Melih Karakelle
  • Canterbury, Kent
  • United Kingdom
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Melih Karakelle's Discussions

Autolanding with Ultrasonic Sensor?

Started this discussion. Last reply by Lucas Tan Sep 12, 2012. 11 Replies

Hi Everyone,I have a question for you. I'm designing auto landing system with ultrasonic sensor controlled elevator.It will take the control in last 3 meters for smooth touch to the ground.And…Continue

Tags: Ultrasonic, Autolanding

 

Melih Karakelle's Page

Latest Activity


Developer
Grant Morphett commented on Melih Karakelle's blog post 1 hours 43 minutes Flight with 2S NCR18650B Batteries
"Great flight.  Love the plane.  Very optimised. Thanks, Grant."
Jul 6
Melih Karakelle commented on Melih Karakelle's blog post 1 hours 43 minutes Flight with 2S NCR18650B Batteries
"Thank you folks :) @Gary , I want to build a solar quadrocopter from scrap but the sun is only a newsletter name in UK :D@RC Tech, LoL, :)"
Jul 6
Quadzimodo commented on Melih Karakelle's blog post 1 hours 43 minutes Flight with 2S NCR18650B Batteries
"Superb stuff Mehil!"
Jul 5

Distributor
RC Tech.se commented on Melih Karakelle's blog post 1 hours 43 minutes Flight with 2S NCR18650B Batteries
"Melih and Vladimir, are you buying your shirts at the same store??"
Jul 4
Mark commented on Melih Karakelle's blog post TIR - Tactical Inspection Robot
"I'm looking for someone who can build something similar, to use the device to inspect on places with limited height, where and endoscope cannot arrive. Height of the TIR should be around 1,5 cm with minimum battery autonomy of few minutes."
Jul 4

Admin
Gary Mortimer commented on Melih Karakelle's blog post 1 hours 43 minutes Flight with 2S NCR18650B Batteries
"Simple is best, love it. The multirotor crowd would be wetting their pants at that sort of endurance at such a low cost."
Jul 4
benbojangles commented on Melih Karakelle's blog post 1 hours 43 minutes Flight with 2S NCR18650B Batteries
"Brill I have two of these laying around."
Jul 3
Melih Karakelle commented on Melih Karakelle's blog post 1 hours 43 minutes Flight with 2S NCR18650B Batteries
"2C = 60min / 2 = 30 minutes If you want to fly more than 30min, they are also valuable for you ;)"
Jul 3
Vladimir "Lazy" Khudyakov commented on Melih Karakelle's blog post 1 hours 43 minutes Flight with 2S NCR18650B Batteries
"Dear Melih. Nice news, you experience a really valuable. 2S - 7A 2S2P - 14A 2S3P - 21A .... But I need a minumum 3S and 30A on take off... "
Jul 3
Melih Karakelle posted a blog post

1 hours 43 minutes Flight with 2S NCR18650B Batteries

Hi Everyone Last weekend I've tested Panasonic NCR18650B batteries on my maiden PolyClub EPP airplane.  I was expecting ~40 minutes flight but I landed after 103 minutes 24 seconds! (1h43m24s) This batteries are definitely working! Only disadvantage of the batteries are low discharge rate. It is max. 2C. So, discharge current should be less than 7A for 3400mA NCR18650B You can find other photos…See More
Jul 3
Melih Karakelle commented on Lester Haines's blog post PRATCHETT stratospheric spaceplane test mission live tomorrow
"@Lester,Thank you for your answer :)I'm getting ready to release a hyper pressurized floating balloon project ~10gr payload. And yes, Ultimate Lithium is the only battery for this kind of applications.  Good luck and keep us updated"
Jun 12
Melih Karakelle commented on Lester Haines's blog post PRATCHETT stratospheric spaceplane test mission live tomorrow
"Good luck,Did you tested the servos into the home freezer? (~-35 degrees Celsius)All metal geared servos have oil/silicon based lubricators between gears and it can be freeze. May be you should clear the gears with alcohol before flight. did you?And…"
Jun 12
Melih Karakelle commented on Melih Karakelle's blog post FLIR Lepton vs Apple Facetime HD Camera
"Yes it is similar. Black plastic surfaces is better than metal because of better temperature balance (if you didn't touch before with warm hands.)Fortunately, Lepton lens is only 3mm diameter. So covering it a little bit easy. You can use any…"
Apr 15
wbal57 commented on Melih Karakelle's blog post FLIR Lepton vs Apple Facetime HD Camera
"How do these handle flat field corrections? On the quarks you have to manually cover the lens as the image degrades to allow it to flat field and recalibrate itself. Is this the same with Lepton? "
Apr 15
Melih Karakelle commented on Melih Karakelle's blog post FLIR Lepton vs Apple Facetime HD Camera
"Hi Aldo,Of course. Just choose "without FLIR Lepton Core (Camera Body Only)" option when you add it into your shopping cart.http://www.flytron.com/thermal-cameras/303-dronethermal-micro-uav-thermal-camera.html We sell the cameras…"
Apr 15
Aldo Vargas commented on Melih Karakelle's blog post FLIR Lepton vs Apple Facetime HD Camera
"By any chance are you guys selling your breakout board? I have a lepton core module, but with the PureEngineering breakout board... So, your breakout is better suited to be implemented faster on a uav... "
Apr 15

Profile Information

About Me:
R&D Engineer
Please tell us a bit about your UAV interest
www.flytron.com
Hometown:
Turkey

Melih Karakelle's Blog

1 hours 43 minutes Flight with 2S NCR18650B Batteries

Posted on July 3, 2015 at 8:51am 8 Comments

Hi Everyone



Last weekend I've tested Panasonic NCR18650B batteries on my maiden PolyClub EPP airplane. 

I was expecting ~40 minutes flight but I landed after 103 minutes 24 seconds! (1h43m24s)



This batteries are definitely working!

Only disadvantage of the batteries are low discharge rate. It is max. 2C.

So, discharge current should be less than 7A…

Continue

FLIR Lepton vs Apple Facetime HD Camera

Posted on April 15, 2015 at 5:45am 4 Comments

Hi Everyone,

Yesterday, I shot this video with my MacBook Air and DroneThermal camera.



The results are promising. Thermal image resolution is only 80x60 pixel but sensitivity is not bad.



BTW, We designed an…

Continue

25° Thermal Camera Cores for Drones

Posted on March 25, 2015 at 12:32pm 11 Comments

Hi Everyone,

Good news for small drones, New FLIR Lepton 25° camera cores just arrived. 



If you have read this post before , I have tested our new camera design with 50° version of Lepton and…

Continue

DroneThermal Analog MAV Cameras, Almost Ready

Posted on March 16, 2015 at 5:30am 17 Comments

Hi Everyone,

I'm happy to present the final prototype of DroneThermal micro size analog (PAL/NTSC) thermal camera. 

The project started 3…

Continue

Comment Wall (6 comments)

At 3:48pm on January 4, 2010,
Moderator
Sgt Ric
said…
hello Melih,
My problem with Endurance-RC and their PCTx is that they didn't tell me the system would not work on my Futaba 6ex 2.4ghz radio, until AFTER I had bought it!

Are there some radios that your system will not work on?
At 10:46pm on January 4, 2010, Melih Karakelle said…
Hi,

I'm using 6ex too :) I'm selling DT-3K headtracker since 8 months, and this device using same method for sending head tracking signals. No problem with all futaba, hitec, etc. I have happy 100+ customer :)
At 6:40am on February 17, 2010,
Developer
Mark Colwell
said…
Melih, Can I use new 420 camera w 2.4ghz tx with OSD? is there video in/out pads?
And I would like to write code for USBtoPPM for Spectrum/JR head tracker.
At 8:01am on February 17, 2010, Melih Karakelle said…
Hi Mark,
Yes you can use it with OSD, camera have + - and video pads on bottomside.
Sorry about Compufly, offer finished now and i sent the products to winners. New products will on stocks in 1 week.
At 7:33pm on August 29, 2010, Ben said…
Hi Melih, I'm interested in getting a few units of USBtoPPM for Futaba. Wondering if you have C# code as example as I want to integrate it into my C# application.
At 2:15pm on February 21, 2013, emre ayvaz said…

Melih bey merhaba,

Forumu 1 haftadır takip ediyorum. Sizin epey bilgili olduğunuzu farkettim. Size birkaç sorum olacak. Benim trexc 700 bir helikopterim var. Bu helikopteri önceden belirlediğim bir profili uçurmak yada sinyal kesildiğinde en uygun yere indirmek gibi aklımda bir kaç proje var. Bu fikirlerden birinide tez olarak sunmayı düşünüyorum. Bunun için arduino gibi bir kart, sensörler ve gps modul gibi parçalara ihtiyacım var. Sonrasında da C ile biraz uğraşıp hazır kodlar üzerinde modifikasyonlar yapacağım gibi gözüküyor.

Size sorum ise bu kontrol kartın hangisi bana uygundur ve aparatları ile ilgili uygun diyata nereden alabilirim? Görüşmek üzere.

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