Jani Hirvinen
  • Male
  • Bangkok
  • Thailand

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Jani Hirvinen's Groups

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

Jani Hirvinen commented on Stefan Gofferje's blog post Arduino-based mode switch
"You cannot have slaves.. Well long ago we made one board that had this option too but it never got to market as there was not enough demand for it. :("
Nov 5

Jani Hirvinen replied to Gabor H's discussion ublox M8N GPS - doesn't store settings
"@Gisela, No i don't say that Chinese copied those chips. That's the way how they have been designed. And like you said, yes they store only almanac on main chip nothing else. If you need to save settings you need external memory for that. "
Nov 5

Jani Hirvinen replied to Gabor H's discussion ublox M8N GPS - doesn't store settings
"Hmm half of my last message just disappeared... Weird. Yes they can work fine without flash memory. You just loose settings and it goes always to factory settings after powercycle. We have custom made settings that we upload to all our GPSes and we…"
Nov 5

Jani Hirvinen commented on Stefan Gofferje's blog post Arduino-based mode switch
"It provides PPM signal to your trainer port, you need configure one of your channels to receive data from trainerport. Usually it's done in way that Ch1 from PPM signal that connects to trainer port is configured as Ch5 to out eg. going to your…"
Nov 5

Jani Hirvinen replied to Gabor H's discussion ublox M8N GPS - doesn't store settings
"Yes they can work just fine without flash memory"
Nov 5

Jani Hirvinen replied to Gabor H's discussion ublox M8N GPS - doesn't store settings
"To keep the navigation map and last "online" location alive inside gps chip. If you look all jDrones or 3RD uBlox based GPSes. We have external flash memory to store settings."
Nov 5

Jani Hirvinen replied to Gabor H's discussion ublox M8N GPS - doesn't store settings
"Many of Chinese made M8N GPSes are not using memorychip to store settings. M8N chip cannot store settings inside main chip."
Nov 4

Jani Hirvinen commented on Stefan Gofferje's blog post Arduino-based mode switch
"It's 16Mhz and 5V in generally."
Nov 4
Patrick John Joesph Green replied to Jani Hirvinen's discussion Supported devices and connection problems in the group Andropilot Users Group
"Oukitel Original One O901 4.5 Inch Android 4.4 K78 Cell Phone MTK6582 Quad Core 512MB/4GB 3G WCDMA OTG But the GPS is not real so any mode requiring the phones gps won't work. "
Oct 7

Jani Hirvinen replied to Dale Brown's discussion Panasonic NCR18650B 4S3P Tarot 680 Pro - Fail
"Yes your battery pack was just too small. If your copter pulls let's say 20 amp at hover, to have best results with NCRs you need about 4S 20.000mAh battery eg. keep nominal discharge rate around 1C or max at 1.5C (1.5 = 14.000mAh). So how many…"
Sep 24

Jani Hirvinen replied to Monroe King's discussion Cameras for Micro Drones in the group Micro Drone
"Mostly normal daylight cameras will be ok for these. For IR vision or thermal I bet we need to look some other camera and that also means modifications to gimbals. There are few nicelooking micro thermal sensors available now but those are all…"
Sep 24
Mark Blake commented on Jani Hirvinen's photo

APM Wiring, ESC + Receiver

"Very nice illustration, every time I see another simple explanation of a controller or system I have to give a serious thank you to all who help. Thank You!"
Sep 18

Jani Hirvinen replied to Lucas Cesar's discussion Xbee: "Getting Parameters" in the group ArduCopter User Group
"Yeah old apm1.4 did not have any of those. Check that your Xbees are configures 57kbps speeds and then try communication test.  Also make sure that your cable RX/TX are correct way connected to Xtreamebee adapter."
Sep 10

Jani Hirvinen replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"@fred for that Ranger plane it really does not matter what antenna you are using. With stock antennas both on ground and air you can easily get distances over 10km. I would start to look more specific antennas after ranges longer than 15km. If you…"
Sep 9

Jani Hirvinen replied to Luca's discussion APM 2.6 with MT3329 and HMC5883 instead of Ublox LEA-6M in the group ArduCopter User Group
"Both of them are working directly with apm boards. Our firmwares on apm board does not default to any gpses or compasses. At boot time it does auto-detection of gps and switches driver accordingly same goes with compass. Both mtek 3329 and ublox…"
Sep 9

Jani Hirvinen replied to Lucas Cesar's discussion Xbee: "Getting Parameters" in the group ArduCopter User Group
"  It sounds like your Xbee is bricked. They loose rather easily their firmwares and configurations. That is one main reason why we created RFD and SiK telemetry modem sets. Take a look this diydrones post unbrick xbee or you can just…"
Sep 8

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)

Jani Hirvinen's Photos

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Jani Hirvinen's Blog

The DroneCode Project just launched

Posted on October 13, 2014 at 4:00am 5 Comments

Dronecode Project to advance development of Unmanned Aerial Vehicles; 3D Robotics, Baidu, Box, DroneDeploy, Intel, jDrones, Laser Navigation (Virtualrobotix), Qualcomm Technologies, SkyWard, Squadrone System, Walkera and Yuneec among founding members.

Read more at…


Arduino ModeSwitch with OLED display and passthrough ports

Posted on December 20, 2013 at 7:06am 10 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 29 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…


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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