Výhody

V porovnaní s QuadKopterom s 4 motormi MK-Hexa prináša tieto výhody:

• vyššia nosnost o (najviac) 0,8kg
• napriek vyššej nosnosti nie sú použité väcšie (nebezpecnejšie) vrtule ani väcšie motory

Každý motor HexaKoptera je ovládaný samostatným regulátorom. Použité sú jednosmerné bezkomutátorové (BLDC) motory a regulátory.

MK-Hexa video

Pohon

• 6 motorov MK2832/35

• 6 10-palcových vrtulí EPP1045
• Lipo 4S/3300mAh

Návod na stavbu

Ako poskladat MK-Hexa? Pár rád, ktoré Vám môžu pomôct pri stavbe.

Všetky obrázky sú klikacie - zobrazí sa obrázok vo väcšom rozlíšení

Rám

Rám tvoria:

• Hliníkové ramená
• Stredové dosky
• Distancné stlpiky

Orientácia stredových dosiek

Stredové dosky sú oznacené šípkou, ktorá je vždy na vrchnej strane dosky a smeruje dopredu.

Ramená sú medzi dvoma stredovými doskami - horná a spodná.

Montáž 10mm a 15mm distancných stlpikov na hornú stredovú dosku

Na tieto plastové 10mm distancné stlpiky sa neskôr upevnia regulátory s napájacou doskou. Šest stlpikov priskrutkujte na hornú stranu stredovej dosky plastovými skrutkami M3x8.

Dva gumenné distancné stlpiky sa upevnujú kovovými skrutkami M3x3mm.

Distancné stlpiky sa montujú na hornú stredovú dosku a smerujú hore.

Montáž 15mm distancných stlpikov na spodnú stredovú dosku

Na tieto 4 plastové distancné stlpiky sa neskôr môže namontovat držiak kamery/fotoaparátu. Priskrutkujte ich taktiež plastovými skrutkami M3x8.

Distancné stlpiky sa montujú na spodnú stredpvú dosku a smerujú dole.

Montáž motorov

Motory sa upevnujú na ramená dvoma kovovými skrutkami (sú v sácku spolu s unášacom vrtule). Použité sú otvory s roztecou 19mm. Káble z motorov musia smerovat do stredu budúceho HexaKoptera.

Prevlecenie káblov pre motory, LEDky a bzuciak

Tri káble od motora treba prevliect cez rameno.

Na zadnom ramene prevlecte 0,5mm cierny a cervený káblik pre bzuciak.

Na prednom cervenom ramene a dvoch zadných ramenách prevlecte 0,5mm cervený a cierny káblik pre napájanie LED pásikov.

Tipy:

• Zlepte alebo zospájkujte dohromady káble pred prevlecením cez otvory remena.

• Cez bocný otvor pri strede budúceho HexaKoptera prevlecte drôt, ktorým prevlecte káble cez rameno.

Pripojenie káblov na bzuciak

Cez zadné rameno HexaKoptera ide 0,5mm cervený a cierny káblik pre bzuciak.

• cervený káblik pripojte na pin bzuciaka oznacený (+)
• cierny káblik prispájkujte na neoznacený pin bzuciaka

Montáž a pripojenie LED pásikov

LED pásiky sú samolepiace - prilepte ich na ramená HexaKoptera. Prispájkujte na ne cervený a cierny káblik prevlecený cez rameno rámu. U RGB LED pásikoch vieme vybrat farbu pripojením cierneho káblika na pin R, G, B, prípadne na viac pinov súcasne. Cervený káblik prispájkujte na pin (+) LED pásika. Po prispájkovaní ochránite LED pásik transparentnou zmrštovackou.

Montáž ramien

Šest ramien HexaKoptera namontujeme medzi hornú a spodnú stredovú dosku. Cervené rameno smeruje dopredu (šípka na stredovej doske) Na montáž použite dvanást kovových skrutiek M3x16 so samoistnými maticami na koncoch ramien. Plastovými skrutkami M3x16 a plastovými maticami po obvode stredovej dosky zafixujte ramená. Hlavy skrutiek na spodnej strane, matice na hornej.

Namiesto dvoch matíc na hornej strane použite dalšie dva gumenné 15mm distancné stlpiky. Flight-Ctrl V2.0 M dosku neskôr namontujeme na štyri gumenné distancné stlpiky.

Montáž držiakov kabíny

Kabínu (kryt elektroniky) neskôr upevníme v štyroch plastových držiakoch. Zároven vymedzujú medzeru medzi stredovými doskami.

Držiaky upevnite plastovými skrutkami M3x16 a maticami. Hlavy skrutiek sú zospodu, matice zhora.

Zrovnanie káblov

Káble prevlecieme cez otvory v stredových doskách ako na obrázku:

Velcro pásy

Sucháce použijeme na upevnenie akumulátora (resp. akumulátorov) v HexaKopteri.

Prevlecieme ich cez pozdlžne otvory.

Elektronika

The electronics and algorithms, running inside the microcontrollers, are the central component of a multicopter. Only through their sensors and fast adaptive controll flying is made possible.

It basically consits of:

• FlightControl -> "main cotroller with sensors" for the calculation of the copter's state

• BL-Ctrl -> fast drive and control of the brushless motors

• RC-receiver -> Interface between Transmitter (pilot) and FlightControl.

• LiPo-battery -> Powersupply

FlightCtrl

There still are some components which have to be attatched to the preassembled PCBs. In general, the preassembled version can be identified by its (red) colour.

"FC" is the abbreviation for FlightControl.

A circuit board (PCB) before and after assmbly of all the final parts:

A circuit board (PCB) before and after assmbly of all the final parts:

The way and heading for the mounting of the FC is predefined:

• The arrow next to the switch has to point in direction of the front rigger (BL #1)
• horizontally
• uC (microcontroller) facing up!

Video about the assembly of the final parts (21,3MB)

Further information about the FC ME (MemsEdition)

BL-controller

The BL-Ctrl was designed especially for Mikrokopter.

Compared to common brushless controllers, the BL-Ctrl provides a fast data bus (i2c) to the FC and switches very fast to new target values. Common brushless controllers cannot be used.

The BL-Ctrls are adressed from 1-4(5+6) via jumpers (soldered).

Adress selection

Each motor requires a defined adress. That's why adresses from 1-6 are assigned.

With a BL-Ctrl V1.2, motor adresses can be set by a jumper (soldered).

rules:

General Infos about BL-Ctrl

BL-Ctrl V1.2

Adresses 5-6

Since the HexaKopter needs adresses up to 6, BL-Ctrls 5-6 need a special setup. In the set (from the shop), BL-Ctrls with special software are marked specially.

These BL-Ctrls are adressed by the following:

Power distribution board

The Hexa distributor supllies all 6 BL-Ctrls with power and connects the i2c bus for communication.

The BL-controllers are mounted in the fitted slots and connected with cable bridges.

The TOP ist marked by a + (plus).

Arrangement of the BL-Ctrls

The BL-Ctrls are arranged as shown here.

The microcontrollers of the Bl_Ctrl are on the TOP

Here you already see the colors of the motor cables.

If the holes of the riggers are on the right side of the rigers, please use this connection: old connection

Solder Elkos on BL-Ctrl 1,3,5

The BL-Ctrls are connected via the wires of the Elko (capacitors). The Elkos are assembled from the top of teh distribution board.

There should be 2mm of air unter the Elkos (so the wire-ends are not touching the caps of the Elkos).

The Elko-wires are to be bent over and put (and soldered) through the + and - solder-pads of the BL-Ctrls.

MINUS (marked on each Elko) is on the INNER side (for inner Elkos) and on the OUTER side for outer Elkos.

a lot oh heat has to be used on the distribution board to make a perfect connection

Connect the data bus (I2C) to BL-Ctrl 1,3,5

The i2c bus (C & D) is connected via 2 silver wire-bridges.

The silver wire is stuck in the holes of the distribution board and bent over. After that teh ends of the wires are soldered to the "C" and "D" connection pads of the BL-Ctrls.

Solder Elkos on BL-Ctrl 2,4,6

For BL-Ctrl the cabled are bended 90°

Connect the data bus (I2C) to BL-Ctrl 2,4,6

The i2c bus (C & D) is connected via 2 silver wire-bridges.

Assembly of the bridges

8 bridges have to be assembled on the distribution board.

The distribution board shoul lokk like this now:

Connection wires of the power distribution board

The following wires are to be connected to the distributor:

• Battery plus and minus (2,5mm2 + = red and - = black)
• I2C to FC: C and D (0,5mm2 C = red and D = black)
• Supply FC (0,5mm2 + = red and - = black)

Supply of the FlightCtrl

The power supply for the FC comes from the small + and - pads at the upper side of the power distribution board.

about 15cm 2,5mm2

Battery cable: Cable 15cm 2,5mm2

CAUTION: Ends have to be well-tinned so no tiny copper wires can stick off the strand.

attaching the electronic to the frame

The BL-Ctrls are attached to the 10mm bolts

Motor is front

connecting the LED supply to the distribution board

Front LEDs

Back LEDs

connecting he motor ales to the BL-Ctrls

The motor cables are connected to the three pady of the BL-Ctrls.

The order is as follows:

• connect A = grey, B = blue, C = black on odd motor adresses (1,3,5) clockwise rotation

• connect A = blue, B = grey, C = black on even motor adresses (2,4,6) anticlockwise direction

If you don't use the standart motors, the order doesn't matter for now and might have to be changed later on during the motor test phase.

Possible LED-Driving circuit

With the HExa power distribution boardit is possible to realize the driving circuit for LEDs

Description here

Connecting the FlightCtrl

Supply

Plus can be taken from behind the switch because the switch does not have to be assembled on the Okto. (it would only switch on/off the FC)

Later - the Hexa will be switched on/off just by (un-)plugging the battery

Wires should be twisted a little to eliminate compass-errors comping from interfering fields.

Connectng the buzzer

Mounting the FC

The FC is mounted in the way that the small arrow points to the front. plastic nuts can be screwed ontop of the rubber damper-threads optionally to place the FC a little higher.

The small arrow shows the front.

Connection I2C to the FC

• C = red
• D = black

Attatchment of the RC-receiver

Here a spectrum receiver

Instuction of using and pairing the Spectrum receiver

After binding the receiver, the cable has to be cut into two pieces. More of this cables are available in the shop, if needed

Now the entire electronics should look like this:

Battery cable

Can be mounted like shown here:

The battery plug (deans male) is soldered to the wires (plus is marked on the plug) and the wires are covered again with shrinking tube for protection against shortage.

The battery might have to be (re-)configured with a female Deans-plug.

Here again - tin well for protection against short circuits.

The battry plugs are tightened with zip-ties.

DO NOT shorten the battery contacts!

Final mounting

Installing the FlexLanders (XL)

The landing gear is attatched by 20mm Screws (steel)

Installing the plate for a camera-mount

10mm-spacers are mounted under the lowest bolts. The pastic windinging can be shortened by a cutter for this.

Another option would be to use 8mm vibration-dampers (the threads of the 15mm spacers might have to be shortened first)

Installing the battery

The Battery is placed under the camera-plate and secured with Velcro strips

Mounting the hub

• The holes for the riggers have to be cut into the hub.
• The hub can be painted from the inside.

The hub is attached via some metal screws

Starting Up

Prior to flight the Flight-Ctrl has to be set up as "Octo" - otherwise only 4 motors would turn on. To do that, the ALT-Key has to be held while clicking on "Settings" in the Mikrokopter-Tool. Then, the Mixer-Configuration "HEXA.mkm" can be loaded

Informations regarding the mixer

Flight and Handling

handling - turning on - calibration etc.

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