GPS + Mikrokopter (III)

June 3rd, 2008 by Speedy 5 comments »

Hi there!

Here is a small video about the calibration of the MK3Mag and the position-hold feature of the NaviCtrl together with MKGPS1.

YouTube - Link: MK3Mag calibration + NaviCtrl with MKGPS1

Mounting of MK3Mag on the NaviCtrl

June 2nd, 2008 by Speedy 5 comments »

Hi Guys,

Today I want to describe the mounting of the MK3Mag on the NaviCtrl board.

To have a good connection you have to solder the multi-pin-connector inverted and fix the MK3Mag with two screws to the NaviCtrl. If you look at the following pictures it should be self-describing.

screw_connectors_01.jpg screw_connectors_02.jpg multi_pin_connector1.jpg mk3mag_on_navictrl.jpg

Without the mechanical connection to the NaviCtrl the MK3Mag may fell of during flight – and it will be VERY difficult to find it again. 😉

GPS + Mikrokopter (II)

June 1st, 2008 by Speedy 14 comments »

Hi there!

Today i finished the construction of my “third” MikroKopter. In the moment the Mikrokopter is a “patchwork” of the other two that i buildt before.

I have made a lot of pictures to illustrate the construction of my very simple MikroKopter. I believe that it is possible to build it up in one day.

Another very cool thing is the new NaviCtrl, which is currently in testing-phase by the MK-Betatesters and will be available for the community in some weeks. It’s a board with an ARM9 32 Bit Mikrocontroller on it (STR911FA). There are also a lot of connections free to have a lot of fun. For example: GPS, MK3Mag, USB, I²C, SPI, UART, … That means that the MikroKopter community has a new “playground” for the next months.

Of course the new NaviCtrl works best together with the MKGPS1 (a GPS board with an ublox LEA-4H chip) and MK3Mag (a three-dimensional magnetic sensor – which is used as a compass). With the actual releases for the Betatesters of the Mikrokopter community i can say that the MikroKopter stays in the air in a way that you would NEVER expect.

I have also filmed the autonomous position hold. I will try to put the video online in the next days.

Ok, enough written – here are some pictures:

01_current.jpg 02_blctrl.jpg 03_simple_connections_ctrl_motor.jpg 04_position_of_bl-ctrl.jpg 05_flight_ctrl_added.jpg 06_navictrl_top.jpg 07_navictrl_bottom.jpg 08_mkgps1_bottom.jpg 08_mkgps1_top.jpg 09_final_kopter_01.jpg 10_final_kopter_in_action_1.jpg 11_final_kopter_in_action_2.jpg

So the MikroKopter gets more stable and now it’s time to test the FPV CCD camera from Sony together with the EPI-OSD (on screen display) and my video goggles.

More later…


FPV (first person view) Part 2

May 21st, 2008 by Speedy No comments »

A lot of new toys…

Hi guys. Time went by and I had to do a lot of private work in other topics than Mikrokopter. But now “I’m back”.

I used the time to order interesting things like a new sharp CCD camera from Hong Kong, MK3MAG (new three dimensional magnetic sensor from H&I) and an OSD (on screen display) from the EPI team. Also my stock of LiPo got an upgrade. And finally, a new “standard” MK frame has to be build. This time i want to do it “as simple and lightweight as possible” – and with newest Hardware (FC 1.1, BLC 1.1, OSD, MK3MAG, NavCtrl with GPS).

In the moment my “High End” MikroKopter is not finished yet and so this is only a preview blog entry.

But to give you a little impression of the upcoming features of my MikroKopter, here are some pictures:

working_place.jpg working_place_1.jpg mk3mag.jpgepi_osd_thermal_top.jpg epi_osd_thermal_bottom.jpg

More details later 😉

FPV (first person view) Part 1

March 24th, 2008 by Speedy 6 comments »

Hi Guys!

A lot of things happened and i had a little bit of sparetime to improve my MikroKopter with some interesting features. Today the topic is first person view hardware.

My first tests were with a modified 2.4 GHz CMOS camera (10mW transmission power). But the range of the video transmitter (or the quality of the receiver) was not enought to have a stable video signal at ground.

That was the reason for me to buy a 200mW 2.4 GHz transmitter in Hong-Kong and a better antenna for the receiver (2.4GHz 8dBi patch antenna from – If you buy components from abroad, be aware of the tax. I had some problem with the import of the 200mW transmitter from Hong-Kong to Austria. But some phone calls and some letters later it was ok 😉 (first i had to pay way too much tax but i received the difference back)

The Video quality of the iTheatre is not enough to fly the MikroKopter only by the video signal. So i have to buy new Video glasses (goggles) with a minimum resolution of 640×480. Otherwise it’s not possible to see details on the screen.

Ok, and here are now some nice pictures of the actual Setup (Transmitter and Receiver):

Top View CMOS camera GPS, COMPASS, FlightCtrl, BL-Ctrl 2.4GHz 200mW tansmitter Groundstation with receiver, LiPo, … 2.4GHz 8dBi patch antenna

The Groundstation has a 3s LiPo to power the receiver and a second (original iTheatre) LiPo to power the Video Glasses.

btw, the antenna (vertical polarized) has an emission angle of 75° horizontal, 65° vertical.

emission angle

BL-Ctrl change of FETs

January 29th, 2008 by Speedy 6 comments »

A lot of people in the MikroKopter-Forum think, that it is difficult to change the FETs of the BL-Ctrl. But that isn’t so. All you need is a soldering iron with enough power. You can even use a “really brutal” 230V device without any regulation. Then you have to heat up the FET and remove it from the PCB.

To solder a new FET to the PCB, do the same in the other direction. Really simple – see my short movie:

Google - Link: Change of BL-Ctrl FETs

(Strangers…) MikroKopter in the night….

January 28th, 2008 by Speedy 2 comments »

He ho guys!

Some of you already thought, that i stopped my work with the MikroKopter. But that is not the case.
During the last weeks i build up a second (new/old) MikroKopter with my 1.0 FlightCtrl. Also the “old” handmade 1.0 BL-Ctrl got an update with the Vishay FETs (P-Channel: SUD50P04-09L and N-Channel: SUD50N06-09L). The BL-Ctrl 1.0 was updated to a BL-Ctrl 1.1 – that only needed a small hardware change (the address coding). This can be seen in detail on the following picture:


The technical data of the “very-low-cost, very-low-weight and much fun to play with – MikroKopter”:

  • Axis centre distance: 40 cm
  • Standard Alu-Frame with Centerplates
  • FlightCtrl 1.0 (not modified to 1.1 yet – but not really necessary)
  • BL-Ctrl 1.0 PCB with modified hardware, so that hardware adressing is possible like BL-Ctrl 1.1
  • “Schwimmnudel” PE landing pads (really low cost and low weight)
  • E-Sky motors – out of the MK-Shop (they are much louder than the Roxxy, but also much cheaper and for the first (or in my case the second) MikroKopter completely ok.
  • LEDs to be able to fly in the night/evening. (got from my Company, where I’m currently working: LED P510/511) They can be directly driven by the LiPo (11.7 Volts)
  • Standard 3S1P Lipo
  • ACT receiver (also out of the MikroKopter Shop)

And now some additional pictures of my second “Training-Kopter” with LEDs :

lighting_mk_1.jpg lighting_mk_2.jpg lighting_mk_3.jpg lighting_mk_4.jpg lighting_mk_5.jpg

Also i received a new Video-Transmitter from Hong-Kong. But more details later…

Wireless Videoglasses (2.4GHz)

December 10th, 2007 by Speedy 4 comments »

Hi guys!

I mentioned in my site statistics, that a lot of people use the google translator to see my site in english. So i decided to continue my Blog in English. I hope that is easier for the guys abroad 😉 Also i think it should be no problem for the others to read my blog in english. – And if so, it’s a good practice for them to learn english.

Back to the topic of this blog-entry.

As i have written in my last entry, i will explain how i realized the live video from the Pentax A30 to my iTheatre Video Glasses.

My equipment:

20071209_wireless_2_4ghz_video_glasses_002.jpg 20071209_wireless_2_4ghz_video_glasses_003.jpg 20071209_wireless_2_4ghz_video_glasses_005.jpg 20071209_wireless_2_4ghz_video_glasses_006.jpg 20071209_wireless_2_4ghz_video_glasses_009.jpg 20071209_wireless_2_4ghz_video_glasses_011.jpg
Video glasses (iTheatre), Power supply / Akku of the Videoglasses, 2.4 GHz receiver, 2.4 GHz CMOS camera back + front
How to disassemble the camera (and what is inside):

20071209_wireless_2_4ghz_video_glasses_012.jpg 20071209_wireless_2_4ghz_video_glasses_013.jpg 20071209_wireless_2_4ghz_video_glasses_015.jpg 20071209_wireless_2_4ghz_video_glasses_020.jpg

One part of the electronic is for the CMOS – Camera and the microphone pre-amlifier. And the other part is the transmitter (2.4 GHz Mono-Sound + PAL Video)

20071209_wireless_2_4ghz_video_glasses_022.jpg 20071209_wireless_2_4ghz_video_glasses_023.jpg 20071209_wireless_2_4ghz_video_glasses_046.jpg 20071209_wireless_2_4ghz_video_glasses_024.jpg

» Read more: Wireless Videoglasses (2.4GHz)

Mikrokopter mit Videobrille (iTheatre)

December 6th, 2007 by Speedy No comments »

Hallo MK-Freunde 😉

Obwohl ich in den letzen Wochen MASSIVEN Zeitmangel hatte (Freizeit ist im Moment ein Luxusgut und wird zum Skifahren verbaucht) habe ich es doch geschafft, mir eine Videobrille zu besorgen und die ersten Fotos aus der Luft zu schießen.

Hier das Ergebnis:


Wie man sieht, mein nettes kleines Heimatdörfchen Stallehr. Leider etwas verschwommen, wird aber wohl an den Fokuseinstellungen gelegen haben, da dieser nicht auf “unendlich” eingestellt war. Das Foto wurde mit einer Pentax A30 über Fernauslöser gemacht und nachträglich auf 1024 x 768px herunterskaliert (aufgrund der Unschärfe). Ansonsten wurde es in keinster Weise nachbearbeitet.

Als nächstes steht jetzt noch die Live-Videoverbindung vom Kopter zur Videobrille (dem Piloten) an. Dafür werde ich eine kleine Minikamera mit Funkmodul auseinanderbauen und dei A30 von Pentax dranstöpseln. Näheres dazu gibt’s im nächsten Blogbeitrag.

Bei der Videobrille handelt es sich um eine iTheatre:


MKIII – final

November 19th, 2007 by Speedy 1 comment »


Nein, Weihnachten steht noch nicht vor der Tür, aber mein MKIII 😉

Nach ein paar Bastelstunden ist der MKIII nun endlich fertig. Leider gibts auch gleich eine schlechte Neuigkeit: Das Gewicht ist viel zu groß!

Mit einem 3200mAh Lipo, Kamerahalterung, GPS, Bluetooth, Empänger, Elektronik, Motoren, Acrylhalbkugel, … hat das ganze Teil ~1300 Gramm. Bei einem Flugtest bei eisiger Kälte und BL-1.0 Reglern war das Teil schon TOTALst am Ende.

Was lernen wir daraus: ABSPECKEN & AUFRÜSTEN. Auch dem MK tut Übergewicht nicht gut. Außerdem werde ich ihm gleich mal die BL 1.1 Regler verpassen. (Hardware ist ja schon vorhanden *freu*)

Bevor ich also die Baupläne hier veröffentliche, werde ich jetzt einach mal ein paar Fotos ins Netz stellen. (Baupläne gibt’s erst, wenn er ein vernünftiges Gewicht hat. – Wer sie trotzdem gerne hätte, kann sich ja per e-mail melden)
Zuerst gings an die “Kuppel”. Diese besteht aus 2 Acrylglashalbschalen (gibt’s im Baumarkt oder im Bastelgeschäft). Eine Hälfte teilt man bei ~2cm (z.B. mit einem Dremel) und klebt diese dann “verkehrt” auf die Stabilisierungsplatte. Ich habe dazu einen Spezial-UHU Kartkunststoffkleber verwendet, hält bombenfest in 5 Minuten.

mkiii_detail_001.jpg mkiii_detail_002.jpg mkiii_detail_003.jpg mkiii_detail_004.jpg mkiii_detail_005.jpg mkiii_detail_006.jpg

Kurze Bilderserie über die schwenkbare Kamerahalterung (gesteuert mit Tilt-Ausgleichs-Kameraservo). (Bilder erklären sich von selbst)

mkiii_detail_007.jpg mkiii_detail_008.jpg mkiii_detail_009.jpg mkiii_detail_010.jpg mkiii_detail_011.jpg mkiii_detail_012.jpg mkiii_detail_013.jpg mkiii_detail_014.jpg mkiii_detail_015.jpg mkiii_detail_016.jpg mkiii_detail_017.jpg

Und schließlich noch ein paar Fotos vom Monsterschwergewicht:

mkiii_detail_018.jpg mkiii_detail_019.jpg mkiii_detail_020.jpg mkiii_detail_021.jpg

Jetzt muss der MKIII “nur noch” auf Diät, ein paar Kilo abspecken und an Power zulegen. (anderes Landegestell, ev. nur eine Stabilisierungsplatte, kleinerer uns somit leichterer Lipo-Akku – jedoch kürzere Einsatzzeit, neue BL-Regler)

Ich halte euch auf dem laufenden 😉