Shyam Balasubramanian
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Shyam Balasubramanian's Discussions

Do I need Compass re-calibration when I travel out of country?

Started this discussion. Last reply by Shyam Balasubramanian Apr 21. 2 Replies

Hi Folks,I live in the Netherlands and going to Denmark over the weekend (distance: 800 km, up North). I use the Arducopter v3.0 firmware, and it hovers quite well at home.The magnetic declination as…Continue

Tags: User, Group, ArduCopter, (Multicopter), 2.x

Regulations for outdoor multicopter flight

Started this discussion. Last reply by CrashingDutchman Jan 30. 1 Reply

Hi All,I have been pursuing a research project at a company (in Netherlands) where I need to occasionally fly waypoints outdoors. The task is an autonomous flight within line-of-sight and and some…Continue

Tags: Regulation, Quadcopters

Motors stuck and grumbles.. RC Timer 5010-14, 360kV..Why??

Started this discussion. Last reply by Shyam Balasubramanian Dec 5, 2013. 4 Replies

Hi All,I took a flight today with my giant copter, I found 2 of the motors were not responsive.I tried to spin the motors using simple motor spin test using CLI test in Mission Planner.'Hear' the…Continue

Tags: RC, equipment, 2.X, Arducopter, Planner

So, are we "really using" MPU-6K features for APM 2.5+ ?

Started this discussion. Last reply by Shyam Balasubramanian Nov 15, 2013. 6 Replies

I Quote from APM 2.x release notes:"We’ve tested it (APM 2.x) for months, including lots of flying, and it…Continue

Tags: Algorithms, AutoPilot, ArduIMU

 

Shyam Balasubramanian's Page

Latest Activity

Murtaza Bagwala replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Thanks for your reply Shyam. But, I am not having any drone(Hardware) so, Is there any simulator available which can simulate the environment of drone or is there any other way from which I can test my own custom Mavlink messages without using…"
yesterday
Shyam Balasubramanian replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hi Murtaza, The ArduPilot already uses MavLink messages for communication between the drone and your laptop (PC/ tablet). You do not need additional hardware than there already is. You can start testing your MavLink messages between your PC and a…"
Monday
Murtaza Bagwala replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hi,Shyam nice contribution of yours.  I am new to the DIY drones.Currently I am trying to build a java application that can control MAV(drone) in air for that I came to know about Mavlink library. I read about it but, the thing which I am not…"
Monday
Shyam Balasubramanian replied to Shyam Balasubramanian's discussion Max. number of sensor Arducopter can handle!
"Hi Santosh, I posted this over the forum a year and a half ago, I have moved on with other projects now;) Your statement on the I2C is right. However, I did not integrate the IR sensors then for some reason or the other. If you do manage to…"
Monday
Santosh Kenkare replied to Shyam Balasubramanian's discussion Max. number of sensor Arducopter can handle!
"Hi Shyam, Although the I2C bus is connected to GPS+Compass, I think we can connect multiple other I2C devices on the same bus (isnt that the purpose of having I2C instead of many I/O ports). I dont think there is a need to use another board. As long…"
Sunday
Santosh Kenkare replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Wow thanks. This saved me a lot of time :)"
Nov 1
Vinnie Tsoi replied to Shyam Balasubramanian's discussion "ArduPilot Source Code" Licensing Information
"However, there is nothing that stops someone from taking the open source code and making it proprietary to sell.  Cheerson CX-20 flight controller is a cloned APM 2.5.2 which they are selling as proprietary and their firmware is custom and not…"
Oct 27
Alejandro Hincapié replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hello Shyam! thanks for your attention! I really need your help! I need to build my own custom tool (like Mission Planner(MP) or QGroundControl(QGC) Ground station control (GCS)) to communicate with my quadcopter. the quadcopter that i…"
Oct 21
Guang-Xun Du replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"I have finished Part1, and am looking forward to Part2. Good job!"
Oct 17
Shyam Balasubramanian replied to Randy's discussion ArduCopter-3.0.1 released!
"@mohsein, No need to worry, this is a common cause of concern. Due to Arducopter firmware's extended features, the code size has blown up over time than what APM's flash can handle. You simply have to go to APM_Config.h (or one of the…"
Oct 16
Radian replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Your time is greatly appreciated and really we all ought to be able to find this out easily ourselves. I used part one to get me as far as decoding messages to the point that I can retrieve packets. But I have spent days trying find more specific…"
Oct 16
Shyam Balasubramanian replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"@Waqas, Welcome on board UAV field. I see that your question is too generic and there can be multiple reasons on what may be going wrong. This is a forum for Mavlink discussion, I would suggest you to post your question on the…"
Oct 14
waqas syed replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"myself a newbie in uav fields, i have been learning about apm and mavlink since last few weeks,everything is going is great,but i m getting stuck while compiling apm.n also i would like to know where exactly the data from apm get dump in gcs..??…"
Oct 14
Shyam Balasubramanian replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"@Mohsein, To be honest, I have not created the part II for this which I initially intended to. If I get enough inputs from people on what they want, I could probably consider making one in my free time. - Shyam"
Oct 10
mohsein replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"dear dear is there any part II for this toturial can you give it to us? thank you "
Oct 10
yiannis replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Thanks for this guide Shyam, very helpful. I was wondering if you (or any other member) have had any experience and/or documentation using MAVlink.dll for direct communication between a .Net app and APM/ PX4 (i.e. think of a custom,…"
Oct 10

Profile Information

About Me:
I am a master student in Embedded Systems at Eindhoven University of Technology, Netherlands. Originally from India, currently residing in Netherlands for almost 3 years now.

I am presently working at Thales Defense Systems.
Please tell us a bit about your UAV interest
I am passionate about UAV and trying my best to make this maze into a craze!!
Hometown:
Netherlands

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Comment Wall (7 comments)

At 5:18pm on August 1, 2013,
MR60
Forrest Frantz
said…

so what are your interests?

At 4:30pm on August 13, 2013, Coen said…

So being in The Netherlands, where do you buy your propellers for the arducopter? Mine are a bit damaged after a rough fall, so I need replacements. It will still fly but it's just not that stable.

At 5:28pm on August 13, 2013, Shyam Balasubramanian said…

Hi Coen,

You can purchase it from amazon.de (search for 'propeller 10x4.7' in the search box). Apart from that you can buy it from hobbyking.com (EU warehouse), www.buildyourowndrone.co.uk (same as Arducopter props) are available there. Ebay.nl or ebay.co.uk are also good options, btw!

You do not need to order it from 3DRobotics, USA (it is way too expensive from there, esp. due to shipping). I never order small parts from them. For screws, other hardware items I order from farnell or hobbytronics.co.uk

Btw, where do you live in NL?

Regards..

At 8:54am on August 23, 2013, Todd Stellanova said…
Hi Shyam, I'm a drone sw developer, currently working on updates to the px4 firmware and qgroundcontrol (among other things).

I wonder if you've come across any academic projects involving precision multirotor landing and takeoff? What I'm looking for is tech that will essentially allow a multirotor to land in a box not much bigger than itself. If you think of anything, let me know. Thanks!
At 9:07am on October 17, 2013, Usman Qayyum said…

Thanks Shyam for your comments. Here are some flow diagrams of (stabilize)/(altitude hold) modes. I have downloaded them earlier but they will give you a good idea about the controller. Hope this will provide you a kick start to understand the basic working of PID controllers. Please find the flow diagrams of the controllers attached!.

At 8:30am on October 19, 2013, Ian said…

Hi Shyam,

The batteries I used are wired as 4S4P. They are panasonic 18650B 3.7V

Li-Ion Batteries.

The total pack voltage is about 14V, and total AMP capacity is about 12A.

So it's wires 4 batteries in series for 3.7V x 4. And then those 4 packs

wired in parallel, for 12A.

                 | -(BATT)+  -(BATT)+  -(BATT)+  -(BATT)+  |

                 | -(BATT)+  -(BATT)+  -(BATT)+  -(BATT)+  |

Negative ---|

|--- Positive +14V 12A

                 | -(BATT)+  -(BATT)+  -(BATT)+  -(BATT)+  |

                 | -(BATT)+  -(BATT)+  -(BATT)+  -(BATT)+  |

Regards,

Ian

At 7:29am on February 25, 2014, serkancaska said…

Hi,

I request your advice about the issues below:

1) I want to import all sensor data of apm board (gps, magnetometer...) to matlab/simulink and send trajectory data(a set of 3 axis coordinates of target nodes in order)
2) I want to get speed transfer function of motors real time in order to get PID parameters via matlab/simulink(i know that we can tune PID parameters via mission planner soft. but i want to learn about this method)

 

Which method is useful for the purposes above:

-mission planner soft-matlab connection via serial port

-apm 2.6 and arduimo ide connection via xbee-usb and then arduino ide and matlab connection via serial port. Thank you.

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