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Lynxmotion Quadrino Nano – MultiWii Data Logging

We often get user requests for a way to datalog movement as well as GPS position, but did not have a proper DIY solution other than saying that they need to implement a few sensors and define a protocol to get all the information stored to a storage solution. Then we looked around since we knew our Lynxmotion Quadrino Nano UAV & Drone Flight Controller features all the needed sensors to achieve just that and found renes and his multiwiDataLogger project on GitHub. His project fits the need to perfection and it does not require any special MultiWii configuration and therefore can also be used for people who use the Quadrino Nano as a flight controller.

To understand this tutorial you need to be familiar with the Arduino IDE and be comfortable with basic hardware manipulations such as connecting things together. This portion will not be covered in this blog.

Items needed:

QuadrinoNano OpenLog-Module Arduino-Serial-Adapter Noob-SD-Card Jumper-Wires Header
Lynxmotion Quadrino Nano SparkFun OpenLogger Arduino Serial Adapter Noob SD Card Jumper Wires Right Angle Header

 

1 – Soldering the OpenLogger

The OpenLogger arrives without any pins and/or wires attached to it. In order to connect it to something, you will need to get pins or wires soldered to the PCB. Since this is not a tutorial about how to solder we will only show you how we made the connection on our unit. All six pins need to be populated as we need to upload a new firmware to the board. We decided to make the pins face inward to have a more compact final module but this partially hides the pins silkscreen. It is therefore up to you to choose the way you want it.

OpenLog-Front OpenLog-Back
OpenLogger Pins Front OpenLogger Pins Back

2 – Connecting OpenLogger to the Serial Adapter

The OpenLogger already comes with a firmware which will log anything sent on its serial ports, however, the MultiWii firmware will not send any information unless it is requested by a device. This is why we need to load a new firmware to the OpenLogger that will request the information and log it.

This device is made to connect directly to any FTDI Port on an Arduino so the TX/RX pins are already exchanged. In order to reprogram it, you have to connect the FTDI / Serial adapter the right way by inverting the connection for proper TX / RX connection.

OpenLog-QN-Small USB2SERIAL-OpenLogger USB2SERIAL-Connection
OpenLogger Side OpenLogger All OpenLogger Serial Adapter

 

Note: If using the Arduino USB2SERIAL adapter, make sure to install the drivers manually as the manufacturer recommendation listed under Drivers & Setup.

3 – Loading the OpenLogger with the Firmware

To load the firmware you will need the multiwiiDataLogger project files as well as the latest Arduino IDE.

    • Unzip the project (complete as it is in the zip file)
    • Open the “datalogger.ino” file (all other files should open as “tabs” in Arduino IDE)
      • If you use the original multiwiiDataLogger files, you need to set the chipSelect pin to 10 in “cardlogger.ccp”
    • Connect your OpenLogger / Serial Adapter to the computer
    • Select the Arduino UNO board
    • Select your own COM Port
    • Click on the “Upload” button
ZIP-Extract ArduinoIDE-Open ArduinoIDE-chipSelect  USB2SERIAL-Connection-02 ArduinoIDE-Board ArduinoIDE-COM ArduinoIDE-Upload
Unzip Files Open Project Set chipSelect USB Connection UNO Board COM Port Upload

4 – OpenLogger Connection to the Quadrino Nano

To connect the OpenLogger to the Lynxmotion Quadrino Nano you will need one of the UART / Serial cables (provided with the Quadrino Nano). It doesn’t matter which of the two ports you choose on the controller as the MultiWii software is made to use any of them which will use the right protocol.

QN-TX-WH - PinOut OpenLogger-QN OpenLog-QN-Cable QuadrinoNano-Serial
Quadrino Nano UART SparkFun OpenLogger OpenLogger Side Quadrino Nano Side

 

5 – Setup and Insert the SD Card

Make sure the SD card is formatted (usually in FAT32) and insert it in your OpenLogger.

OpenLog-SD-01 OpenLog-SD-02
OpenLogger SD Out OpenLogger SD in

6 – Acquire some Data

That’s the easy part, if you have everything connected only powering the Quadrino Nano by USB or standard with the ESC port the OpenLogger should start writing data on the SD card.

7 – Open and Read Data

The files are created in CSV files and five individual files will be in the log folder.

rc.csv
  • logs the input from the remote control
  • Format: millis;roll;pitch;yaw;throttle
  • values from 1000 to 2000 according to a normal RC receiver, e.g. 1500 = stick centered,
imu.csv
  • logs the raw data from the sensors.
  • Format: millis;accX;accY;accZ;gyroX;gyroY;gyroZ
angle.csv
  • logs the calculated angle.
  • Format: millis;X;Y;heading
  • values for X and Y are -1800 to 1800 in 1/10 degrees, heading is from -180 to 180 in degree
gps.csv
  • logs gps data.
  • Format: millis;hasGPSFix;nunberOFSats;lat;lng;altitude;groundSpeed
  • hasGPSFix: 0 = no, 1 = yes, lat,lng: in 1 / 10 000 000 deg, altitude: meter, groundSpeed: cm/s

We started development of the fifth log which can get the GPS Time and Date but this is not yet implemented. It requires some changes in the MultiWii code to first retrieve the information from the GPS which is not the case at the moment and then include this information in the standard MultiWii protocol. The current code is requesting the info to MultiWii but MultiWii discards it as it’s not part of the default protocol.

GPS_TIME.CSV
  • log gps date and time.
  • Format: millis;raw week;time of week

8 – Using multiwiiDataLogger

The multiwiiDataLogger will create a new folder at each power-up (LOG_X)

Our current version is a slightly modified version which includes some LED behavior for troubleshooting. This was not present in the original code.

Blue Status LED
  • 3 Blinks – Initialization
  • Fast Blink – SD Card Error (no card)
  • Slow Blink – Communication with MultiWii
Green LED
  • Blink – Reading SPI
Open the CVS’s

There are many ways to open CVS files one of which is to simply import them from a Google Spreadsheet with the divider ” ; ” and you will be able to see the data. The use of OpenOffice or Microsoft Excel is also a good option.

multiwiiDataLogger-RC multiwiiDataLogger-IMU multiwiiDataLogger-Angle multiwiiDataLogger-GPS
RC.CSV IMU.CSV ANGLE.CSV GPS.CSV

 

Now that you have all these logs, you can use your own application to graph them. If you do implement them into a custom application we would like to see the end results and also feel free to use the code as you wish to improve and add more functionality.

 

Special thanks to Sebastian Charette for improving the MultiWii and multiwiiDataLogger code.

     
 
 
   
 
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IEEE Spectrum

IEEE Spectrum

Satellite Tracks Carbon Polluters From Space

Posted: 05 Jul 2016 07:22 AM PDT

Claire, a Canadian microsatellite launched in June, is gearing up to take high-resolution snapshots of greenhouse gas plumes
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News post : ElecCircuit.com

News post : ElecCircuit.com

Link to Electronic projects circuits

How to install arduino driver Software (IDE) on ubuntu 16.04

Posted: 04 Jul 2016 09:02 PM PDT

Chayapol want to learning arudino microcontroller for making the robot. Now he like ubuntu os because it very fast and good no ads and no virus. He like to play minecrafe game on this os it very fast and smooth. How to install arduino driver Software (IDE) on ubuntu 16.04 Its installation difficult than others OS, but for us it’s fun to learn it, challenging, customized to meet us. 1. Go to https:www.arduino.cc Click at Download To download the Download the Arduino Software (IDE) , there are all OS very good! You can read more detail on this site. 2. His ubuntu is Linux 64 bits so Click here. Then wait downing file : arduino-1.6.9-linux64.tar.xz and about 93M size. 3.

The post How to install arduino driver Software (IDE) on ubuntu 16.04 appeared first on Electronic projects circuits.
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IEEE Spectrum

IEEE Spectrum

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IEEE Spectrum

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Trossen Robotics Blog

Trossen Robotics Blog

Link to Trossen Robotics Blog

RoboCup 2016 is on!

Posted: 30 Jun 2016 09:36 AM PDT

041

RoboCup 2016 is happening right now, and we’ve sent Andrew to Leipzig Germany to be there!

The international RoboCup community fosters the development of intelligent robots by defining and executing competitions that are used by scientists and students from all over the world to test and demonstrate their robots in attractive, realistic scenarios.

RoboCup is a fantastic tournament where over 3,500 scientists and developers gather from all around the world to exhibit their latest leaps in robotics engineering! The contests are split into leagues, Soccer, Industrial, Rescue, and Junior, each with subcategories to help distinguish the class of robot being exhibited. We’re excited to be in attendance with the HR-OS5 making an appearance, and we will be bringing you a recap of the events!
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