MikroKopter

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See also: en/MK-Okto

OBS!!!! Översättning pågår!!!!! www.mikrokopter.nu öppnar inom kort

en/MK-Okto

MikroKopter – Assembly instructions

How do you convert a heap of parts into a flying Mikrokopter? Here are a few tips which may be useful during the build.

Click on any of the pictures for a larger view.

http://gallery.mikrokopter.de/main.php/v/tech/MkKomplettset.jpg.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8420_MK_Fertig.JPG.html

MikroKopter Before and After

This is a little video of the building procedure incl. Maiden Flight

The Frame

The frame gives the Mikrokopter its core structure.

It must fulfil the following characteristics:

http://gallery.mikrokopter.de/main.php/v/tech/MK40Set_001.JPG.html

This is a frame-set for a standard Mikrokopter with 40cm motor-shaft seperation. The weight of the frame (depending on type and number of bolts used) is aprox. 100-110g.

The motor-shaft separation refers to the distance of one motor shaft diagonally to the next along the frame arms. The distance of one shaft to the next adjacent one is therefore 40 / 1.4 = 28.5cm.

Painting the frame

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8276_lack1.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8279_lack2.JPG.html

The Frame should be painted such that the leading arm can be easily distinguished from the others. Colouring this one red generally works well.

Prior to painting, the frame arms should be degreased and sanded. This way the colour is held better and the leading colour becomes more distinguishable.

Alternatively it is also possible to cover the arms in coloured shrink tubing or have the arms anodised

Frame assembly

The frame from above:

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8288_rahmen.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8283_rahmen.JPG.html

The frame from below:

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8287_rahmen.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8285_rahmen.JPG.html

Things to note:

Video of frame assembly (8,8MB)

Electronics

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8302_Set.JPG.html

It consists of the following:

FlightCtrl

On the preassmebled FlightCtrl, various "through-hole" type components have to be soldered on for completion. Preassembled boards can generally be identified by the red colour.

The term FlightCtrl is often shortened to "FC".

Board before and after the assembly of the remaining through hole parts:

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8443_FC_Parts.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8456_FC.JPG.html

The mounting direction of the FC is fundamental for opperation:

Video of assembly of the remaining parts (21.3MB)

Further information for the assembly of the FC

BL-Ctrl

The Bl-Ctrl has been specially developed for quadrocopters with Bl Motors.

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8293_Regler.JPG.html

Compared with typical Brushless controllers, it has a fast data bus to the FC (I2C) which results in a spontaneous regulation of motor setpoints. Normal Brushless controllers can not be used.

The Bl-Ctrl’s are designated an address of 1-4 via a solder jumper.

Address choice

On the Bl-Ctrl V1.2, motor addresses are set using a solder jumper on the board.

BL-Ctrl_V1.2/BL-Ctrl_adr.jpg

They are set in the following way:

Address (Motor)

1-2

2-3

1 (front)

open

open

2 (back)

open

closed

3 (right)

closed

open

4 (left)

closed

closed

BL-Ctrl_V1.2/Bl-Ctrl_v1_1.jpg http://gallery.mikrokopter.de/main.php/v/tech/CIMG8314_Regler_DC.JPG.html

General info for the BL-Ctrl

BL-Ctrl V1.2

NaviCtrl

NaviCtrl

Wiring

This Overview diagram shows amongst other things the wiring, addresses and positions of the Motor Controllers aswell as the rotational direction of the propellers: http:/mc.mikrocontroller.com/images/kopter/verdrahtung1.gif

Wiring

Wire Tree

Start by preparing the DC cables for the DC power supply.

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8310_Kabelbaum.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8316_Regler_DC.JPG.html

The wire tree is prepared using a thick primary wire (approx. 10cm), onto which 4 splitting lines (approx 12cm) are soldered. The joint should be secured with plenty of solder. Following this, use shrink tubing or electrical tape to insulate the joint.

The splitting lines (Plus and Negative) are connected to the four Bl-Ctrl’s.

Things to note:

Motor Lines

The motor lines connect the motor with the output of the Bl Ctrl. The Bl Motors require a so called rotary field. For this reason three lines are required.

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8319_Motorkabel.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8322_MotorKabel_an_Regler.JPG.html

For clarity we use three different colours. The rotary directing of the motors can be changed by switching any two of the three lines. It is therefore not important at this stage in what way these three lines are connected.

The lines should be approx. 22cm long. They will be shortened later.

I2C-Dataline to the Bl Controllers

The I²C Bus provides the communication between the Bl Ctrl’s and the FC.

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8328_I2C.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8330_I2C.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8333_I2C_FC.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8341_Kabel_an_FC.JPG.html

It consists of two signals

It has proven useful to solder and bend the I2C lines as shown in the pictures in order to avoid them tearing off during any mechanical stress.

Attachment of the Receiver to the FC

Connect the small receiver Cable to the FC. On the FC you will have the corresponding colors (Brown/Red/Orange AND GN/+5/PPM)

http://gallery.mikrokopter.de/main.php/v/tech/FCMEEMPF_001.jpg.html

/!\ Attention Spektrum (DX7) Users see more details about the Digital Transmitter Spektrum DX7

Attachement of the supply lines to the FC

The Wire Tree to the Bl Ctrl’s and the Power line is now attached to the FC.

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8339_DC_An_FC.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8353_Versorgungskabel.JPG.html

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8362_BattKabel.jpg.html http://gallery.mikrokopter.de/main.php/v/tech/fc_1_3_unten2_001.jpg.html

The Battery cable utilises the male battery connector(Description: DEANS ) (is labled with + and - ) and an approx. 15cm long connection line. The contacts on the battery connector must be protected against electrical shorts using shrink tubing.

The Plus of the battery lines is soldered onto the Pad at the switch (towards middle of the board). The Plus of the wire tree is soldered onto the pad on the middle of the switch connections.

The two Minus lines are soldered onto the solder pad facing towards the near corner of the switch.

Attachement of Lighting systems

At least the leading frame arm should be clearly marked for orientation when flying. At long distance this can be nicely achieved using a lighting system.

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8361_LED_Leiste.JPG.html

The light strips need to be supplied by a 12V source. The easiest way to achieve this is to connect them via a thin line to the power supply of the front BL Ctrl (Number 1). In this case a 4-5cm line length is sufficient.

Later on, the lighting, together with the frame arm needs to be covered with shrink tubing to avoid electrical shorts.

Attachement of the the Buzzer

Initially the buzzer used to be located directly on the FC. However, due to its strong magnetic field we will isolate is from the start by placing it at the end of one of the frame arms.

Otherwise, the buzzer will interfere with the electronic compass (MK3Mag), which may be added as a later option.

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8362_Summerkabel.jpg.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8350_Summerkabel.jpg.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8354_SummerKabel_001.JPG.html

Important: The Plus of the buzzer (marked) must be connected to the + on the FC board

Instalment of electronics into the frame

The entire electronics should now look like this:

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8362_Verkabelung_Vor_Einbau.JPG.html

Dry test of the electronics

The basic functions of the electronics can already be tested at this stage. There is no need to connect motors for this.

Procedure:

Control:

Video of a "Dry test" (5,6MB)

Assignment of the Bl Ctrl’s

The addressed BL-Ctrl’s must now be placed as follows:

Motor

Position

#1

front

#2

back

#3

right

#4

left

Rule of Thumb: Controller #3 at 3 o’clock
The BL Ctrl’s can be threaded through the middle of the center plates (the corner bolts may have to be loosened for this). Following this the motor cables should run outwards and the supply lines towards the center.

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8430_ElektronikOhneFC.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8373_Kabelbinder.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8372_Einbau_BL.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8375_Kabel_In_Rahmen.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8381_HeckAusleger.JPG.html

Video of instalment (14,5MB)

Video of shrink tube insulating of the Bl Ctrl’s (5MB)

Instalment of Flight-Ctrl

A directional arrow is located in a corner on the top side of the Flight Control. It is important that this arrow MUST point forward i.e. towards motor 1!

The arrow is marked by a red square in the following illustration: http://gallery.mikrokopter.de/main.php/v/tech/Flight-Ctrl_Bestueckung_oben_arrow.png.html

Instalment and mounting of Motors and Propellers

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8428_AuslegerVorn.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8429_AuslegerHEck.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8427_MotorAnAusleger_001.JPG.html

The motor lines should be encased in heatshrink (or at least secured well using cable ties). On the rear arm, the buzzer may be attached at the same time using the heat shrink.

The colour of the frame arms will last longer if they are encased in shrink tubing.

The Motors include connectors.

The use of these connectors has the advantage that the motors can (if required) be quickly exchanged or rotary directions changed by switching two of the three lines.

Mounting of the Battery

http://gallery.mikrokopter.de/main.php/v/tech/CIMG8435_AkkuDetail.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8433_AkkuKlett.JPG.html http://gallery.mikrokopter.de/main.php/v/tech/CIMG8425_vonUnten_001.JPG.html

In some cases a female Deans-Connector needs to be attached to the Battery. The plug is labled with Plus and Minus.

Again, ensure that soldered points are well tinned and protected against electrical shorts using shrink tubing.

/!\ Under no circumstances short circuit the Battery Lines!

The Battery is secured using two double sided hook and loop (Velcro) tapes(Photo). The Hook and Loop bands should be attached to the centre of the frame using cable ties.

Tip: The Battery can be mounted more securely by sticking Velcro tape onto it.

Opperation and Flying

Instructions – switching on - calibrating etc

It is defiantly worth taking a look at the FlugSchule (Flight School).

Video- Flight School by Robert-t

/!\ See also the Safety instructions

{i} Under constructions: Quite a few more things to be added here


MikroKopter: se/montering (zuletzt geändert am 18.12.2014 13:31 durch LotharF)