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, 2014. 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, 2014. 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

Narasimha Krishna Sundeep Kilani replied to Shyam Balasubramanian's discussion Best Battery for Arducopter Quad-C frame
"Hello, The link(http://pubs.media.mit.edu/pubs/papers/paper99.pdf) you have give is not working, can you explain the picture more or please give the mit paper information such as title etc, if possible the paper as well. sundeep."
Jul 28
Shyam Balasubramanian commented on Víctor Mayoral's blog post Erle-brain, an open hardware Linux autopilot
"@Victor Mayoral, was great to meet and discuss with you at GoToCon yesterday. I remember visiting this page when you posted in late 2014, but overlooked some great information!! Thanks for enlightening me, now I am gonna look more closely into…"
Jun 20
Temitope replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hello Please i am having trouble compiling the mavlink arduino code on the website .. any ideas on how to achieve this?"
May 4
Shyam Balasubramanian replied to Edgar Scott's discussion GPS errors occur in Auto in the group ArduCopter User Group
"@Edgar, how many satellites do you get? Is it constant or varying over time. Regards, Shyam"
Apr 21
tommy replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hi Shyam, Will you be making a Part 2 for this?"
Mar 30
Craig Earon replied to Shyam Balasubramanian's discussion Using Camera wipes out GPS signal entirely (Confirmed)
"BTW, tin foil verified the camera interference issue. A rather short piece of flashing strategically set to block the GPS module direction worked well. I'll continue to use the Midland camera for now."
Mar 28
Craig Earon replied to Shyam Balasubramanian's discussion Using Camera wipes out GPS signal entirely (Confirmed)
"Sure. This is simply the first time for me it was an issue. I do like the tin foil suggestion. That would at least provide a cheap way to see if I want to stay with the camera. If GoPros had this issue, I would have found more like it. I was…"
Mar 28
Gustav Kuhn replied to Shyam Balasubramanian's discussion Using Camera wipes out GPS signal entirely (Confirmed)
"Old problem, mentioned numerous times on this forum. Many video cams generate spurious signals well into the gps frequencies. You can try to wrap the camera in tin foil, obviously leaving the lens and controls open :-) I almost lost a quad due to a…"
Mar 28
Craig Earon replied to Shyam Balasubramanian's discussion Using Camera wipes out GPS signal entirely (Confirmed)
"I agree with this issue. I have verified I have the same issue. I am using a Midland Helmet camera. I have used a gimbal too, but just switching on the camera leads to GPS problems (3DR). I am in the process of looking at a solution. I have noted…"
Mar 28
Dani Mas replied to Shyam Balasubramanian's discussion AR.DRONE Vs DIY-DRONES (Question session)
"Hi! Can anybody explain how is now the state of the art of APM vs ARDrone? Last post is from 2013 so I can imagine that APM and ARDrone had will evolve a lot. As far I am concern, APM now have pixhawk. There are a lot of ground station software and…"
Mar 20
A. MS replied to Shyam Balasubramanian's discussion Arducopter with Wifi (Ad hoc networks)
"Hi, Did you find a solution Mr.  Shyam??? Thanks."
Mar 12
Jahanzeb Khan replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hello Shyam, Thanks for the tutorial, just what a "dummy" needed :). Currently I am trying to get live data from apm. I am using arduino uno with the apm. I need to get the updated parameters like IMU, attitude,battery staus etc. Can you…"
Jan 14
Jahanzeb Khan replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hello Shyam, Thanks for the tutorial, just what a "dummy" needed :). Currently I am trying to get live data from apm telemetry. I just want the basic data imu, attitude,battery staus etc. Can you suggest any simple way as I am new to all…"
Jan 14
Shyam Balasubramanian left a comment for Socrates Ponnusamy
"Thanks for your taking interest in my work, Socrates. I have accepted your friend request."
Dec 24, 2014
Quoc-Sang Phan replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Sorry I do not get, the link here say MAVLink command is 14 bytes and having different structure.Is this instruction for earlier version of MAVLink or I'm missing something? Thanks."
Dec 23, 2014
Murtaza Bagwala replied to Shyam Balasubramanian's discussion Swarm copters with Arducopter
"But, suppose if I go to the field where 1 MAV and GCS pair are already there and I install my own GCS and MAV pair on the same field so my question is that will it affect the ongoing communication occurring between first MAV/GCS pair ?."
Dec 15, 2014

Profile Information

About Me:
UAV programmer, Innovator and researcher. I live in the Netherlands and presently working at Thales Defense Systems.

Please visit my LinkedIn for more information about me.
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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