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 * For software development for the new AtMega1284 processor and you need the [[http://downloads.sourceforge.net/winavr/WinAVR-20060421-install.exe?use_mirror=mesh|WinAVR-20060421 Compiler]] and a [[http://www.mikrokopter.de/files/WinAVR-20060421-patch_MikroKopter.zip|special Patch from H&I]].  * For software development for the new AtMega1284 processor and you need the [[http://downloads.sourceforge.net/winavr/WinAVR-20060421-install.exe?use_mirror=mesh|WinAVR-20060421 Compiler]] and a [[http://mikrocontroller.com/files/WinAVR-20060421-patch_MikroKopter.zip|special Patch from H&I]].

FlightCtrl V2.1


See also: FlightCtrl overview

Flight Ctrl V2.1

Shoplink

Top Side

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=76296&g2_serialNumber=2

Molex-Connector to connect to power distribution board

1 - Molex Connector

  • Connections from top to bottom:
    1 - Ground (GND FC and Buzzer)
    2 - + Buzzer
    3 - I2C Bus (D)
    4 - I2C Bus (C)
    5 - +12V

http://gallery.mikrokopter.de/main.php/v/tech/FC21_+an_Verteiler.jpg.html

If you are using this new connection you will be unable to install a power switch for your Flight Controller. The Mikrokopter will then get turned on by connecting your Lipo battery. (All MK with more than 4 engines do that anyways).

Bottom Side

FC2-1.jpg

1 - 10pin connector for MK-USB or NaviCtrl connection
2 - Pressure Sensor (cut out of sensor connector points to the right)
3 - 6pin connector for servo 2 and Servo 3
4 - 6pin connector for servo 4 and servo 5
5 - DC/DC voltage regulator 5v Recom for Flight Controller
6 - DC/DC voltage regulator 5v Recom for servos
7 - 6pin connector for NaviCtrl
8 - 6pin connector for servo 1 and switchable J16/J17 connectors
9 - I2C connector (C/D) for BL Controllers
10 - JET (If you are using the Jeti Satellite receiver you will have to bridge these two connectors)
11 - 5pin connector (5V, GND, 3,3V, RX,TX)

  • Connection for Jeti receiver:

    • Connect PPM cable to #13, bridge the 2 connectors on #10 and connect RX

    Connection for Spektrum Satellite::

    • Connect the orange Receiver cable on 3,3V, black to G and gray to RX

12 - connection for the buzzer (BUZ-/BUZ+)
13 - Connection for PPM receiver (GN-brown, +5V-red, PPM-orange)
14 - Ground (GND) connection for the Flight Controller
15 - Positive (+) connection for the Flight Controller (if a power switch is being used)
16 - Positive (+) connection for the Flight Controller (without a power switch)

Flight Ctrl. 2.1

The FlightCtrl is already fitted with all needed components.

http://gallery.mikrokopter.de/main.php/v/tech/FC21-best__ckt1.jpg.html http://gallery.mikrokopter.de/main.php/v/tech/FC21-best__ckt-2.jpg.html

{i} The FCV2.1 can be connected to the powerboard via the molex cable.

When using the Molexkabel between FlightCtrl and powerboard, you don't have to solder the I2C bus, the buzzer and the power cable to the FlightCtrl.
Only the power cable for the receiver still has to be soldered to the FlightCtrl.
The buzzer is connected directly to the appropriate solder points of the powerboard (Buzzer / -).
The I2C-bus and the voltage supply are provided from the power distribution via the Molex.
Alternatively, the FC V2.1 can be connected with individual cable to the power distributor. But then you don't have to use the Molexcable.

/!\ When mounting the FlightCtrl, the printed arrow shows to the rigger No.1 (red rigger). The PCB populated side facing up.

Connections

http://gallery.mikrokopter.de/main.php/v/tech/FC_ME_Connections.gif.html

(FC2.1 and FC2.0 are identical except the new Molex Connector)

Connectors SV1

http://gallery.mikrokopter.de/main.php/v/uploads/SV1.GIF.html

Connectors SV2

Upper Row (switchable outputs)

Pin1: 100mA switchable output with NON Open Collector for LED's, Programmable with MK Koptertool with J16.

Pin3: +5 Volt

Pin5: 100mA switchable output with NON Open Collector for LED's, Programmable with MK Koptertool with J17.

Lower row: Nick-Servo Output

Pin2: Servo 1 output (for Nick-Servo camera stabilization)(adjustable via MK Koptertool)

Pin4: +5V

Pin6: GND

Attention: the servo outputs get activated after the calibration of the gyros. Push the throttle lever in the upper left corner until you hear the buzzer and the green LED turns off.

Connectors SV3

Upper row: Servo 3

Pin1: Servo 3 output

Pin3: +5V

Pin5: GND

Lower Row: Roll-Servo Output

Pin2: Servo 2 Output (Setting in Koptertool)

Pin4: +5V

Pin6: GND

Connectors SV4

Upper row: Servo 5

Pin1: Servo 5 output

Pin3: +5V

Pin5: GND

Lower Row: Servo 4

Pin2: Servo 4 output

Pin4: +5V

Pin6: GND

Receiver Connection

Please note, that you have to choose the right receiver in the settings under "Channels".

Standard PPM-Receiver

Examples:

Connection:

PPM - sum signal

Pad

Function

Cable color

GN

GND/Minus

Black

+5

Plus 5V

Red

PPM

data connection

Orange

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=105419&g2_serialNumber=1

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=105425&g2_serialNumber=1

Click to enlarge the image

Spektrum Satellite Receiver

The 3,3V power connection for the satellite receiver is on the bottom side of the Flight Controller.

Connection:

2nd serial port connection

Pad

Function

Cable color

G

GND/Minus

Black

3V

Plus 3V

Orange

RX

data connection

Gray

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=105445&g2_serialNumber=1

Click to enlarge the image

Also see: Spektrum

Jeti Satellite Receiver

The external diode is already integrated into the FC2.1 circuit and therefore will not have to get soldered.

Connection:

PPM - sum signal + Telemetry

Pad

Function

Cable color

GN

GND/Minus

Black

+5

Plus 5V

Red

PPM

data connection

Orange

RX

Telemetry connection

User defined

JET

solder bridge for Telemetry

-

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=105435&g2_serialNumber=1

Click to enlarge the image

Also see: JetiDuplex

HoTT Receiver

Since Software version V0.86

The HoTT receiver will also connected on the PPM and RX pads of the FlightCtrl. To send the telemetry a solder bridge on "JET" is needed.
More informations about the HoTT-System you can find here: HoTT

Connection:

PPM - Sum signal + Telemetry

Pad

Function

Cable color

GN

GND/Minus

Black

+5

Plus 5V

Red

PPM

data connection

Orange

RX

Telemetry connection

User defined

JET

solder bridge for Telemetry

-

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=105430&g2_serialNumber=1

Click to enlarge the image

Futaba S.Bus Receiver

Since Software version V0.88

A S.Bus receiver can be connected with a signal-inverter to the FlightCtrl.
The needed Signal-Inverter you can get here: Shoplink

Connection:

2nd serial port connection

Pad

Function

Cable color

5V

Plus 5V

Red

G

GND/Minus

Black

RX

data connection

Orange

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=105440&g2_serialNumber=2

Click to enlarge the image

Wiring Diagram

http://mikrocontroller.com/files/Flight-Ctrl_ME_2_1f.pdf

/!\ The usage of MikroKopter Software is only permitted on original MikroKopter hardware.

Hardware Changes since V2.00

  • new controller with double the flash memory (ATMEGA1284P)
  • Molex-connector for easy power distribution board connection
  • integrated power supply for Spektrum Satellite receiver
  • JET connector bridge for easy usage for JETI down-link
  • Adjustable resistor for pressure sensor to accommodate 2000-3000 meters in elevation depending on weather
  • resistor adjustment for I2C Pull-Ups.
  • Protection diode for Buzzer
  • new black color

What's included and what has changed compared with V2.0

  • Pressure Sensor MPX4115A is included
  • 2 power regulators (recom or similar) are included to supply your flight controller and servos with power
  • power switch is NOT includes and has to get ordered separately

Other

  • the boot loader for FC2.1 is not public domain and can not be read out thanks to our good friends in china.
  • a AtMega1284 Prozessor with programmed bootloader is available here

  • under no circumstances is it allowed to program or delete the ISP with Atmel programmers

Software Development

Upgrade for 5S and 6S LiPo

Should a 5S or 6S Lipo be used instead of a 4S Lipo, the Recoms regulator must be replaced with an appropriate Traco DC/DC regulator.
Furthermore, all electrolytic capacitors in the input area should be exchanged with 25V-rated types.
All reconstructions of the FlightCtrl board are taken at your own risk.

  • The voltage regulator must be replaced with one of a correspondingly high input voltage range (e.g. Traco TSR1-2450) as the Recoms only permits up to 18V input voltage. Costs about €9.

  • All SMD capacitors in the input area should be rated to 25V. However, the Kerko - subject to availability upon placer - also only 16V. (yes, the FC is also sold as a max. 4s in the shop) If in doubt, replace.
  • Exchange the large radial leaded capacitor "C55" for a 330μF/25V type.