OpenAero2_User_Guide - nextcopterplus - OpenAero2
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1. 6V for LiPo When you change this value OpenAero2 will automatically recalculate the LVA voltage based on the number of cells and the minimum cell voltage RC inputs Screen i The RC inputs screen shows you the current values received by the system in either PWM or CPPM mode In CPPM mode only the first five channels are shown Pressing button 4 Cal performs a stick centering calibration This should make all the numbers on the right hand column drop to zero Make sure all controls are centered and throttle at minimum before calibration Pressing button 3 Failsafe saves the current stick positions to the M1 to M8 failsafe setting The servos will adopt this position in the event of a loss of input signal Note that most receivers will still transmit the last known RC values if it loses the TX signal so this is no test of failsafe You need to physically disconnect the receiver It is recommended that receivers with built in failsafe be set up and used Sensor Inputs Screen Lo eae The sensor inputs screen shows you the current values of all sensors Pressing button 4 Cal calibrates the accelerometers The gyros are calibrated at start up Balance Meter Screen The balance meter screen shows you a graphical representation of where the board considers down to be Pressing button 4 Cal calibrates the accelerometers A detailed description of the correct use of this screen is given in the section In2. Futaba channel order OpenAero2 supports JR Spektrum and Futaba CPPM channel order as shown below JR Spektrum CH1 Throttle CH2 Aileron 1 CH3 Elevator CH4 Rudder CH5 Gear switch CH6 Aileron 2 CH7 Aux 1 CH8 Aux 2 Futaba CH1 Aileron 1 e CH2 Elevator e CH3 Throttle e CH4 Rudder e CH5 Gear switch e CH6 Aileron 2 e CH7 Aux 1 e CH8 Aux 2 Servo connections For conventional aeroplanes the connections are as follows e M1 Throttle CPPM only e M2 Free channel or Pitch Tilt for camera stabilising e M3 Free channel or Yaw Pan for camera stabilising e M4 Free channel or Roll for camera stabilising e M5 Elevator e MG Left aileron e M7 Right aileron e M8 Rudder For flying wing models the connections are as follows e M1 Throttle CPPM only e M2 Free channel or Pitch Tilt for camera stabilising e M3 Free channel or Yaw Pan for camera stabilising e M4 Free channel or Roll for camera stabilising e M5 Elevator e M6 Left elevon e M7 Right elevon e M8 Rudder The LCD Menu System The Status Screen The status screen gives you a continually updated display of the battery status flight modes and any error messages For performance reasons the status screen will switch back to the idle screen after a short interval The interval defaults to 5 seconds but can be set to up to 30s in the General Menu Status screen Idle screen e Mode The current mixer mode e Vers
3. Go to the RC Inputs screen and switch on your transmitter and receiver You should immediately see values appearing in both columns next to each connected channel e Make sure all the tranmitter channels are centered and the throttle to minimum and press button 4 under the screen label Cal This performs a stick centering calibration e The right hand column should now all be zero and change 1000 or so at the extremes of throw Step 6 Servo direction e Once returned to the status menu the servos should be activated and you should be able to control all outputs with the transmitter Please make sure that stability and autolevel are both OFF to continue Their status can easily be seen in the status menu e Move all surfaces and check that they move as expected While you can reverse the channels in the M1 to M8 mixers it is best to reverse them in the transmitter first Step 7 Gyro direction e Now switch on stability control while leaving autolevel OFF e Pitch the nose of the model up and down while watching the elevator The elevator should move to counteract the pitching Pitching the nose UP should make the elevator move DOWN e lf this is not the case you can reverse the pitch gyro in the M5 mixer menu e Roll the model left and right while watching the ailerons They should also move to counteract the rolling Use the M6 and M7 mixer menus to reverse the roll gyro as required e Finally yaw the model left and right whil
4. buttons down in space restricted areas e Contrast Allows you to change the contrast of the LCD See below e Status time Allows you to set the amount of time the status screen is displayed until it is replaced by the idle mode screen Settable from 1 to 30 seconds e RC mix Enables the two on board RC mixers e LMA timeout Allows you to set the amount of time without RC activity before the Lost Model Alarm goes off Setting to zero disables the alarm e Camera stab Setting this to ON allows the board to function without an external RC source Use only for stand alone camera stability e Camstab servo rate If Camera Stab is ON you can increase the servo refresh rate on M1 to M4 to 300Hz e Acc LPF Allows adjustment of the accelerometer Low Pass Filter from 1 infinite to 64 about 1 Hz e CF factor Controls the fusion of Accelerometer and Gyros The higher the number the faster as gyro is favoured the lower the more accurate but slower e Yaw magic Automatically centers the Yaw axis when in heading hold mode if the yaw has drifted off center Adjusting LCD Contrast e Reducing the number reduces contrast e Pressing button 1 Def returns the value to the default of 38 e Increasing the number increases contrast RC Setup Menu ad iow cl l e CPPM Ch Order When using CPPM input this setting allows you to select either JR Spektrum TAER or Futaba AETR channel order e RX mode Many users have previously expe
5. My favorites wv Sign in PY nextcopterplus Open source fully featured flight controller code Search projects Project Home Downloads Wiki Issues Source Search Current pages for Search OpenAero2 User Guide OpenAero2 User guide V1 0 Updated Feb 16 2013 by thompson gmail com The OpenAero2 User Guide V1 0 What is OpenAero2 OpenAero2 is an aeroplane stabilising software for the KK2 multicopter board You put the programmed KK board in between your receiver and the servos in your aircraft When deactivated OpenAero2 just passes the servo signals from your receiver to the servos When activated the gyros on your KK board are used to move the servos to counteract any unwanted movement of the aircraft OpenAero2 has eight output channels which can all mix from five PWM RC channels in PWM mode and eight RC channels in CPPM mode In addition four preset channel sources and two on board RC mixers can be used as inputs Each of the eight output channels can have any or all sensors mixed together What models can OpenAero2 be used with OpenAero2 have a completely flexible mixer which allows it to control just about anything but comes with three preset mix tables Aeroplane In aeroplane mode there are four stabilised outputs Left Aileron Right aileron Elevator and Rudder For those needing a throttle control you can just take the throttle output of your receiver directly to the ESC for your motor In CPPM mode there ar
6. e five stabilised outputs Left Aileron Right aileron Elevator and Rudder plus a copy of the throttle signal from the receiver on M1 Read more about the differences between PWM and CPPM receivers elsewhere in this Wiki Flying Wing Flying wings normally have delta flaperon mixing done by the transmitter This allows you to set the aileron elevator mixing as best suits you and your aircraft When these signals pass through the OpenAero2 software the gyro stabilising has to accommodate the flying wing channel mixing For instance in response to pitch input the standard version of Openaero2 would simply adjust the elevator servo However the flying wing version adjusts both flaperons to have the desired effect In flying wing mode there are three stabilised outputs Left Flaperon Right Flaperon and Rudder For those needing a throttle control you can just take the throttle output of your receiver directly to the ESC for your motor In CPPM mode there are four stabilised outputs Left Flaperon Right Flaperon and Rudder and a copy of the throttle signal from the receiver on M1 Camera Stability In Camera stability mode both gyros and accelerometers are enabled to stabilise 3 axis camera mounts See the separate guides for setting up camera stability How do I connect up my model A note about servo connections There is no 5V power supplied to M2 to M8 so you must supply your own 5V to any of M2 to M8 va a BESC or battery pack R
7. e observing the rudder Adjust the M8 mixer menu to reverse the yaw gyro as required Step 8 Auto level setup e Firstly go into the balance meter screen of the menu and observe the balance meter The black dot indicates where OpenAero2 thinks down is e Place the model on a flat surface and chock up the tail or nose until it is level and in its normal flying attitude e Keeping the model perfectly still carefully press button 4 under the screen marker Cal After a short pause the black dot will move to the center of the display e Go back to the status menu e Switch off stability control and switch ON autolevel e Tilt the model in pitch and roll while watching the respective surfaces They should move slightly to compensate and remain in that position e lf they move in the reverse sense reverse the pitch and roll acc settings in the mixer menus for M5 M6 and M7 as appropriate Every time you power up OpenAero2 There are some important things to note when starting OpenAero2 Gyro calibration The gyros are calibrated automatically when the model is powered up It is important that the model is held very still while the gyro calibration is taking place If you move the model during calibration the Sensor Error message will appear with a warning beep The only option is to repower the board Safety Always make sure your throttle is set to minimum before attempting to power up your model Warning Even with the transmitter thrott
8. eceiver connections For a standard multi wire PWM receiver you need to use the normal PWM inputs of the KK board However the THR input of the KK board has been repurposed to be the secondary aileron input If you have a CPPM receiver connect the single wire to the RUDDER input Also don t forget to enable CPPM mode in the RC Setup menu e AIL Aileron signal input required e ELE Elevator signal input required e THR Second aileron signal input optional e RUD Rudder signal input optional CPPM input e AUX Stability switch input required Please make careful note that for OpenAero2 to output servo signals at least two inputs including the stability switch input MUST be connected to the KK2 board Using the OpenAero2 menus you can set up how you wish to control stability and autolevel This will be discussed later in the guide Here is a diagram showing how to connect up a PWM receiver Direction of flight Piezo buzzer Battery connection for Low Voltage Alarm ETETE Proman aileron v Throttle out CPPM Elevator mi lt 4 Pitch Tilt for camstab Throttle Second aileron gt lt 4 Yav Pan for camstab 4 Roll for camstab lt A Primary aileron Left elevon 4 Second aileron Right elevon CPPM input Rudder gt Stability Autolevel AUX gt CPPM channel order CPPM mode requires that the receiver and a transmitter can reallocate channels if not matching the JR Spektrum or
9. evel on RC Setting defaults Stabchan GEAR AUX input on KK2 board Autochan GEAR AUX input on KK2 board Flapchan THROTTLE THROTTLE input on KK2 board Initial setup and calibration The first time you set up OpenAero2 you will have to adjust a few things to suit your radio gear and particular usage Step 1 Model type Go into the General menu and change the Mode to that which suits your model The default is Aeroplane Step 2 RC settings e Set the Rx mode to suit your radio Unless you are using CPPM start with PWM1 CPPM users select CPPM e lif you are using CPPM also select the channel order between either JR Spektrum or Futaba e Select which input channel you plan to use for stability PWM users will normally select the fifth channel GEAR as that corresponds to the fifth AUX input on the KK2 CPPM users can pick any unused channel e Select which input channel you plan to use for autolevel PWM users may select the unused throttle input THROTTLE or double up the two functions on the fifth channel GEAR CPPM users can pick any unused channel e lf your radio carries the second aileron channel on a channel different to the default of FLAP channel 6 set that here too Step 3 Stability settings e For now just alter the Mode as described above in Stability and Autolevel switching Step 4 Autolevel settings e For now just alter the Mode as described above in Stability and Autolevel switching Step 5 RC check e
10. ion The version number of the loaded firmware e Input The RC input mode CPPM PWM1 PWM2 or PWM3 e Autolevel The current autolevel status ON OFF e Stability The current stability status ON OFF e Battery icon The battery icon shows the remaining battery capacity The limits of the capacity meter are calculated from the battery settings menu For example if a 3S LiPo is used and the minimum cell voltage is set to 3 7V 370 the graphic will show empty at a total battery voltage of 11 1V If the maximum cell voltage is set to 4 2V 420 the graphic will show full at a total cell voltage of 12 6V e Battery voltage The battery voltage is displayed under the battery icon Pressing button 1 goes to the main menu Main Menu ee ee Main menu The main menu stops the loop The main menu controls should be self explanatory LEFT exits to the status menu RIGHT goes down into a submenu UD DOWN moves through the menu list Sub menus LEFT exits to the main menu RIGHT open up an item to edit UD DOWN moves through the sub menu list Menu item LEFT resets the item to its minimum value RIGHT saves the item UD DOWN increments and decrements the item General Menu Pode Grientation Contrast Status trne 5 baai e Mode Allows you to select from the input preset mixers Currently there are presets for dual aileron aeroplane and flying wing e Orientation Remaps the sensors so that you can mount the board vertically
11. itial setup and calibration RC Mixer 1 and 2 There are two dedicated mixer channels MIX1 and MIX2 These can be used by any of the output channels M1 to M8 as a source You can therefore do delta taileron elevon etc mixing with OpeAero2 without needing special transmitter mixing functions e Source A Set the first channel source to be mixed here e Volume Set the amount of channel A required e Source A Set the second channel source to be mixed here e Volume Set the amount of channel B required Mixer Menu 1 to 8 Each of the mixer menus M1 to M8 works in the same way a selected RC channel is manipulated and mixed with the sensors to result in the desired effect b e Source Source RC input channel for this output e Polarity Input channel polarity Normal Reverse e Volume The percentage of the input channel you wish to use 0 to 125 e Roll gyro Roll gyro signal enable disable Off On If you wish this output to respond to roll enable this e Polarity If the response is backwards to what you need set this to Reversed e Pitch gyro Pitch gyro signal enable disable Off On If you wish this output to respond to pitch enable this e Polarity If the response is backwards to what you need set this to Reversed e Yaw gyro Yaw gyro signal enable disable Off On If you wish this output to respond to yaw enable this e Polarity If the response is backwards to what you need set this to Reve
12. le set to zero there may be a momentary output from the KK board to the throttle channel which may cause the motor to turn very briefly As such stay well away from the motor and propellor and sure your model when powering it up Donations OpenAero2 is a open source project and is free however it is also the result of many hundreds of hours of hard work If you feel motivated to donate to the project please feel free I m always happy to make special versions for people Ss Yeah Google Code sucks and the button won t work You can find a working button on the OpenAero2 Project page at the following link https sites google com site openaerowiki home Comment by mark ben gmail com Nov 18 2012 It would be good to have clearer instructions on how to set up a 3 way switch mean like simple steps for dummies like me Pics are always the easiest to understand have a Hitec Aurora 9 Mark Bennett gt Sign in to add a comment Terms Privacy Project Hosting Help Powered by Google Project Hosting
13. oll accelerometer e Pitch P PID Proportional gain for the pitch accelerometer e Roll trim For fine roll tuning of the autolevel e Pitch trim For fine pitch tuning of the autolevel Expo Menu e Aileron Aileron expo in e Elevator Elevator expo in e Rudder Rudder expo in e Differential This feature is not implemented in this release e The on screen graph is drawn using the actual expo table and so gives you an accurate view of the response curve Battery Menu i s _ _ a a innan ns PBati B Alarrr inniy O i tri AH a A TA i f oa q x a m M L fc ro ed i k gt eee LiPo 22am oi a na e Battery type Used internally to preset the min and max cell volatges e Cells Number of cells in your battery pack When you change this value OpenAero2 will automatically recalculate the LVA voltage based on the number of cells and the minimum cell voltage e Alarm mV This is the low battery alarm LVA setting You can change this value at any time but changing either the number of cells or the minimum cell voltage will over write the LVA 1000 equales to 10 00 volts e Max mV Set this to the maximum cell voltage that you like to use Defaults to 420 4 2V for LiPo Cells Alarm tro i Max rriv fF dA Sec 3 na s 4 e Min mV Set this to the minimum cell voltage that you like to use defaults to 360 3
14. oximately one minute after the last detected RC input the Lost Model buzzer will sound and this message will be displayed The alarm can be cancelled with any stick input Throttle High PWM does not require a throttle input in OpenAero2 In CPPM mode however the throttle signal is passed through the board and appears as a PWM signal on M1 As a safety measure if the board is powered up with the throttle set to more than about 5 the oupts will be disabled an alarm will sound and this message will be displayed How do I set up OpenAero2 Stability and Autolevel switching Due to countless requests you now have absolute freedom in how to enable these modes In the Stability and Autolevel Settings menus you can select which method of control you wish to use e OFF Always off e Autochan On when the channel set as Autochan in RC settings is more than 50 e Stabchan On when the channel set as Stabchan in RC settings is more than 50 e 3 pos Stability on when the 3 pos switch is more than 33 Autolevel also on when the 3 pos switch is more than 66 e ON Always on 3 pos switch The three position switch mode allows you to have both Stability and Autolevel on one switch but have them selectable The way it works is this For the switch position between minimum and about 33 Stability off Autolevel off For the switch position between 33 and about 66 Stability on Autolevel off For the switch position above 66 Stability on Autol
15. rienced trouble with their receivers and OpenAero For many it was because they did not use a rudder input The rudder input was used by the software to signify that all channel data had been received Synching on the rudder was called PWM 1 Next tried the option of synching on the stabilisation channel as it is normally a higher channel number That is called PWM2 PWM1 and PWM2 are the same as in OpenAero but PWM3 is new PWMs3 is for synching with whatever is on that fifth channel the KK2 has If you have no serwo jitter then PWM1 is working for you but if you use PWM please try PWM2 and PWMs3 to see what difference they make e Stability input Set this to the channel number that you plan to use for stability control e Autolevel input Set this to the channel number that you plan to use for autolevel control It can be the same as for stability if you like Oo l l l a SS H M ii e 2nd aileron Set this to the channel number that your radio uses for the second aileron channel e Preset 1 to Preset 4 When using a camera mount which is stabilised but not necessarily controlled you need a fixed offset to feed that channel These can be set up here Stability Control Menu mm mm mw aM er e Mode This setting determines how the stability is to be controlled There five options OFF Always off Autochan On when the channel set as Autochan in RC settings i
16. rsed e Roll acc Roll accelerometer signal enable disable Off On If you wish this output to respond to the roll accelerometer enable this e Polarity If the response is backwards to what you need set this to Reversed e Pitch acc Pitch accelerometer signal enable disable Off On If you wish this output to respond to the pitch accelerometer enable this e Polarity If the response is backwards to what you need set this to Reversed e Min The minimum servo travel limit 125 to 125 e Max The minimum servo travel limit 125 to 125 e Failsafe The failsafe servo position 125 to 125 Over ridden by pressing the failsafe button on the RC Inputs screen Error messages lf an error or alarm is detected the buzzer will sound and a message will be displayed on the screen There are five possible screen messages Sensor Error When the board is powered up it must remain still so that the gyros can be accurately calibrated It the boards detects movement during calibration this error will be displayed To clear this error repower the board while keeping the board still Battery Low If you are using the board to monitor the battery voltage when the current battery voltage falls below the set alarm point this message is shown If you are not planning to monitor the battery voltage please set the LVA to zero No Signal This message will be displayed when the board detects a loss of RC signal a ee Lost Model Appr
17. s more than 50 Stabchan On when the channel set as Stabchan in RC settings is more than 50 3 pos Stability on when the channel set as 3 pos in RC settings is more than 33 Autolevel also on when the channel set as 3 pos in RC settings is more than 66 5 ON Always on ROM e Roll P Gain PID Proportional gain for the roll gyro e Roll Gain PID l term gain for the roll gyro e Roll D Gain PID Differential gain for the roll gyro e Pitch P Gain PID Proportional gain for the pitch gyro e Pitch Gain PID l term gain for the roll gyro e Pitch D Gain PID Differential gain for the pitch gyro e Yaw P Gain PID Proportional gain for the yaw gyro e Yaw Gain PID I term gain for the roll gyro e Yaw D Gain PID Differential gain for the yaw gyro Note The function of PID gain controls is outside the scope of this basic User s Guide Autolevel Control Menu ee Mode Hick P ACE I MCT E o m e Mode This setting determines how the stability is to be controlled There five options 1 OFF Always off 2 Autochan On when the channel set as Autochan in RC settings is more than 50 3 Stabchan On when the channel set as Stabchan in RC settings is more than 50 4 3 pos Stability on when the channel set as 3 pos in RC settings is more than 33 Autolevel also on when the channel set as 3 pos in RC settings is more than 66 5 ON Always on e Roll P PID Proportional gain for the r
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