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ROBOTS - Do we need them?

Posted by Amrut Burad on

ROBOTS - Do we need them?

So what would be your answer? What do you think? Robots are an asset or a liability? Well, most of your minds will immediately shoot a YES and robots are an asset. Yes. Of course they are! And we definitely need them. But do they even have some disadvantages? So just flip the coin and look at the other side also.  You just can’t ignore the other side. Robots have reduced our work to a great extent. And of course, it is easier to create robots than humans. We can produce them in mass and use them for our convenience....

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LiPo Lithium Polymer Battery Basics

Posted by Amrut Burad on

LiPo Lithium Polymer Battery Basics

It can sometimes be difficult to know which battery is best for your application.

There is a huge variety of batteries available and while many may suit your application your ultimate goal is to purchase a battery pack that will;

-be within your budget
-have a long cycle life
-have the correct size and weight
-give you the longest flight times
-be able to deliver the correct voltage/amp (Power)

We hope this simple guide helps you understand the different types of LiPoly (Lithium Polymer) batteries and which is right for your model.

You may have noticed by now that batteries have different ratings, sizes, plugs, wire, charge rates and chemical makeup. Let’s decipher;
 
Capacity (mAh)

This is usually the biggest number shown on the pack and is measured in mAh (Milliamp/hour) or Ah (Amp/hour). The capacity is the first indicator of the batteries size. To keep things simple, think of capacity (mAh) as the amount of fuel in your cars gas tank. A higher capacity tank will run your car for longer. A 4,000mAh battery will run for twice as long as a 2,000mAh battery.

A 2,000 mah battery will (in theory) run for 1 hr if drained at a constant 2,000 Milliamps.

Discharge (C)

Discharge is the amount of power the battery can ‘push’ out and the number shown ’20C’ is a multiplication of the capacity. For example; A 20C battery can discharge at 20 x 2,000mAh which is 40,000mAh or 40Amps.

This is an important number if you know your motor requires a certain power level.

In addition to this, batteries have a ‘Burst’ rate, which is the amount of power the battery can discharge for a short period, usually 10-20 seconds. A typical battery label may show 20-30C, this would mean a 1,000mAh battery can discharge 20,000mAh constantly or give a sudden and short 10-20 second 30,000mAh (30A) burst of power.

Tip: A higher ‘C’ rated battery will last longer if run at a lower ‘C’ rate. Example: a 30C battery run at 20C maximum will have a longer cycle life than a 20C run at 20C each flight.

Voltage (S)

All lithium Polymer cells in any industry have a nominal voltage of 3.7v per cell. When fully charged a LiPoly cell should be 4.2v and when discharged it should never be below 3v.

You will notice that LiPoly RC packs are made up of layers of multiple cells. If the battery’s rating is 3S this means it is 3 x 3.7v which is 11.1v. It has 3 layers of 3.7v each. In other words, it’s a ‘3 cell pack’.

Weight/Size

For a battery to be right for your model it must fit within the models battery compartment and also balance the plane correctly.

It’s temping to choose the biggest and most powerful battery your model can handle, but this will sacrifice flight performance and if your packs voltage is too high; destroy the ESC or Motor.

Check with your ESC and Motor specification to ensure you have the right voltage pack then check the models CG (Center of Gravity) to decide on the right battery weight.

LiPoly Charging

Always use a lithium Polymer battery charger and never charge the battery above 4.2v per cell. (Example: 2S, never above 8.4v)

Never leave a charging battery unattended.

Never allow the battery’s voltage to fall below 3.2v per cell. (Example: 3S, never below 9.6v)

Be careful with Li-Po handling and usage!! They are good batteries but you should know above terms for it :-)

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Robot An Humanoid or What ?

Posted by Amrut Burad on

Robot An Humanoid or What ?

From our very childhood we have come across the word 'robot', be from the eminent Victoria 'Vicki' (famous as Karishma in India through a popular show) a humanoid robot of 'small wonder' American science fiction to the world of animations. Even androids are humanoid robots built to aesthetically resemble humans. We have seen robots doing varieties of jobs and we often wished we could own a robot to make our life easier and adventurous. A common question struck us what exactly a robot is?

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Robots - A new Generation Human

Posted by Amrut Burad on

Robots - A new Generation Human

Heard a lot about artificial intelligence and robots right? But have you ever wondered how a robot works? Do they have any feelings and senses? We’ve seen robots in many movies and online. Well, everyone has a different picture of a robot in our mind. When most of us think of a robot, the picture that leaps into our mind is something like a humanoid.Most likely a fictional creature like R2-D2 or C-3PO from Star Wars.

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