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

Shyam Balasubramanian commented on Adrián Nagy Hinst's blog post All-in-one portable "ground station" was born in Hungary....
"@Adrian, Great possibility, great potential and thanks for all your efforts. In other words, you have created something new for DIY guys and everyone I am sure everyone would like to have one in their hands. I would crowdsource what I have in my…"
Saturday
Goh DongLiang replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hi Shyam, Thank you for sharing. I would like know how it's done. I am planning to send the message directly from one pixhawk to another pixhawk using telemetry. I have been studying the code for weeks but there are still things that I…"
Aug 27
Andreas Gazis replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Thank you! Scattered info has kept me from fiddling with the code for a long time. This is really neat tutorial. Anything else you want to cover will be greatly appreciated. Personally, I can't wait for the step by step source code guide."
Jul 26
Shyam Balasubramanian replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hi Gary, Sure, please go ahead!! Regards, Shyam"
Jul 25
Ben Traquair replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Thanks! This is a huge help for me. Well done!"
Jul 25
Gary McCray replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hi Shyam, Absolutely great tutorial. Would you mind if I put a copy of your PDF (and future ones) on my Drones Are Fun site for people to link directly to from there? Best Regards, Gary"
Jul 25
Jean Aime MAXA replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Hi Shyam ...... thank you for the great tutorial. It helps me understand mavlink very quickly and in a efficient way.  I actually have some project dealing with mavlink. my project is to measure the radio quality of the RFD 900…"
Jul 25
Shyam Balasubramanian replied to David's discussion 3DR Power Module Limits
"Also, the current draw will depend on your battery, 3S or 4S. Experiment with a power meter (highly recommended). My guess was with a 8000mAh, 3S LIPO battery!! Good luck!"
Jul 15
Shyam Balasubramanian replied to David's discussion 3DR Power Module Limits
"Get a power meter dude (that measures Volt and Amps) from www.rctimer.com. It goes for 26$ or something. I have used it many times. Have a look at this video: https://www.youtube.com/watch?v=HMPHUIqF_W8 You just need to give a little throttle…"
Jul 15
Shyam Balasubramanian commented on Chris Anderson's blog post Hexo+ makes it to $1 million on Kickstarter
"All things being good, the bad thing is they ship the product after 1 year, i.e. by May 2015. I pledged decent money into this!! That is too long to wait. By that time, something better may just show up!! "
Jul 3
Shyam Balasubramanian replied to David Strassman's discussion Steps for recovering 1 cell at 0.00v in a 5s 5000Mah lipo in the group ArduCopter User Group
" Don't open the LIPO.. call up the fire brigade before doing that! The liquid may just spur out, you may not be able to stop it. I did that once, didn't end up well (at least for me) :)"
Jun 23
Shyam Balasubramanian replied to David Strassman's discussion Steps for recovering 1 cell at 0.00v in a 5s 5000Mah lipo in the group ArduCopter User Group
"Hi David, There is a way I have tried many times and it works! In such a situation, charge your LIPO under a different mode combinations with your Lipo charger. For e.g. charge under NiMH or NiCad or LiFe, etc. If your charger complaints try a…"
Jun 23
Shyam Balasubramanian commented on Chris Anderson's blog post Airdog: Yet another Follow-Me copter on Kickstarter!
"Curious, what Autopilot does it use and software? Is it custom made or something to do with Arducopter?"
Jun 17
Kim Eggert replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Thank you very very much,"
Jun 15
Shyam Balasubramanian replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"@Quadzimodo and @Anderl, Glad it was useful to you guys. Thank you for your feedback. Regards, Shyam"
Jun 15
Anderl replied to Shyam Balasubramanian's discussion MAVLink Tutorial for Absolute Dummies (Part –I) in the group ArduCopter User Group
"Mr. Shyam,Thanks for this amazing contribution. Interesting and very instructive. Keep on!"
Jun 15

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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