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To control a MikroKopter you need to have a transmitter with a receiver. With that equipment the control- and switch commands will be transfered to the Kopter.
It doesn't matter if the transmitter/receiver is running on 35MHz, 2.4 GHz or a different frequence.

Here you can see how to use the control- and switch commands: Operation

Over the FlightCtrl you can use a maximum of 16 Channels. Over the KopterTool you are able to assign a function to each channel.


If you use a Graupner HoTT or Jeti transmitter, you can find here some informations and Modell memorys for this transmitters:

en/HoTT en/Jeti


In general you can use any transmitter with more than four channels and an appropriate receiver to control your Kopter.
The control of the Kopter will be done over the two control-sticks. With the additional buttons, switches and potis at your transmitter you can use more functions of your Kopter.
How many of these additional switches, buttons and knobs can be used depends on the number of channels which provides the used transmitter.

The first four channels are been used for the control. Each channel more can be assigned individually to a switch, button or a poti. How that has to be done is described in the instruction manual of the transmitter.

A listing of the possible functions of the MikroKopters with all the switches, buttons and potis can be found here: "How many channels".

Tip 1

Each transmitter usually has got more model memory in the settings and assigned channels can be saved.
Those model memories can be saved in your transmitter as "Heli" or "X-Wing".

Even if the MikroKopter is a "Kopter" you should not use Heli model in your model memory!
Here you could use mixer which negatively affect the functions of the Kopter.

For that reason the MikroKopter should be saved as X-Wing.

Tip 2
The control-stick for the function "Throttle" should be reworked to "non-neutralizing".
Here you need to open your transmitter carefully and remove or deactivate a spring at the appropriate control-stick.
Further information about the rebuild you will find in the instruction manual of the transmitter.


The reiceiver will be connected to the FlightCtrl (Link). Very important is here that the receiver delivers a PPM-Sum signal.
Here all Servo-signals are merged together to a single output. A regular receiver with only servo outputs cannot be used!

Appropriate receiver you can find i.e. here: Shoplink

Tipp: Some receiver you can switch to a PPM-Sum signal. How that works is described in the appropriate instruction manual of the receiver.

If there is no matching receiver with PPM-Sum signal for the used transmitter a converter can also be used. This modul converts the servo outputs into a sum-signal.
That converter is i.e.: QuadroPPM12

An exeption comes with the brand Spektrum. Here you can hook up to the Spektrum-Receiver with regular servo-outputs a small "Satellite-Receiver".
A those bound "Satellite-Receiver" you can connect to the FlightCtrl instead of a receiver with PPM-Sum signal.

How that works is described here: Link


The range (and also the flying height) in which a Mikrokopter can be controlled depends on the used transmitter/receiver.
All functions (with exeption of the WayPoint-Flight) can be used in that range.

Detailed information about the range you can get in thze instruction manual of the used transmitter/receiver. If you cannot find any information you can ask directly at the nabufacturer.

To get a maximum of range the receiver shouldn't be covered with something.

How many channels

For each function used by the MikroKopter you need to set a channel at your transmitter.
The basic function to control the MikroKopters are set on four channels.
All other channels you can use over switches, buttons or potis at your transmitter to control functions on your Kopter.
How many functions you can use depends on the amount of channels on your transmitter.

In the KopterTool you can manage max. 12 channels.

To each "channel" in the KopterTool a function is assigned.
In the settings and under the tab "channels" you can have a look on it (Link):

  • Channel



    Kanal 1



    Kanal 2



    Kanal 3



    Kanal 4



    Kanal 5



    Kanal 6



    Kanal 7



    Kanal 8



    Kanal 9



    Kanal 10



    Kanal 11



    Kanal 12



<!> IMPORTANT: Those "POTI" have nothing to do with a poti (Potentiometer) on the transmitter.


In the KopterTool the channels are not fixed assigned to the "functions". Also, you can switch the channels as you like.
That will be necessary if instead of channel 1 channel 3 is assigned as a "Throttle stick" on your transmitter. In that case you can easily switch channel 1+3 in the KopterTool.


The use of the following channels are examples. You can choose also other channels for the functions.

4 Channels for: Controls

The first four channels are to control the Kopter. Those channels are already pre-set:

  • Channel 1 = Throttle
  • Channel 2 = Roll
  • Channel 3 = Nick
  • Channel 4 = Yaw

The control will be done over the control-sticks at your transmitter:
(Example view)

For the Trim you can "fine-adjust" the control-sticks. This will be necessary if the Kopter drifts to one side during windless weather.

1 channel for: "Altitude Hold"

The Kopter can hold the height automatically over the pressure sensor on the FlightCtrl. Here need to be the function "Height regulator" active in the KopterTool (Link).
To switch the automatic Altitude Hold on and off during a flight this function will be assigned to a channel:

  • Channel 5 = HoldHeight

This channel should be set to a switch on your transmitter:
(Example view)

In the KopterTool is channel 5 the "function" "POTI1" assigned. This "Function" (Poti1) will be entered as a "Nominal Value" under "Height regulation active".

1 channel for: GPS

The GPS-Functions are "PositionHold" and "ComingHome". To use this functionyou need to activate the function "GPS" in the KopterTool (Link).
With "PositionHold" the Kopter keeps the actual position and with "ComingHome" the Kopter flies back automatically to the start-point.
To use this function only one channel is enough. This channel can be set on a 3-way-switch on the transmitter.

  • Channel 6 = GPS

This functions will be switched as follows: OFF - PositionHold - ComingHome
(Example view)

In the KopterTool is channel 6 the "Function" "POTI2" assigned. This "Function" (Poti2) will be entered as "GPS Mode Control" under "GPS".

1 channel for: CareFree

Normally the front of a Kopter points "straight forward" during a flight. With this function it doesn't matter where the front is.
If you switch this function "ON" is always that side of the Kopter the front which points away from me. Describtions of this function you can find here: CareFree

To use those functions you need to set in the KopterTool the function "Carefree Control" to a channel (Link).

  • Channel 7 = CareFree

At your transmitter you need to set this channel to a switch:
(Example view)

In the KopterTool is to channel 7 the "function" "POTI3" assigned. This function (Poti3) will be entered under "Carefree Control".

1 channel for: Motor Safety switch

Another channel you can use for the "Motor Safety switch".
We assume that we need to get the Kopter pretty quick out of high altitude. For that reason that the Kopter is not looking forwards the Kopter should be turned counter-clockwise to the left and to the same time.
That means that you can pull down the throttle-stick completely and Yaw can be pushed to the left.
For that reason that this stick position will be used to switch off the engines the Kopter can come down faster as expected.

With the "Motor Safety switch" you can avoid this. Is the switch "ON" the motors cannot be stopped (or started). Only if the switch is in position "OFF" is that possible again.

  • channel 8 = Motor Safety switch

On your transmitter that channel should be assigned to a switch:
(Example view)

In the KopterTool is to channel 8 the "function" "POTI4" assigned. But - for that function will be not "POTI4" entered. Channel 8 will be entered directly under "Motor Safety switch" instead.

1 channel for: Trigger camera

The FlightCtrl has got two switchable outputs. Over that outputs you can connect i.e. the ShutterCable or the Extension-PCB to trigger a camera.
Those outputs can be set up over the KopterTool: Link

  • Channel 9 = Trigger camera

At your transmitter that channel should be assigned to a botton:
(Example view)

Im KopterTool ist dem Kanal 9 die "Funktion" "POTI5" zugeteilt. Diese "Funktion" (Poti5) wird dann unter dem entsprechenden Ausgang "Ausgang 1/2 Timing" eingetragen.

1 channel for: camera-mount tilt

Is a camera-mount attached to the Kopter it can be alligned automatically over the outputs SV2 and SV3 for Nick and Roll (Link).
In addition you can set the tilt for the camrea-mount over your transmitter.

  • Channel 10 = camera tilt

On your transmitter that channel should be assigned to a potentiometer (Poti):
(Example view)

In the KopterTool is to channel 10 the "Function" "POTI6" assigned. This "Function" (Poti6) should be entered for "Nick" under "Servo control" (Link).

Transmitter Mode 1-4

There are four different mode opportunities for transmitter. They are Mode1, Mode2, Mode3 and Mode4.
Those different "Modes" determine where the functions Throttle, Yaw, Nick and Roll are on the control-sticks.

The easiest way is to control the Kopter in Mode2. Here is Throttle and Yaw on the left and Nick and Roll on the right control-stick.
That is an easy Mode for beginners.

You can set normally Mode1-4 by yourself on the transmitter. How you have to do it is described in the instruction manual of the transmitter.
Who is using different modes long-term can use them as well.


In most of the explainations in the Wiki Mode2 is considered for the transmitter.
All other functions for the Kopter can be also used in a different *Mode".

A detailed describtion of the functions for each "Mode" you can find here: Stick-Setup

Check transmitter function in the KopterTool

If your channels at the transmitter have been set you can check the functions in the KopterTool.
This can be done in the Settings under the tab "Channels".

The receiver need to be connected correctly to the FlightCtrl and the transmitter has to be switched on.
After the FlightCtrl has been supplied with voltage the red and the green LED is on. After a short period of time the red LED should go off.
If the red LED ist still on and in the KopterTool an error message will be displayed ("No receiver signal") the error can be in that way:

  • Cable connection from the receiver not soldered correctly.

  • The transmitter is switched off.

  • The receiver is not bound to the transmitter. (at 2,4GHz)

  • The receiver- /transmitter crystal is bad. (at 35MHz)

  • The connected receiver provides no PPM-Sum signal

  • In the KopterTool the right type of receiver is not set Channels.

If everything is ok again the red LED should be off on the FlightCtrl and the check can start.

Now you connect the Kopter over the MK-USB to the PC. After starting the KopterTool and recocnizing the FlightCtrl you can choose under Settings the tab Channels.
Here you can check and display on the function of each channel.

If you move now the control-sticks for Throttle, Yaw, Nick and Roll or a channel assigned to a switch (button/POTI) you should see peaks in a range of "0" to "254" for the appropriate channel.

If the values are not completely going down to "0" or up to "254" you should adjust the servo limit new at your transmitter.
Those are mostly on 100%. Here you need to increase the value that much until the values from "0" to "254" can be switched in the KopterTool.

That is necessary to have correctly switched Kopter-functions or outputs.

More transmitter

Infos for more transmitter you can find here: More transmitter