Continue working on the new readme page

README.md

@@ -2,34 +2,26 @@
 
 <table align=center>
     <tr>
-        <td align=center><img src="docs/assets/px4.svg" height=100></td>
-        <td align=center><big>+</big></td>
-        <td align=center><img src="docs/assets/rpi.svg" height=100></td>
-        <td align=center><big>+</big></td>
-        <td align=center><img src="docs/assets/ros.svg" height=100></td>
+        <td align=center><a href="https://px4.io"><img src="docs/assets/px4.svg" height=60></a></td>
+        <td align=center><a href="https://www.raspberrypi.org"><img src="docs/assets/rpi.svg" height=60></a></td>
+        <td align=center><a href="https://www.ros.org"><img src="docs/assets/ros.svg" height=60></a></td>
     </tr>
 </table>
 
-This repository contains documentation, software platform source and RPi image builder for COEX Clover.
+This repository contains documentation, software platform source code and RPi image builder for COEX Clover drone kit.
 
 <img src="docs/assets/clover42.png" align="right" width="400px" alt="COEX Clover">
 
 Clover is a [PX4](https://px4.io)- and [ROS](https://www.ros.org)-powered educational programmable drone kit consisting of an unassembled quadcopter, open source software and documentation. The kit includes Pixracer-compatible autopilot, Raspberry Pi 4 as companion computer, a camera for computer vision navigation as well as additional sensors and peripheral devices.
 
-The main documentation is available at [https://clover.coex.tech](https://clover.coex.tech/).
+The main documentation is available at [https://clover.coex.tech](https://clover.coex.tech/). Official website: <a href="https://coex.tech/clover">coex.tech/clover</a>.
 
-Official website: <a href="https://coex.tech/clover">coex.tech/clover</a>.
-
-## Autonomous flights compilation
+## Autonomous flights video
 
 [![Clover Drone Kit autonomy compilation](http://img.youtube.com/vi/u3omgsYC4Fk/hqdefault.jpg)](https://youtu.be/u3omgsYC4Fk)
 
 Clover drone is used on a wide range of educational events, including [Copter Hack](https://www.youtube.com/watch?v=xgXheg3TTs4), WorldSkills Drone Operation competition, [Autonomous Vehicles Track of NTI Olympics 2016–2020](https://www.youtube.com/watch?v=E1_ehvJRKxg), Quadro Hack 2019 (National University of Science and Technology MISiS), Russian Robot Olympiad (autonomous flights), and others.
 
-## PX4 Dev Summit 2019 talk
-
-[![](http://img.youtube.com/vi/CTG9E9PbJQ8/0.jpg)](http://www.youtube.com/watch?v=CTG9E9PbJQ8)
-
 ## Features
 
 ### Prebuilt RPi image
@@ -38,7 +30,18 @@ Clover drone is used on a wide range of educational events, including [Copter Ha
 
 ### Common robotics software
 
-ROS, OpenCV...
+Prebuilt image for Raspberry Pi includes:
+
+|Software|Description|
+|-|-|
+|Raspbian Buster||
+|[ROS Melodic](http://wiki.ros.org/melodic)|Common robotics framework|
+|[OpenCV](https://opencv.org)|Computer vision library|
+|[`mavros`](http://wiki.ros.org/mavros)|ROS package for communication with the flight controller|
+|Configured networking||
+|Periphery drivers for ROS ([GPIO](https://clover.coex.tech/en/gpio.html), [LED strip](https://clover.coex.tech/en/leds.html), etc)||
+|`clover`|package for autonomous drone control|
+|`aruco_pose`|Package for marker-assisted navigation|
 
 ### QGroundControl Wi-Fi bridge
 
@@ -46,7 +49,7 @@ ROS, OpenCV...
 
 ### Easy autonomous flights programming
 
-Taking off, navigating and land is just:
+By using `clover` package, taking off, navigating and landing is just:
 
 ```python
 navigate(x=0, y=0, z=1, frame_id='body', auto_arm=True)  # takeoff and hover 1 m above the ground
@@ -64,13 +67,21 @@ See [programming documentation](https://clover.coex.tech) for further informatio
 
 ### Optical flow positioning
 
+<img src="docs/assets/optical-flow.gif">
+
 RPi based optical flow....
 
+See [details](https://clover.coex.tech/en/optical_flow.html) in the documentation.
+
 ### ArUco markers recognizing
 
+<img src="docs/assets/aruco.gif">
+
 ...
 
-### Easy work with peripheral devices
+See [details](https://clover.coex.tech/en/aruco.html) in the documentation.
+
+### Easy working with peripheral devices
 
 Preinstalled package for the [LED strip](https://clover.coex.tech/en/leds.html) allows high-level control (such as rainbow effect or color fade) as well as individual LED low-level control:
 
@@ -104,45 +115,53 @@ level = pi.read(12)  # read the state of pin 12
 
 ### Simulator
 
-Gazebo-based simulation.
+<img src="docs/assets/simulator.jpg" width=400 align=center>
+
+Clover repository includes three simulation-related repository for Gazebo-based simulation.
 
 Screenshot...
 
+See details in the [documentation](https://clover.coex.tech/en/simulation.html). The simulation environment also available as a virtual machine image.
+
 ### Remote control apps
 
-...
+<table>
+    <tr>
+        <td>
+            <a href="https://itunes.apple.com/ru/app/clever-rc/id1396166572?mt=8">
+                <img src="docs/assets/appstore.svg" height=40>
+            </a>
+        </td>
+        <td>
+            <a href="https://play.google.com/store/apps/details?id=express.copter.cleverrc">
+                <img src="docs/assets/google_play.png" height=40>
+            </a>
+        </td>
+    </tr>
+</table>
+
+<!-- <a href="https://itunes.apple.com/ru/app/clever-rc/id1396166572?mt=8"><img src="docs/assets/appstore.svg"></a><a href="https://play.google.com/store/apps/details?id=express.copter.cleverrc"><img src="docs/assets/google_play.png" width="15%"></a> -->
 
 ### Community
 
-Community photo...
+<img src="docs/assets/community/collage.jpg" width=400 align=center>
 
 Clover is widely used ...
 
+[Telegram chat](tg://resolve?domain=COEXHelpdesk)...
+
 ### Free and open source
 
-The Clover software bundle is free, open source, and compatible with any PX4-based drone.
+The Clover software bundle is free, open source, and compatible with any PX4/ROS-based drone.
 
-## Raspberry Pi image
-
-Preconfigured image for Raspberry Pi with installed and configured software, ready to fly, is available [in the Releases section](https://github.com/CopterExpress/clover/releases).
-
-[![Build Status](https://travis-ci.org/CopterExpress/clover.svg?branch=master)](https://travis-ci.org/CopterExpress/clover)
-
-Image features:
-
-* Raspbian Buster
-* [ROS Melodic](http://wiki.ros.org/melodic)
-* Configured networking
-* OpenCV
-* [`mavros`](http://wiki.ros.org/mavros)
-* Periphery drivers for ROS ([GPIO](https://clover.coex.tech/en/gpio.html), [LED strip](https://clover.coex.tech/en/leds.html), etc)
-* `aruco_pose` package for marker-assisted navigation
-* `clover` package for autonomous drone control
-
-API description for autonomous flights is available [on GitBook](https://clover.coex.tech/en/simple_offboard.html).
+## Manual installation
 
 For manual package installation and running see [`clover` package documentation](clover/README.md).
 
+## PX4 Dev Summit 2019 talk
+
+[![](http://img.youtube.com/vi/CTG9E9PbJQ8/0.jpg)](http://www.youtube.com/watch?v=CTG9E9PbJQ8)
+
 ## Other resources
 
 * Official documentation: [https://clover.coex.tech](https://clover.coex.tech).