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Since its establishment

CC Intelligence Technology has been committed

to shaping an efficient, interconnected

and trusted commercial world, using technology

Hi, I'm Lei Xiaopei

head of the CamScanner development team

CC is a unicorn enterprise specialized in AI and big data

focusing on text recognition and interpretation

for robotic vision and commercial big data

Camscanner is one of our flagship products

With nearly 400 million users worldwide

it is one of the most downloaded text

and image management apps in the world

Camscanner turns smartphones and tablets into portable scanners

fax machines, and file libraries

Leveraging the tools and platforms provided by Google

CamScanner has achieved great success

I am Wu Zhongze

a development engineer at CamScanner

We started adapting to Android 9 very early

We removed the network library

used by some 3rd party SDKs to reference Apache

tested and adapted the latest power management capability

and the limits for non-SDK interfaces

as well as adapted the common limits of the app

for back-end services and the authorization request

for front-end services

We have fully adopted functions

that create a better customer experience

such as notification enhancement and notch-in screen form factors.

Android Jetpack provides developers like us

with rich development components

and improves our development efficiency

The "permissions" component of Jetpack adapts

well to the authorization configuration for various smartphone brands

thus we avoid having to make specific adaptations

I'm Bu Lingzhuang

a development engineer at CamScanner

Our intention is to develop a versatile

easy-to-use, and efficient app

so versatility is a constant focus for us

Google supports soft-decoding of HEIF static images

in Android O MR1 and in the latest Android Pie

This capability is upgraded to support soft-encoding

and decoding of HEIF

HEIF as a new format is in many ways superior to older formats

advantages include smaller storage space requirement

dynamic image support, and transparency support

We have updated the app

to support importing HEIF format images

and the user experience so far has been positive

We also plan to add export capability into version 9.0

in future scheduled app updates

to fully leverage the new features in the latest operating system

and create more appealing systems

and software experience environments

We envision a future in which we can be the smartest

and most credible commercial platform in the world

Driven by new technologies from Google

we expect to provide more efficient and intelligent user experiences

while creating value for our customers

and driving exponential business growth

with our unrelenting commitment

For more infomation >> Android Developer Story: Chinese developer CamScanner builds a business platform with Android - Duration: 2:39.

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How to Build a Cool & Cheap 3D Printed Mini Drone - Duration: 7:10.

Radio-controlled drones are extremely popular and you can them in all shapes and sizes.

And today, we'll show you that 3D printers and drones are a perfect match.

3D printed drones are light, agile, fast, customizable and above all: easy to fix

The props and electronic components are well covered, so when you crash, you will usually

need only some extra 3D printed parts.

And you can easily print plenty of them!

Also, drones in stores seem to be cheap, but important equipment is often missing - like

the RC transmitter, so the price is usually much higher than what you see at first.

So let's print and build a small 90mm drone that fits in your palm, but it's powered by

a 2-cell lipo battery, so it has a nice kick and can be unbelievably fast.

Equipped with FPV camera and Racerstar 1103 motors, this little beast is suitable for

both indoor and outdoor flying.

Plus, with all important accessories included, we'll squeeze the costs just under 160 USD.

We've selected a reasonably priced setup, however there are tons of different brands

and parts, so feel free to pick a different configuration, but keep in mind the weight

and dimensions.

FPV is optional and you can buy it later, if you want.

Let's start with the frame.

It's our own design and we printed it on the Original Prusa i3 MK3 with PLA Prusament.

It takes less than three hours to print everything and the assembly is super quick.

Take four short pieces of filament and insert them into four holes in the lower body

The ESC board has three soldering pads for each of the motors.

You can solder the wires in any order you want, because we can invert the motor rotation

with a software tool.

Then solder the JST connector for the battery.

Place the ESC onto the printed frame, the arrow points towards the front of the drone

Wrap the motor wires around each of the arms and secure the motor with four screws

Before you connect the flight controller to the ESCs, add four small spacers.

Keep in mind that the header has to meet the pins.

Also, double-check the directional arrow.

It's time to add the camera.

Our camera has four wires - 5V input, ground, video in and video out.

Check the instructions for your camera to learn which cable is which and solder them

onto the flight board

Now let's move onto the RC receiver.

Take a 3-wire cable and solder it to the receiver pins according to the manual.

Locate the RC input pads on the Flight board and solder red, black and yellow wires from

the RC receiver

Use a zip tie to fix the receiver in place

To bind the drone, press and hold the binding button on the receiver and connect the battery

Then enter the binding mode on your RC transmitter

When the light turns solid, it means the binding was successful

Now we can finish the frame.

First, attach the camera holder to the top body with a zip tie

Carefully push the camera through the central hole and insert it into the camera holder

Take two zip ties and push them through the lower and upper body, but don't tighten them

completely yet.

First, add the battery holder, make sure everything sits in the right place and then tighten the

zip ties.

If you want, you can secure the battery with a sticky velcro or you can use a different

method of your choice

The last part is about configuring the software.

Connect the drone to your PC with a microUSB cable, then download Betaflight tool from

Github and run it.

First, place the drone on a leveled surface and calibrate the accelerometer

Then, go to configuration and change the ESC protocol - in our case, it's DSHOT600

Next, set the Receiver mode to serial and the provider to SBUS or IBUS

We need to enable the receiver port, it's usually UART1

After saving the values, the transmitter should now communicate

We will use the 3-position AUX1 switch to set up arming and flight mode switching.

However, you can set arming to one switch and flight mode switching to another one,

the choice is yours.

We have to make sure the motors rotate in the right direction.

Two clockwise and two counter-clockwise

If any of the motors spin the wrong way, download BLHeli config app.

Open the app, connect the drone and change the direction of the selected motor

Don't forget to save the values. Then run the motor config again.

Finally, attach the props.

There are two different kinds - clockwise and counter-clockwise propellers.

Install them in the correct order and you're all set up!

Happy flying!