2017年6月16日星期五

How to choose a Lipo battery for your Armattan Japalura

Armattan Japalura 4 is a good frame to build a FPV quad, its frame Weight is about 56g and the motor to motor is 174mm, it is small and light, many people like use this frame to build a FPV quad. When we decided to build a Armattan Japalura 4 FPV quad, we should search and buy other parts for FPV QUAD, such as motors, lipo batteries escs, FC and others. (There is an Armattan Japalura 4 build article can help you choose your parts ) This article is mainly teach you how to choose Lipo batteries for your Armattan Japalura 4.


From Armattan Japalura 4 official, they recommend 3s lipo – 4S lipo, 650mAh-850mAh; but all the materials are chosen by yourself, so you can decided what battery you need. I recommend you can choose 3s-4s battery, 850mAh-1300mAh and high discharge rate(I like 75C); and the batteries you chose should be light weight and high quality, there are some lipo batteries for Armattan Japalura 4, I think these are very fit in Armattan Japalura 4.

Tattu 850mAh 4S 75C Lipo battery

Specs:
  • Minimum Capacity: 850mAh
  • Configuration: 4S1P / 14.8V / 4Cell
  • Discharge Rate: 75C
  • Max Burst discharge Rate: 150C
  • Net Weight(±20g): 107
  • Dimensions: 61mm Length x 30mm Width x 30.5mm Height
  • Charge Plug: JST-XHR-5P
  • Discharge Plug: XT-30
Price$18.86   Click here to buy it for the USA,
           €16.99  Click here to buy it for the Europe,
Tattu 1050mAh 4S 75C Lipo battery
Specs:
  • Minimum Capacity: 1050mAh
  • Configuration: 4S1P / 14.8V / 4Cell
  • Discharge Rate: 75C
  • Max Burst discharge Rate: 150C
  • Net Weight(±20g): 125
  • Dimensions: 71mm x 36mm x 26mm
  • Charge Plug: JST-XHR-5P
  • Discharge Plug: XT-30
Price: $22.61   Click here to buy it for the USA,
         €13.99   Click here to buy it for the Europe,
Tattu 1300mAh 4S 75C Lipo Battery
Specs:
  • Minimum Capacity: 1300mAh
  • Configuration: 4S1P / 14.8V / 4Cell
  • Discharge Rate: 75C
  • Max Burst discharge Rate: 150C
  • Net Weight(±20g): 155
  • Dimensions: 72mm x 36mm x 29mm
  • Charge Plug: JST-XHR-5P
  • Discharge Plug: XT-30
Price: $28.99   Click here to buy it for the USA,
          €20.99  Click here to buy it for the Europe,

FAQ About Basic Knowledge of Power Bank

What is power bank?

Power bank serve as an extra battery' or external charger for your phone or other electronic devices. It is a portable power source built of rechargeable battery, packed in a small case that can be carried in a handbag or purse. It has at least one input for charging and another recharging port that can be connected to a standard USB cable that can recharge portable electronic devices like smart-phones, media players and tablet PCs.
Most of the newest power-bank models, arrive with built-in Lithium polymer battery, which known by high efficiency and long lifetime.

How do I know which power bank suits my device?

Depending on individual needs and requirements, there are several general criteria to consider when selecting a power bank:

a) Capacity

For example if your phone battery is 1500mAh and is 0% now, a power bank with 2200mAh can charge your phone 1 time. If your phone battery is 3000mAh and is 0% now, a power bank with 2200mAh will not be able to charge your phone to full because the phone battery capacity is higher than the power bank. If you require a power bank that is able to charge your phone several times, you need a power bank with higher capacity.

b) Number of output

1 output to charge 1 device, 2 outputs to charge 2 devices.

c) Output specification

1A-1.5A output is generally for smart-phones, 1.5A-2.0A output is generally for tablets.

How long do I need to charge the power bank?

It's depending on the REAL CAPACITY of the power bank. The larger REAL CAPACITY, the longer charging time may required. Different charging methods may result different charging time as well. Charging with the original charger will be faster than charging with computer USB port.

How do I charge the power bank?

You can charge your power bank via the charger that came with your phone, computer USB port or using other power bank.

What is the lifespan of the power bank?

Generally, a properly maintained power bank can retain up to 80-90% of its original capacity at 400-500 charge and discharge cycle (charge then discharge = 1 cycle, regardless of whether you charge/ discharge it partially or fully). Until your power bank no longer holds sufficient charge to meet your needs, you may choose to purchase a new one.

Where to buy power bank?

Buy power bank online you can choose Tattu 10400mah power bank, the capacity in fact is 10800mah, and use Lithium Polymer battery cell, high weight and high quality. It charges the iPhone 6S almost 5-6 times, iPad air2 almost 1-1.5times or iPad mini4 1.5-2 times, and also charge Android smart-phones and others.

General Information

– A = Ampere
– mA = mili Ampere
– mAh = mili Ampere hour
– Output from computer’s USB port = about 500mA
– Output from wall plug (3-pin plug) = varies (please refer to specific wall plug specification)
– Output from power bank USB port = varies (please refer to specific power bank model)
Source:http://www.genstattu.com/blog/faq-about-basic-knowledge-of-power-bank/

2017年6月12日星期一

Armattan Japalura 4 FPV Quad Frame

The Armattan Japalura is the little brother to the popular Armattan Chameleon. The components used here will work on either the 3" or the 4" baseplate. Traditionally 1407 motors have been used exclusively on 3" builds, but a new trend has emerged putting 4" props on a 3" powertrain. The advantage is a light-weight build with the flexibility to choose either 3" or 4" props and carry an HD camera. This particular configuration can easily handle a Mobius mini.

As the "younger sibling" to the Chameleon, the Armattan Japalura is the fanciest micro frame around, and the second design in Armattan's selection that features aluminum protection.  Inspired by many of the same principals as the Chameleon, the Japalura is a lighter, more compact package that still supports many of today's FPV standards. This "4 inch" frame can handle full-sized miniquad guts, houses your standard HS1177 camera, and shields everything but the battery with two 4mm thick 6061 aluminum ribs.

As with any Armattan release, some of the best features of this frame are the lack of restrictions you have when building.  For example: like usual, the Japalura supports a 30.5mm center stack up to 28mm high.  In addition, the adjustable angle on the aluminum VTX mount supports a variety of transmitter options.  Another feature is the option to mount the battery on the top or the bottom of this machine, just in case you have a strong preference. Lastly, if built with an eye on the weight of all the components, you ought to be able to skate by underneath the United State's FAA Registration restriction of 250g.  

Available in either silver or purple, this frame looks smashing when paired with Oomph 1407 motors.


Specs:

Frame Weight: 56g
Motor to Motor: 174mm
Frame Shape: Freestyle Bus
Bottom Plate Thickness: 3mm
Other CF Thickness: 1.5mm
Aluminum Parts: Aircraft Grade 6061
Motor Mount Pattern: 13xx
Center Stack Mount Pattern: 30.5mm or 20m
Max Center Stack Height: 28mm
Warrantied Parts: Top-to-bottom (all)

Recommended Components

Motor Sizes: 1407/3500-4000kv
ESCs: 12-20a, also can use 30a esc
Prop Size: 4″
LiPo: 3S lipo-4S lipo/650-850mah

How to build a Armattan Japalura 4 FPV Quad? You can click this link to learn how to build a Armattan Japalura 4 FPV Quad.

2017年6月11日星期日

Top 5 10400mah Power Banks Guides

Power Bank is now almost a necessity. When you search “power bank” in website, too many sources, such as so many brands, so many capacities and appearances that make you unable to choose or need to take a lot of time to choose. So trouble! Now we studied that high capacity is more popular, so we make a guides about top 5 high capacity 10400mah power bank that is popular power banks. Hope it can help you when you choose high capacity power banks..

Top1. Tattu 10400mah power bank

Tattu power bank is a new product, it using high quality Lithium Polymer battery cell, with very light weight body. The capacity is 10400mah (but in fact is 10800mAh), it can be used for most popular smart-phone, MP3, iPad and others. Tattu 10400mah power bank using multi protection safety system. The price is best, but new arrival around end July. It is wort waiting for.









Tattu Spec:

Battery type: Lithium Polymer Battery
Capacity: 10400mAh (In fact is 10800mAh)
Output: 5V 1.0A and 5V 2.1A
3 USB charging port

Top2. Xiaomi mi 10400mah power bank

Xiaomi mi 10400mAh power bank use Lithium-ion batteries from LG and Samsung. And compatible with popular smart-phones, and the charging port automatically adjusts the output. The simple design, the casing is nice but is easily scratched. The price is great.

Xiaomi Spec:

Battery type: Lithium-ion Battery
Capacity: 10400mAh
Output: 5V 2.1A
1 USB charging port

Top3. PNY 10400mAh power bank

PNY 10400mAh power bank featuring a cylindrical design, it has a Lithium-ion battery with a charge capacity of 10400mAh. The power bank includes a built-in LED torch and a power level indicator that shows you how much charge remains in the power bank.

PNY Spec:

Battery type: Lithium-ion Battery
Capacity: 10400mAh
Output: 5V 2.1A
1 USB charging port

Top4. Anker 10400mah Portable Charger

This iPhone power bank's battery has the capacity of 10400mAh, compact enough to fit in the hand, charging iGadgets as many as 4 times. It has a facility for rapid charging at 2.4 amps. Also, this power bank contains safety measures features.

Anker Specs:

Battery type: Lithium-ion Battery
Capacity: 10400mAh
Output: 5V 3.0A
2 USB charging port

Top5. Infinie Power Bank 10400mAh

This power bank looks like a book with a 10400mAh battery capacity, with 4 LED indicators and a battery status under each one. Also, it includes 9 layers of protection from over charging and short-circuits. And last but not the least, there are 4 splendid color alternatives.

Infinie Specs:

Battery type: Lithium-ion Battery
Capacity: 10400mAh
Output: 5V 1.0A
2 USB charging port
Source: http://www.genstattu.com/blog/top-5-high-capacity-10400mah-power-banks-guides/

2017年6月7日星期三

Build Frog Race Frog Lite 218mm Quad



Frog Race Frog Lite is a beautiful frame with Carbon Fiber 4mm Arm, it's an easy build and weighs in at only 286g. I really liked this frame, and I decided to build a Frog Race Frog Lite 218mm quad.
About this build:
This build supports Dshot600 and offers OSD for voltage monitoring and a built-in blackbox for tuning.
It can easily carry a Session or Runcam 3 with a bottom mounted lipo battery, but you can top mount at the cost of an HD cam.
These motors are great middle-tier motors, so you've got a wide variety of prop options. I'd probably avoid running 5051s, but you should be fine running up to 5048s.

 Apart from the parts listed below you'll need a few additional items that no bench should be without:
  • A nylon nut set with 2mm nuts and 1mm spacers
  • Shrink tubing
  • 20awg wire
  • Double sided tape
  • Zip ties
  • Blue loctite

Part List

FrameFrog Race Frog Lite 218mm Carbon Fiber 4mm Arm X Frame DIY Frame Kit (4 builds) $27.99
Flight ControllerOmnibus Betaflight F4 Flight Controller V1 STM32 F405 MCU Integrated OSD (17 builds) $24.49
ESCsTATTU 30A BLHeli_S ESC (2-5S, w/Dshot, No BEC) for FPV RC model (4pcs)  $67.96
Motors4x Emax RS2205S 2300KV Racing Edition Brushless Motor for FPV Racing (25 builds) $74.00
PropellersDAL Cyclone Tri-Blade 5″ Prop – T5046C 5″ (50 builds) $2.99
FPV CameraRuncam Swift Mini 130 Degree 2.5mm Micro FPV Camera Build in OSD PAL/NTSC Orange/Black 22*22mm (8 builds) $34.99
FPV TransmitterEachine VTX03 Super Mini 5.8G 72CH 0/25mW/50mw/200mW Switchable FPV Transmitter (70 builds) $13.99
ReceiverFrsky XM+ Micro D16 SBUS Full Range Receiver Up to 16CH (66 builds) $12.99
BatteriesTattu R-Line 1550mAh 95C 4S1P lipo battery pack with XT60 Plug  $44.88
Misc PartsRunCam RC21/RC23/RC25 FPV Lens 2.1mm/2.3mm/2.5mm FOV 165/150/130 Degree Wide Angle for Swift Swift2 Mini $8.99
Marking it Fit

The frame is a little tight, but they offered some extension pieces to raise the stack area by about 4-5mm. If you have a large RX you may need to use them, but an XM+, X4R or Spektrum Satellite should fit fine without them. There's very little documentation, so it's not obvious what these are for. I've seen these extensions used on the back of the frame where the LED panel goes for stack protection and possibly a resting place for a larger antenna. The longer pieces only add about 1mm above the stack, so I don't see much reason to use these.

Finding the right standoffs to build the stack was a challenge, but I found the perfect combination. If you aren’t using the extensions you can use the 10mm screws to start to the stack. I added 2mm nuts with 1mm spacers. The spacers are important because you’ll end up with too much threading for the vibration dampening standoffs. These also offer just enough room to run a battery strap under the ESC board. While the 4-in-1 ESC came with an assortment of nylon standoffs, they’re all far too tall for this frame. You’d probably end up with a 30mm stack if you used those.
Wiring the Motors


Unfortunately EMAX hasn’t caught on to the 4-in-1 trend, so the motor wires were too short. Dig through your wire bin for some 20awg wire as you’ll need only about 12 inches of it. If you need to buy some, be sure to pick up some 14awg and 16awg just to have around for future builds. First you need to screw the motors onto the arms. Use some blue loctite to ensure the screws won’t wiggle loose. Now to extend the wires you want to lay each wire down onto the arm to get the length just right. Touch the end of the extension to the nearest ESC pad, snip, solder and repeat. Finish each joint off with some shrink tubing and you can optionally add some 550 paracord for added protection.
This 4-in-1 ESC is great because it has a 5v regulator that can handle up to 3amps. The Omnibus F4 also has a built-in 5v reg, but it doesn’t support enough amperage to run both the VTX and camera. The ESC plugs directly into the FC using the included connector and the 5v power is passed through the red wire. Now if you’d like a voltage reading via OSD you’ll also need to send power to the vbat pins, but the FC will favor the 5v from the ESC to power both itself and the RX. You’ll need to bridge the RAM and 5V pins to pass power to the VTX/camera.
One thing to note is that this FC uses a linear regulator to produce 5v from vbat. Since we aren’t using the 5v from the FC it will produce unnecessary heat. I didn’t do this, but it is an option if heat becomes a problem. You can also exclude vbat if you don’t need the OSD voltage reading. This would also reduce the heat.
One thing to note is this frame doesn’t come with an XT60 connector, so you’ll have to buy a set of them. I used the black ones listed in the part list. Snip the wires short enough that they won’t pull the battery leads into prop strike range, but not so short that your shrink tube shrinks before you can sleeve it over the terminals.
Mounting the Camera
I chose the Runcam Swift mini for the size and weight reduction, but the frame isn’t necessarily designed for it. You’ll have to use the included conversion bracket which offers a nice snug fit. It should be pretty clear which screw holes to use here, but if you have any questions review the photos below. The only thing I’d like to add is that you should use the nylon washers included with the Runcam outside the aluminum plates. This gives you a nice tight fit.
Wiring the Flight Control
This is a fairly straightforward wiring job, but be sure to pull up an Omnibus F4 board diagram to follow along. Mainly what you need to do is wire the camera and VTX and jump the 5v/RAM pins to send them power. Check the photo below for the big blob of solder just below the RX wires to see where to jump the RAM pins. This mainly passes the 5v from the 4-in-1 to the RAM pins along the VTX/camera rails. Also, I soldered the RX to the inverted UART which functions as UART1 in Betaflight. Finally, I passed power straight from the battery to the vbat pins to monitor voltage via OSD.


Mounting the RX and VTX
Since the XM+ antennas are extremely long I rotated the U.fl connectors to send the antennas back around the RX. This reduced the length by a few cm which offered the perfect length to send the antennas behind the front arms. You can see how I passed the antennas under the motor wires along zip ties secured with shrink tubing. To mount the VTX I added about 3 layers of double sided tape beside the display, added a wad of hot glue to the U.fl connector and taped it to the bottom of the top plate. I used a zip tie to keep the little dipole antenna from falling down into the props.

Configuration
If you wire the motors as illustrated they won’t be in the proper positions in BetaFlight, but BF 3.1 has a great resource command which lets you swap motor positions. You never need to worry about motor wire positions or swapping wires to set the rotation. All of this can be changed in software and allows for the cleanest wiring possible. Here’s a short checklist to follow before you maiden:
  • Flash firmware to the latest version of BF.
  • Use resource commands to order the motors.
  • Use BLHeli Configurator to set motor rotations.
  • Bind TX/RX and set inputs and ranges.
  • Set switches to arm and change modes.
  • Configure OSD.
  • Set your rates.
  • Use camera OSD to adjust your camera settings






2017年5月31日星期三

Tattu 12000mAh Car Jump Starter Reviews - Amazing Starter


Hey guys, we received a great product at the genstattu shop today. It is a very well designed jump starter. Once we received we opened the box and even though it had only 40% charger we were able to start a dead Mercedes with a 3.2 V6 engine. The jump starter is recommended for up to 3.0 gas engine but it had no problem starting even bigger engines.
Product link:
http://www.genstattu.com/tattu-400a-12v-12000mah-jump-starter-power-bank-battery-charger-led.html (USA)
http://www.gensace.de/tattu-12000mah-lifepo4-jumpstarter-with-bms-protection-1219.html (EU)



More details:

This jump start car battery uses LiFePO4 and capacity 12000mah (38.4Wh), they have multi-function that it set 12V and USB outputs, can automatically adjust current for connected devices to reach the best charge efficiency and power. It is a portable power supply.
According to their introduce, power supply booster battery for 3.5L Gas and 2L Diesel Engines, up to 30 times with 400A peak current. And can charge it in the car with the car charger of the package; Powering portable car tools, saving you from driving dilemma.

Tattu Jump starter for car has built-in LED flashlight with three different modes: normal, strobe and SOS.
It is worth to remind that it has short circuit protection. No like other brands, jump starter is extreme safe that even you connect the positive and negative poles together. No worries of any danger of short circuit. It is safety..


Specifications:

Power: 400A Peak 12v
Capacity: 12000mAh
Vehicle: 3.5L Gas and 2L Diesel
Input: 15V , 1A
Output: 12V/8A, 5V/1A , 5V/2A
Output Voltage at auto start: 12V
USB Output: 5V - 2A
Charge Mode: CC/CV 15V-1A
Start Current: 270A
Peak Current: 400A
Applicable temperature range: -10 - 55 degree
Weight: 1.5 lb
Product Dimensions: 8 * 3.9 * 1.7 inches (Length * width * height)
LED Flashlight: Built-in Flashlight
(the specifications come from Tattu official shop data)

In conclusion:

Tattu 12000mah jump starter is amazing starter, safely, multi-function, price is low compare to their quality.
Source: http://www.genstattu.com/blog/tattu-12000mah-jump-starter-reviews-amazing-little-starter/

2017年5月27日星期六

Knowledges to learn when you buy power bank

Nowadays our gadgets are becoming increasingly smaller and lighter so that they can easily be carried in our pockets.For example, mobile phones, which were earlier on quite cumbersome and bulky are now smart (thus called smart-phones). However, with enhanced smart-phones as well as an enormous boost of their usage comes also the necessity to charge them all the time. Thereby, many firms have started introducing power banks onto the market. Genstattu is also release 10400mAh power banks. Today we will give some warm tips when you buy power bank online, you should to know three things.

What is a power bank?

A portable power bank is a transportable charger for devices. As we said, smart-phones, tablets, laptops, as well as cameras need power after a while and power outlets are not readily available everywhere we go. So, a power bank is actually an external or additional charger for your phone as well as for other electronic gadgets and devices.

Power banks are charged in 3 ways: a USB computer port, by way of a charger which usually comes with the phone, or by the use of another power bank. As for USB charging, some battery packs have a built in USB capability for charging (mostly newer power banks, not older models), with a cable that comes with the device but which is separate. This, of course, adds to the number of situations which can go wrong in the usage of the power bank, as some people forget or lose their cable and then they cannot use the power banks to charge their smart-phones. But, when the the device is charged in full, then the cable is without difficulty tucked into the power bank. Thus, for the process of charging a device, what is done is the adapter is taken out and plugged into the correct slot. Also, the higher quality battery packs come with connectors for a variety of device sorts, as for example, Apple, Sony Ericsson, LG, Nokia, Huawei, Samsung, and others.
The time for charging depends of the power capacity of the power bank, which is measured in mAh, or milliamp Hour or milli Ampere Hour (a unit which measures electrical power over a certain period of time, usually measuring the capacity of the energy of a battery - the more mAh there are, the better the capacity is). Thus, the great the mAh rating is, the greater the power capacity of the bank. Which leads to the second thing we need to know about power banks:

The power output and the power capacity

The power output of a battery pack is extremely relevant, as a power bank requires a minimum of 2 ampere to charge. So for every power pack which you wish to purchase, its capacity needs to be 2.5 times greater than your phone's capacity. For instance, if our phone battery is 4,000mAh, we need to purchase a power bank which is 10,000 mAh, as approximately 6,700 mAh is used for charging. This is better than buying the one with the same mAh with your phone.
So basically, it should be noted that if we decide to buy a portable charger, the usage of our phones should be kept in mind. In our time, due to huge demands by consumers, also available are 8,400mAh and 10,400mAh units, and there are chargers which can power up nearly any type of device (including iPads, laptops, iPods, mobile phones from diverse companies, as well as tablets).
For example, here is a list of power bank capacity and charging capacity:
- 1,500mAh battery: smart-phone - one complete charge.
- 5,600mAh battery: smart-phone - two to three and a half complete charges. iPad - about 40%.
- 10,000mAh battery: smart-phone - four complete charges. iPad - 100% complete charge.
Tattu 10400mah power bank the actual capacity is 10800mAh, it can charges the iPhone 6S almost 5-6 times, iPad air2 almost 1-1.5times or iPad mini4 1.5-2 times, and also charge Android smart-phones and other.
The third thing we need to know about power banks is the following:

The price and the quality.

Along with the power capacity or the strength of the battery of the power bank, another item that can help us make rational decisions about purchasing such devices and gadgets (or better said, the chargers for the mentioned) is the price of the power bank. It is par for the course that we should not purchase a portable battery bank which fails to include some basic features such as for example, protection for overcharging, short circuits, as well as for temperature.
So if we are seeking for a portable battery pack or power bank, it is really and truly recommended not to go for the option which is the cheapest. It is not just a saying, but we really get what we pay for, and we can conclude that a mid-range to an upper range price is a great option, without sacrificing quality.
We must conclude that the reason for purchasing a battery pack is that it is a portable charger, thus charging your devices. Sure, there are cheap power banks with allegedly a large capacity, although it is quite possible that they will fail to power up your gadgets suitably or even break down.
And last but not least - a power bank's brand is very important, and we are all familiar with the dependable brands which are popular by their durability, quality as well as resale value. Even though some of the brands can be quite expensive, at least there is a guarantee that they will be used for quite a while.
Source: http://www.genstattu.com/blog/buy-power-bank-online-what-you-need-to-know/