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See also: Graupner HoTT

Info

The described settings and procedures are related to the current V4 from Graupner.

All references to pages of the instruction manual refer to the current manual "33020_mc20_HoTT" (Link).

A working model memory for the MC-20 and a setting for the FlightCtrl you can find and download under "Example: Setting - Download".

See also: HoTT-Update

Graupner MC-20 HoTT

Shoplink: Graupner MC-20 HoTT

The MC-20 HoTT is an ideal transmitter for the MikroKopter. With its function you are able to use all 12 channels of the FlightCtrl.

The data:

• 12 channels for switches, buttons and potis

• 2,4GHz transfer technology

• Graupner indicates a range of about 3km (with receiver GR-16 or GR-24)

• Bidirectional communication between transmitter and receiver

• Display of the MikroKopter-Telemetry on the built-in and illuminated 8x21 character LCD

• Language edition of the telemetry values (via connected loudspeaker or head-set)

• 12 switches (3 three-way switches, 5 two-way switches, 2 pushbutton, 2 two-way switches with lock)

• 2 INC/DEC-switches

• 4 analog Potis

• Built-in DSC-socket for the connection of flight simulators (AeroSim) or a TrainerMode

• More than 200 systems can be used simultaneously -> No agreements on channels like 2 or 3 years ago

• Future-proofed with update capability via USB Interface (HoTT-Update)

• Different menu-languages for the transmitter (i.e. Dutch, English, French, German, Italian, Spanish)

Instruction for the MC-20

The instruction of the appropriate and actual version you can download directly from Graupner: MC-20 HoTT Instruction Manual

Configure the transmitter + bind receiver

Spring in the transmitter

By default there is a spring at the gas stick which keeps it always in the center position.
Normally this spring of the gas-stick is without function to move the stick infinitely variable. (Instruction of the transmitter - page 21)

If you have already a little bit experience and if you want to fly with vario-height control all the time, you don't need to remove the spring.
If you leave the spring in function so that the Gas-Stick is always in a middle-position you need to enter in the setting (Link) at "Stick neutral point" the middle-position => 127:

Set Stick Mode

The easiest way (also for beginners) is to fly the MikroKopter in Mode2.
Here you have the function "Gas" and "Yaw" on the left control stick, "Nick" and "Roll" on the right control stick.
(Instruction of the transmitter - page 84)

If you fly a different mode over years you can also use it here.
The stick arrangement for the different modes (1-4) and how the various functions of the MikroKopter can be set via the transmitter is described here: Stick-Setup

Adjust transmitter to Stick-Mode2 (or a different mode):

• In the opening screen of the transmitter you need to press on SET to enter the settings.

• With the arrow keys UP/DOWN you choose the entry Base setup model and with the key SET you open it.

• Here you switch to the entry Stick mode and choose it with the SET button (The displayed number is now a dark background).

• With the arrow keys you can set now the desired mode (1-4) and save it with "SET".
• Via the button "ESC" you can switch back.

Channel assignment of the control sticks in Mode2:

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

Bind the receiver

Transmitter and receiver have to be bound together, so that the receiver only reacts to that transmitter.
(Instruction of the transmitter - page 69)

To bind the receiver you do as follows:

• When turning on the transmitter you see the message RF ON / OFF. Choose OFF.

• The receiver has to be supplied with 5V (i.e via 3-core-wire from the FlightCtrl).

• Press "SET" in the opening screen to get into the settings.

• Select "Base setup model" with Up / Down and open it with the button SET.

• In that menu pull down with the arrow key to the entry Base Setup Model.

  • Only if there is already a "BIND", press once SET to get a "n/v".

• At the receiver now press and hold down the button "SET":

  • Receiver GR-12 => hold down "SET" button.

  • Receiver GR-16 => hold down "SET" button until the red and green LEDs light together (maybe difficult to see that clearly).

  • Receiver GR-24 => hold down "SET" button until the red and green LEDs light together (maybe difficult to see that clearly).

• Press "SET" within 3 seconds at the transmitter (in the row "RF BIND)
• "Finding" appears in the display for a short time.
• "RF BIND [bind]" appears in the display at success and the green LED lights continously at the receiver.

Set the receiver to sum-signal

The !Mikrokopter needs a so-called !sum-signal. All channels of the receiver are included in it. This makes the wireing a lot easier compared to normal servo-receivers.

After the receiver has been bound to the transmitter you can set the PPM sum-signal:
(Instruction of the transmitter - CH OUTPUT TYPE - page 238)

• The receiver has to be supplied with 5V (i.e via 3-core-wire from the FlightCtrl).

• Hold down "ESC" at the transmitter for about 2 seconds -> You get into the menu "Telemetry".

• Select SETTING & DATA VIEW and open it via the button SET.

• The menu RX SERVO TEST will open.

• Switch to the menu "RX SERVO TEST" by pressing "right" 5 times.
  • INFO: If you have clicked to far and you see the MK-Menu you can remove the 1-core telemetry plug from the FC to get back to the page "RX SERVO TEST".

• In the menu "RX SERVO TEST" you switch to the lower entry CH OUT TYPE.

• With the button SET you open that entry and you change from "ONCE" to SUMO (with the arrow keys UP/DOWN).

• Confirm with SET.
• You get to the data field with the number of channels in the sum-signal. Set this to "12" with Up/Down (for 12 channels).

Set servo adjustment

To run the functions on the MikroKopter properly the servo adjustment of the 12 individual channels must reach a range of "0" to "254" (See also later in the KopterTool).
The servo adjustments at the transmitter are pre-set to 100% for all channels. If you leave it in that way you are not able to reach the full servo adjustment.
For that reason you need to set all servo adjustments to 103%.

To set the servo adjustments we proceed as follows:

• Press SET in the opening screen to get into the settings.

• Select servo adjustment with UP/DOWN and open it with SET.

• Switch to the channel (S1-S12) which need to be changed. Use the arrow-key to the right on the percentages for "- travel +" and select SET.

• (Both percentage values are selected at the same time (dark background))
  • INFO: If only one percentage value is selected you can toggle/turn through the appropriate switch/potentiometer to the second percentage

• Change the percentage value with UP/DOWN to "103%" and press SET to confirm.

In that way you set all 12 channels.

(Instruction of the transmitter - page 90)

ASSIGN CHANNELS

In your transmitter the first four channels are already assigned to the control sticks for the function Gas, Yaw, Nick und Roll.
The remaining channels (5-12) you can assign freely to switches, buttons and potentiometer on your transmitter.
With those channels you can control the functions of the MikroKopter.
(Instruction of the transmitter - page 71)

Before starting with the assignment of the channels you should establish memory for that at your transmitter.
This memory need to be created as Winged Model. The first memory is usually already set as a Winged Model and can be used.
Is that not the case or you need an additional model memory (because you operate more than one Kopter or other models with one transmitter) you can set it as a new Winged Model.

Setting of the channels:

To assign the channels you proceed as follows:

First at all switch all switches to an "OFF"-position (away from you).

• Press SET in the opening screen to get into the settings.

• Select Control adjust with UP/DOWN and open it with SET.

• Choose desired channel with UP/DOWN (i.e. channel 5 => |Input. 5|GL|---| 0%|).

• Here now switch with LEFT/RIGHT to the three bars (---) and push SET.

• A display appears "Move desired switch or control adj.".
• Now switch the desired switch (or turn potentiometer).
• Instead of the three bars you will see now the operated switchn.

Repeat now the operations for the remaining channels.

Examples for the channel assignment:

This is an example for the channel assignment. Any other assignment is also possible.
(The first 4 channels for the control are already pre-assigned.)

Connect receiver

The HoTT-System offeres different receiver which can be used on the MikroKopter.
The connection of the receiver GR-12, GR-16 and GR-24 are described below.
All of the three receiver are able to provide 12 channels via the PPM-Sum-signal.

Each receiver need to be connected with a PPM-Connection-cable and a JR-Data-cable (for the telemetry transfer) (Link) to the FlightCtrl.

Connection of the receiver to the FlightCtrl2.1

The PPM-cable as well as the JR-Data-cable for the telemetry will be connected to the FlightCtrl as follows:

• PPM-cable - Black on "GND" (Ground/Minus)
• PPM-cable - Red on "+5" (Plus)
• PPM-cable - Orange on "PPM" (PPM-Data-wire)
• +
• Solder JR-Data-cable (for the HoTT-Backchannel) to "RX".
• (Connected will be this cable to the sensor connector labeled with "T" on the HoTT-Receiver.)
• +

• Jumper "JET" on the FlightCtrl has to be bridged.

Receiver GR-12

The GR-12 HoTT is a 6-channel receiver and is able to provide up to 16 channels throughout the sum-signal (depends on the transmitter).
The range with this receiver is according Graupner: 2000mtr.

Output for the sum-signal GR-12:

• The receiver has to be bound to the transmitter (see: "Binding").

• The !Sum-Signal must be activated (see: "Set receiver to sum-signal").

• The !Sum-signal is on output 6.

Telemetry connection GR-12:

The receiver has a separate data channel at output 5 for the MikroKopter telemetry:

ATTENTION:
The following setting is only for the receiver GR-12!

To receive the telemetry here you need to change the servo-output 5 first.

• In the opening screen of the transmitter press ESC to switch into the telemetry.

• With UP/DOWN choose Setting & Data View and open it with SET.

• With the arrow-keys LEFT/RIGHT switch to RX CURVE.

• Choose 5CH FUNCTION and change it to SENSOR.

Receiver GR-16

The GR-12 HoTT is a 8-channel receiver and is able to provide up to 16 channels throughout the sum-signal (depends on the transmitter).
The range with this receiver is according Graupner: 4000mtr.

Output for the sum-signal GR-16

• The receiver has to be bound to the transmitter (see: "Binding").

• The !Sum-signal must be activated (see: "Set receiver to sum-signal").

• The !Sum-signal is on output 8.

Telemetry connection GR-16

The receiver has a separate data channel on the other side of the receiver for the MikroKopter-Telemetry:

Receiver GR-24

The GR-12 HoTT is a 12-channel receiver and is able to provide up to 16 channels throughout the sum-signal (depends on the transmitter).
The range with this receiver is according Graupner: 4000mtr.

Output for the sum-signal GR-24

• The receiver has to be bound to the transmitter (see: "Binding").

• The !Sum-Signal must be activated (see: "Set receiver to sum-signal").

• The !Sum-signal is on output 8.

Telemetry connection GR-24

The receiver has a separate data channel on the other side of the receiver for the MikroKopter-Telemetry:

Check function receiver and channels in the KopterTool

If the receiver is connected to the FlightCtrl and the transmitter is switched on you can check in the KopterTool the channel assignment.
By operating the appropriate control on the transmitter you can see the peaks of the signal.

Hints:

• As a type of the receiver you must set "Graupner HoTT".

• Therefor the telemetry will be activated and set to the correct channel-offset (Otherwise the zero value would be 133 instead of ca. 128 )

• If you change the type of the receiver you need to save the setting first in the MK (Write) so that the changfe will be active.

• The peaks of the sticks (Nick/Roll/Gas/Yaw) need to have in the middle-position 127 or 128. You can adjust it with the trim button (next to the sticks).

Telemetry settings

Via the telemetry screen you can display different values over different menus:

• Current LiPo voltage

• Current consumption
• Consumed Lipo-capacity
• Height / Altitude
• Direction

• Number of satellites and SatFix

• Flight speed
• Distance and direction to the "Homeposition"
• Error messages
• Magnet value and in clination
• Temperature of the BL-Ctrl's

• FailSafe value

• Home Altitude
• Used Setting

Select Sensor

So that the telemetry data can be displayed you need to set the appropriate sensors on the transmitter.

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN choose SENSOR SELECT and open it with "SET".

• Here you can select all sensors.

Telemetry display

On your transmitter you have the opportunity to display the telemetry in two different menues:

Summarized you can find the values of the telemetry in theMikroKopter-Menu:

Or with more and detailed information on several pages in the Text-Telemetry:

Please note: An audio output as well as logging the GPS position on your transmitter is only with the MikroKopter-Menu to the same time possible.
If you are in the Text-Telemetry the voice output and the GPS-Logging to the Micro-SD-Card in your transmitter is during that time not possible!

MikroKopter-Menu

So that the "MikroKopter-Menu" displays the right values you need to select the sensor "GPS".

On your transmitter you will find an extra MikroKopter-Menu which displays you summarized the most important telemetry values.
Out of the main menu you will get into the telemetry display by pressing UP/DOWN/LEFT/RIGHT of the transmitter.
You can browse it with the LEFT/RIGHT button to get into the MikroKopter-Menu.

You can select the GPS-Sensor if you press the UP/DOWN button in the "MikroKopter-Menu".

The following values are displayed in the MikroKopter-Menu:

• Lipo voltage
• Flight Time
• Consumed Lipo-capacity
• Height / Altitude
• Direction of the Kopter
• Actual power consumption
• Numbers of satellites
• Flight Speed
• Distance and direction to the "Homeposition"

If everything is "OK" at your Kopter that will be displayed under "MikroKopter". If you have an error a message will be displayed.

MikroKopter Text-Telemetry

Please note: If you are in the Text-Telemetry the audio output and the GPS-Logging to the Micro-SD-Card in your transmitter is during that time not possible!

The "Text-Telemetry" you can open via the menu "Telemetry". With the "Text-Telemetry" you are able to display more telemetry values.

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN select Setting & Data View and open it with SET.

• Now either way click 1x arrow "UP" or 6x arrow "RIGHT".
• The Text-Telemetry will open.

Here the following values will be displayed:

• Lipo voltage
• Flight Time
• Consumed Lipo-capacity
• Height / Altitude
• Direction of the Kopter
• Actual power consumption
• Numbers of satellites
• Flight Speed
• Distance and direction to the "Homeposition"

If everything is "OK" at your Kopter that will be displayed under "MikroKopter". If you have an error a message will be displayed.

If you press one time the SET button you can display the magnet value and the inclination:

With the arrow keys LEFT/RIGHT you can open two additional displays in the "Text-Telemetrie":

Anzeige:

• Flight Time
• Lipo voltage
• Consumed Lipo-capacity
• Direction of the Kopter
• Height / Altitude
• Direction to the Homeposition
• Distance to the Homeposition
• Power consumption
• Flight Speed
• Numbers of satellites + Fix
• Temperature of each BL-Ctrl

and

Display:

• Used Setting
• Min. voltage for low-voltage warning (battery)
• The set Kopter-Type
• Mode and switch status "Altitude switch"

• Mode and switch status "CareFree"

• Mode and switch status "GPS" + FailSafe Time

• The set FailSafe Height

• Position of the control sticks (Ni=Nick, Ro=Roll, GS=Gas, Ya=Yaw, C=Nick camera mount)

Telemetry - additional Info

In addition to the described telemetry display you can see some additional information / symbols.

These are as follows:

• '-' = No GPS fix
• '/' = off
• '?' = Coming home, but home Position unknown (goes to PH then)
• 'H' = Coming home
• 'W' = Flying Waypoints
• 'D' = Dynamic Position Hold
• 'P' = Position Hold
• 'm' = Manual controlled

Set voice output and Vario

With the integrated speaker or with headphones you can hear the chosen telemetry values.

Selection of announcements

In the settings you can choose which telemetry values should be issued:

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN select Voice Trigger and open it with SET.

• Select here the appropriate sensor (i.e. "ELECTRIC AIR-MODUL" and "GPS") and open it with SET.

• In the opening window you can select the desired menu points for the voice output.

Browse down to "ELECTRIC AIR-MODUL":

And the settings on "GPS":

Announcements "All Messages" or "Warnings only"

Additionally, you can choose messages you want to hear.
If you e.g. will not hear a message if you switch a function (like GPS, altitude, CareFree, etc.) you can change it.

Therefore you can switch between "All Messages" or "Warnings only":

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN select Setting & Data View and open it with SET.

• Now either way click 1x arrow "UP" or 6x arrow "RIGHT".
• The Text-Telemetry will open.

To change the announce "click" 3x the arrow "Left". Now you see the following window where you can change between "All Messages" or "Warnings only".

Voice output set to a button

To get the selected values one after the other to the voice output you can use here a button on your transmitter.

That need to be set also in the menu "Telemetry":

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN select Voice Trigger and open it with SET.

• Here switch to TRIG and activate it with SET.

• An information opens up: "Desired switch to ON Position (Ext. Switch: SET)"
• Push now the desired button on your transmitter.

VARIO-Altitude regulator via loudspeaker

Like the voice output a tone can be issued for the climb and the fall via the switched-on altitude regulator on your transmitter.
It is recommended for that function to use that switch which is used to switch ON/OFF the "Altitude hold".

We switch again into the menu "Telemetry":

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN select Voice Trigger and open it with SET.

• Switch here to VARIO and activate it with SET.

• An information opens up: "Desired switch to ON Position (Ext. Switch: SET)"
• Push now the desired button on your transmitter.

Logfile in the Transmitter

The HoTT Telemetry data can be logged on a SD card in the HoTT-Transmitter. Just in case you would loose a MikroKopter, you could see the last GPS Position in the Logfile of the Transmitter.

(Graupner HoTT Manager)

(Graupner grStudio => Log View)

Starting the SD-Logging in the Transmitter

• to start the logging, the "flight time counter" in the transmitter must be started
• under "Flight timers" in the menu of the transmitter you can assign a switch to start the flight timer (see the manual of the Transmitter)
• A small SD-card-Symbol will appear on the LCD when the logging runs

You can start the "flight time counter" with a switch or a stick, but you can not stop it with the same. For this you have to press "ESC".

Setting for a flight simulator or trainer mode

You can also use the transmitter with an flight simulator or for the trainer mode. To use all channels of this transmitter you should change the DSC Output to PPM24.
If you do not change this you can only use the first 5 channels of this transmitter with an flight simulator or for the trainer mode.

• In the opening screen of the transmitter you need to press on SET to enter the settings.

• With the arrow keys UP/DOWN you choose the entry Base setup model and with the key SET you open it.

• Here you switch to the entry DSC Output and choose it with the SET button.

• With the arrow keys you can set now "PPM24" and save it with "SET".
  
  

Example: Setting - Download

Modell memory for transmitter

A "ready to use"-setting like above you can download here:

• Download modell memory (for MC-20)

(To enlarge -> click on the image)

After downloading the file (aMK MC-20.mdl) you can copy it directly into a folder "Models/mc-20" on a Micro-SD-Card.
How you import model memories from the Micro-SD-Card into your transmitter can be read in the instruction on page 66 (Chapter: Import SD).
>

INFO:
If you insert an empty Micro-SD-Card into the transmitter and switch it on, automatically the needed directories will be created.

In this model memory is the upper right Flight-Time counter/Flt active. This one is set in that way as soon as the Gas-Stick will be moved upwards the Flight-Time counter starts.
This Flight-Time counter is required so that the GPS position data of the Kopter can be saved on a Micro-SD-Card in your transmitter.
So, if the Kopter is maybe getting lost you still have then the last received coordinates of the Kopter.

Is the Gas-Stick down this counter still continues! (Instruction see page 139)
To stop it you can push the ESC button.
To reset the Flight-Time counter you need to push the UP/DOWN (or LEFT/RIGHT) button to the same time on the right Touch-Pads.
(Instructions of the transmitter - page 138 + 252)

The channels in both model memory are set as you can see here.
If you use this model memory you have to set this functions/channels in the settings of the FlightCtrl.
(or you dowload the setting below and update your FlightCtrl with this setting.)

(to enlarge -> click image)

TIPP: If you use a different mode rather then Mode 2 you are still able to use the downloaded model memory.
After downloading the model memory you can set the desired mode (1,3,4) by yourself (Instruction manual page 68).
The control sticks have then the channels/function of the set mode. All other switches/channels remain as described in the example.

Setting FlightCtrl

Here you find a setting for the FlightCtrl (from V2.02): Download.
The settings are adjusted with the model memory for the MC-20.

To load the setting into the FlightCtrl, open the settings of the KopterTool.
Here "click" the button Load in the bottom bar and open the downloaded setting "MK-Setting_(V2.00).mkp".
After this "click" the button Write to set the setting into the FlightCtrl.

Note:
The FlightCtrl have 5 Settings you can save. If you wan to use the downloaded setting in all 5 settings you have to open each setting single and save the downloaded setting there.
After you safe the setting into the FlightCtrl you have to set the right Mixer (Link).

See also:

• Firmware-0.88

• HottUpdate

• KategorieFernsteuerung