Jani Hirvinen
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  • Bangkok
  • Thailand
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Jani Hirvinen's Discussions

VIDEO: Arducopter magnetometer offset calibration with ArducopterNG Beta2 code

Started this discussion. Last reply by SupreCharger Jan 3, 2011. 1 Reply

SETUP Video: For all ArducopterNG users, how to calibrate your magnetometer offset with latest ArducopterNG Beta2 code from CLI. This video I am using our latest ArducopterNG beta2 code and DIYDrones…Continue

Tags: Offset, calibration, Video, ArduCopterNG, videos

IR Rangefinders... goes I2C

Started this discussion. Last reply by Michael Pursifull Sep 6, 2011. 1 Reply

Today when I was trying to find something I found something reallyinteresting. Especially for us who is working on AeroQuad/AeroCopter. IRRangefinder with I2C bus well that would fit quite perfectly…Continue

Tags: I2C, Rangefinder, IR


Welcome jpkh

Latest Activity

Andre K. commented on Jani Hirvinen's blog post Adding more features to IOBoard
"Cool project. Today, I have similar fuctionality using Graupner HoTT - except with HoTT I have 2-way option (called "textmode") - where I can tune PIDs , select missions etc from the transmitter. Is there any chance for FrSky/OpenTX…"

Jani Hirvinen replied to OBwan's discussion Anyone know to load a prefetched map in Mission Planner?
"Dave, yeah be careful on the size of the map that you plan to fetch... Even small area can easily be thousands of pictures and bigger areas millions :) I wonder how many pictures there are in total on Google Earth that covers all zoom levels from…"
Jul 17

Jani Hirvinen replied to OBwan's discussion Anyone know to load a prefetched map in Mission Planner?
"Again like dave said, it's simple.. Just go to Flight Plan tab, Zoom to area that you want to pre-fetch. Click right, from popup menu select Map Tool -> Prefetch. System will ask if you want to pre-fetch current display area, say YES and say…"
Jul 16

Jani Hirvinen replied to Eric's discussion Long distance milestone for multirotors? in the group ArduCopter User Group
"Flying manual or autonomous does not really matter. Just like ArduCopter, you can put waypoint to otherside of the world and it would try to reach it but as we cannot carry enough power on board it would fail. Flying autonoumsly you just need to do…"
Jul 16

Jani Hirvinen replied to john's discussion Are there 100,000 lines of code in Arducopter Firmware?
"Simply answer: Yes There are more than 100.000 lines of code that our dev teams have been writing. Originally we had most of the code in normal Arduino sketches but now most of them have been moved to libraries. Most of the code is used on every…"
Jul 10
Ragnar Myhre commented on Jani Hirvinen's blog post Adding more features to IOBoard
"I have connected the IO-board to the APM and to the FrSky receiver according to Jani's diagram ( http://diydrones.com/profiles/blogs/adding-more-features-to-ioboard?id=705844%3ABlogPost%3A1348450&page=1#comments ). But I'm not getting…"
Jul 9

Jani Hirvinen commented on Jonathan Hair's blog post Hobbyking releases HKPilot 2.7
"Chinese people are getting better and better. It's nice to see that they also start to obey western regulations. Sad thing is that APM is on it's end of life time. Like TCIII said, APM has ran out of resources..."
Jul 3

Jani Hirvinen replied to Michael Cook's discussion Gas Powered!
"Clock is your best friend for those.. All airplane, helicopter pilots are using timers to measure flight times. Sure we can also make small flow sensor that measures how much we have been "eating" our gasoline but for now timer is best,…"
Jul 3

Jani Hirvinen replied to Michael Cook's discussion Gas Powered!
"Michael, we run here single, boxer, 4 cylinder gasoline engines on many different types of airframes and usually no problems with vibrations. Single cylinder naturally creates most of the vibration compared to others. Also we are not using any…"
Jul 2

Jani Hirvinen commented on Chris Anderson's blog post Autonomous ball drone bounces off anything
"Nice looking light frame, light and easy to repair. If we compare this and japanese ball drone, is gimbal system only main difference between those? Both gimballed and fixed seems to recover easily from collisions. Ok gimballed allows you to…"
Jul 2

Jani Hirvinen commented on Jani Hirvinen's blog post New jD-IOBoard firmware and Configurator is available.
"Currently configurator software only works with MAVLink firmware. Board is Arduino compatible so it can be programmed easily with normal Arduino IDE in anyways users want.  There are several example programs in our repository at github.…"
Jun 30
careyer commented on Jani Hirvinen's blog post New jD-IOBoard firmware and Configurator is available.
"Hi JD, is there a way to also program "MavLink"-independed blink-pattern? Could you please point me to the right direction? Thank you! "
Jun 29

Jani Hirvinen replied to Safwen's discussion APM 2.5 Connection error - in the group ArduCopter User Group
"Safwen you said: No that is not right, it should be 3.3v as TPS79133 is 3.3 volt regulator so it looks like you have blown your regulator and after that maybe all other 3.3v components too. For example MPU-6000 data sheet says that absolute maximum…"
Jun 27

Jani Hirvinen replied to Shane Hopcroft's discussion MiniAPM v3.1
"Artem, you maybe don't know meaning of decoupling capacitors. Having big capacitors somewhere on output pins does not work. All sensitive electronics needs to have decoupling caps just few millimeters away from power input pins. Usually we are…"
Jun 25

Jani Hirvinen replied to Shane Hopcroft's discussion MiniAPM v3.1
"Ok, why they then say that "No onboard compass" :) As our real APM2.6 board we really do NOT have that compass. Even cutting down traces have shown some issues on some boards. Best way to disable it 100% is by removing whole compass…"
Jun 24

Jani Hirvinen replied to Shane Hopcroft's discussion MiniAPM v3.1
"Hmm just looked those pictures more closer.. their text says: But looking more of those pictures I can clearly see HMC5883 compass on board and no clear ways to disable it. Also it seems to have wrong memory components as…"
Jun 24

Profile Information

About Me:
Electronics, Computers and Aviation is always been my life/hobby/living. Usually play with r/c helis but now moving towards UAV Drones :)

Currently living in Bangkok area where causing havoc with my 450 size helis, parkflyers and drones...

And running jDrones.com site that produces ArduCopter Frames and other parts.
Please tell us a bit about your UAV interest
Bangkok (TH), Helsinki (FI)

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Jani Hirvinen's Blog

Arduino ModeSwitch with OLED display and passthrough ports

Posted on December 20, 2013 at 7:06am 9 Comments

The ModeSwitch saga continues, I am happy to announce our new OLED ModeSwitch project for all. 

Several days we published LED based Flight ModeSwitch project here and I promised to show this OLED project too so here goes. 

This is more advanced compared to our upcoming…


Arduino ModeSwitch with LEDs

Posted on December 18, 2013 at 3:23am 27 Comments

6 Way mode switch gets life...

Finally after several iterations on PCB and electronics design, first jDrones ModeSwitches are getting to daylight.

First boards are fully operational and we are testing them with several of our test flyers. …


Lady GaGa, first wearable hexacopter

Posted on November 11, 2013 at 3:11am 45 Comments



Ok now I have seen it "all"... For some reason I were not stunned to see that it was Lady GaGa who made this first.. But here we are.


On their video it looks a bit badly tuned but it flies. Unfortunately video cannot be embedded to Ning so everyone need…


New jD-IOBoard firmware and Configurator is available.

Posted on November 8, 2013 at 2:10am 8 Comments

jDrones IOBoard with MAVLink & FrSky bridge
New version of jD-IOBoard MAVLink / FrSky bridge software is now available on our download area. This version contains several bug fixes and also new features.

Also new jD-IOBoard Configurator is available on download area. New…


Comment Wall (20 comments)

At 1:19am on June 6, 2010, hawk said…
Yes, very great! I thinks u need to know heli dynamic.If u want to get this I can help u as much as I can. Thanks for ur preformace.
At 11:27am on July 4, 2010, woranon said…

Thank you very much for your help.
I have follow your link and I found it is tons of data to build Adrucopter.
I have read your profile and very glad. That you have stay in Bangkok Thailand.
Because I'm a thai people and live in thailand. I'm a student and try to finish my Bacherlor Degree with multirotor copter.Now i'm study hard for Adrucopter.

Best regards.
At 4:56pm on November 20, 2010, majorpr13 said…
Does this mean the first 50 left from the fah-pah store...when will
the USA ones shipped from the orders at diydrones... and how will
we know when ours has shipped..?
At 9:31pm on November 20, 2010,
Jani Hirvinen
Single users will receive tracking/register number after their packets are shipped, that is normal way how ecommerce systems works. We try to ship 15-25 kits / day untill 1st batch is fully sent, 2nd batch starts to send when all parts are arrived.
At 11:36pm on November 20, 2010, majorpr13 said…
How do we know what batch our order was in???
Thank you
At 9:38pm on January 29, 2011, Tomtom Express said…
Hi Jani,  Are any places to fly a fixed wing in Bangkok ?   I need to spend a few days flying .  Should I think about spending some time in Pattaya or Chiang Mai ? Thanks, Harry
At 7:14am on August 26, 2011, Guang Yao said…

Hi Jani! I am from Singapore (nearby) and I've got a very quick question for the Oilpan. If I connect signal wire of an analog sensor to analog port 8. Can I read it by using analogRead(62) or analogRead(AN8)? Tried to find some related forum posts but can't find a specific answer. Hope to hear from you soon!

At 7:49am on September 24, 2011, Todd Steury said…

Hi Jani. Loving the new hexacopter kit. Very nicely done. Does JDrones have led covers for the motor mounts?


At 5:49pm on September 24, 2011,
Jani Hirvinen

Todd, thank you it was a pleasure to make that. More will come to it. Same goes for mount covers, they are soon on store with additional stuff.

At 9:14am on October 8, 2011, Anis Nielsen said…

Jani, im looking forward to your coming gimbal series ; do you have an ETA to when i can order some ? will they be sold complete with their servo's ?  Cheers!



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