with you. It’s a good tool for pointing out the faraway target and sending out the SOS signal, which will make more fun and safety for your travel.

Fun

A laser pointer is not a toy, but you can use them to play with your child, also your pet. But just a reminder, do not allow children to use laser pointers unless under the supervision of an adult. It may hurt your children. Don’t forget please always buy a maximum output less than 5mW, the lower the better.

You may feel shocked that such a tiny gadget has so many applications. But that’s true and you can make full use of it as you wish. 

Rock Your Life with Super Stable AGM V5 Phone

AGM is the pioneer and supporter of testing standard for outdoor product. AGM OEPT worked out the outdoor environment protection standard for the outdoor communication products, which establish the standard rules for three-proofs mobile phones.

Strong, practical is the main features of AGM mobile phone. AGM will always provide a free communication experience to outdoor users with its solid structure and rich applications.
 
AGM ROCK V5 Android Phone Introduction
Along with the release and hot-sale of MOTO Defy, mobile phone of three-proofs had been widely used and entered into people's daily life. It was more and more popular for outdoor users with its waterproof, dustproof, shockproof and other strong practical functions.

The hot-selling MOTO Defy attracted many mobile phone manufacturers, and various kinds of three-proofs mobile phone emerged. Take Sonim, Getac as a representative, they are far more advanced in the market of this kind mobile phones, while their prices are also beyond catching. Thus phones like AGM with better price and little less performance become a satisfactory choice.

During such environment, AGM launched its most meaningful style AGM ROCK V5. This model used the latest German three-proofs patent and process design, the rugged and unconstrained outlook made it strong and durable, very suitable for outdoor use especially in bad environment. The unique and novel design give a new and comprehensive concept for the three-proofs mobile phone, which fully embodied the innovation spirit of mobile phones.

It was said that the style of phone had already took show on Electric Fair in German IFA, and catches many eyes who are interesting in outdoor sports.

The body uses high density double jet injection fuselage, the unique design make the seal level up to the highest waterproof & dustproof level IP67. That’s to say, it can be emerged in 1 m depth water safely for 30 minutes, anti-dust intrusion can be 99%. High strength of the structure processing make AGM Rock bears more shock and violence than normal mobile phone.

AGM V5 (Rock) 3G dual card dual standby uses a 800MHz CPU in high operation and create super clear calling voice S-Voice especially for outdoor users.

Knowledge of Lamp

I think many people may have little unpleasant experience in the wild night, just because he carries a lamp is not satisfactory, not convenient to use, the light intensity is not enough, the power consumption is too fast and too heavy or unstable quality… and so on. There are a variety of various types of lamps on the market. Now, let’s learn about what kind of lamp meets you need.

Incandescent

In order to look slightly farther in the night outdoor, it’s unthinkable without incandescent light. It is not an easy thing to make incandescent bulb bright and energy saving. Filled with inert gas in the case of certain power bulb can enhance the brightness. For life expectancy, it’s usually fill with krypton and xenon and it is also a special sacrifice life in exchange for high-brightness, high-power halogen bulb.

For the outdoor point, it needs to take into account the use of versatility, reliability and long-term. The common inert gas bulb is appropriate. Of course, using the high brightness halogen bulb lamp also has its own absolute advantage.

LED

Practical use of high-brightness light-emitting diodes brought revolution in the lighting. Low energy consumption and long life are its biggest advantages. Use several ordinary dry batteries enough to maintain a high-brightness LED dozens or even hundreds of hours of lighting. Now the biggest problem of LED is light condenser.

Divergent light source causing it is almost impossible to illuminate the ground outside the 10 meters at night. The luminescent color also makes the lighting sharp decline in the rain and fog outdoors. Therefore, many lamps use several or even dozens of LEDs to try to improve these problems. Unfortunately, the effect is not obvious.

Now, ordinary LED is still more suitable for camping or tent use as its advantage is near light source.

Lamp bowl

An important factor in determining the quality of lighting is a reflection of the light source - light bowl. The ordinary lamp bowl is silver-plated plastic or metal bowl. For the source of high-power incandescent, metal lamp bowl is more conducive to heat and the diameter of lamp bowl determines the theoretical range.

In a sense, not the smooth light bowl, the better. The best effect of light bowl is a circle wrinkles orange peel. It controls the diffraction of light spot caused by the dark grain effectively and makes the lighting area spot more centralized uniform.

Battery

Many cases you may complain about why the lamps out of charge, and blame to the lamp itself. In fact, the choice of battery is also crucial, in general, ordinary alkaline battery capacity and discharge current is ideal. Its price is low and it’s easy to buy. But it is not ideal for large current discharge. NiMH rechargeable batteries energy density ratio is much higher and its recycling is economy, but self-discharge rate is higher too. Lithium battery discharge current is very ideal and it’s suitable for high-power lamps. But now the price of lithium is still relatively expensive.

Design and manufacture the ideal lamps require rich electronic, materials, mechanical, optical knowledge. Understanding of these fundamentals will help you choose the quality of lamps.

How to Adjust Engine

We all know that it’s very important to run-good engine for the normal use and it may affect the life-span of engine. Here we will learn about the engine adjustment.

Oil
You need to use of not less than 20% castor oil fuel or not less than 15% synthetic lubricant fuel. Generally, it is prohibited to use methane fuel (unless you do not have vegetable oil) and run-in in the case of the oil-rich.

Run-paddle
Use bigger paddle than the normal use to running-commissioning.

Engine fixed
Please fastening the engine in a safe test cell or aircraft (fix body in the same time) correctly, you can ask a friend to help. Please don’t stand near the propeller rotation lines as it may dangerous. You can stand in front or behind to operation after you confirm the propeller is fixed tightly. Stand behind to adjust when the engine is power on.

Oil needle adjustment
Parameters of new engine is adjusted on the standard vaporizer, in this case, we need to prepare for using different standard oil. Please open the main oil needle circle and half circle of idle needle to run-in new machine.

Commissioning
Please use battery that voltage does not exceed 1.5V to the glow plug. Running 10-15 minutes
in the 1/3 opening case of vaporizer, 2/3 opening case for 20 minutes and all-opening case for 5 minutes. Extend time appropriately if there is piston ring.

Run-in 5-10 minutes after completion of the primary run with flight paddle until there is no black oil and metal particles in discharged oil. During the time, oil-poor is not allow, and you can adjust the oil-pin according to the actual situation. Last, start the engine with the starter or start stick, non direct hand.

How to adjust the engine's primary and secondary oil needle? What’s the sequence and method? To reach this, you need to learn about the definition of them.

Main oil needle, also known as high speed needle, it is used for the adjustment of the maximum engine speed. Vice needle, also known as the idle needle or low speed needle, it is used for the adjustment of engine idle. The adjust order of the first adjusted is the main oil needle, and then to idle oil needle adjustment

Please note that model engine is not ordinary toy, please pay attention to the safety of others and your. The child should complete in the assistance of parents. Please immediately rinse with water once the oil splashed into eyes.

Which One is Better--Diesel Engine or Gas Engine

When you choosing an engine for your model or other vehicle, the query which kind is better may bother you occasionally. Now we can make a contrast between diesel and gasoline engine. Of course they both have their own advantages and disadvantages, what we need to do are just find the one suitable for our practical use.

First of all, diesel engine is more efficient than gasoline engine as it gets better mileage on average. The internal structure and energy density determined that diesel engine has more power. That’s to say, you can run same mileage with less fuel by using diesel engine. What’s more, its starter is not so complicated as gasoline engine for there are no spark plugs. When under good maintenance, the life span of diesel engine can endure till it was damaged. Its requirement of oil is also extensive, even simply used vegetable oil with mixed oxide can fit it. No wonder diesel engines can be the most reliable & practical one among many other kinds of engines.

Secondly, the low ignition point of gasoline determines the compression ratio of gas engine cannot high, in order to avoid oil and gas combustion. So its thermal efficiency and economy quality are not so good as diesel engine.

While that does not mean gasoline engine is not good enough. Generally, for small models or flexible vehicles, gasoline engine is the first choice. It has small volume which convenient to move and suitable for light load occasions. When given more gear changes it will gain bigger power band. Thus the advantages of the gasoline engine are its small volume, light weight, cheaper price, and high speed under maximum power, low vibration and noise during work. So gasoline engine has been widely used for cabs especially cars. Most cars are using gasoline engine as power system.

Moreover, comparing to the bulky diesel engine, it consumes less fuel and more safe when working. Especially from the viewpoint of environmental protecting, gasoline engine remits less particular matters and is much quieter than diesel engines.

Therefore, the comparison between the two kinds of engines is quite complicated. There are many objective factors which affect the functions of diesel engine as well as gasoline engine. What vehicle you have or need to buy also matters.