MultiWii 2.2 ab sofort verfügbar

Das aller beste an einem OpenSource-Entwicklungsprojekt ist, dass es immer Leute gibt, die das ganze zum Wohle der gesamten Community weiter voran treiben. MultiWii ist ein Paradebeispiel dafür. Sei wenigen Stunden steht nun die finale Version von MultiWii 2.2 zum Download bereit.

Wie bei jedem großen Release (2.X) ist das Change-Log, welches ich unten für euch angehängt habe, wieder relativ lang.

Welche Neuerungen besonders interessant sind muss dabei wohl jeder Anwender selber für sich entscheiden, da es ganz auf den Anwendungszweck ankommt. Den Download habe ich euch ganz unten auf der Seite verlinkt.

Für mich hören sich folgende Dinge sehr, sehr gut an:

1. introduction of HORIZON MODE: Es wurde ein neuer Steuerungsmodus eingeführt, der den Acro-Mode (also nur Gyro) und den Level-Mode (mit aktiviertem ACC) vermischt. Bei niedrigem Knüppelausschalg verhält sich der Multicopter wie im Level-Mode, bei starkem Ausschlag wird auf Acro-Mode gewechselt und es sind auch Kunststücke möglich. Dazwischen werden die Einstellungen, je nach Steuereingabe gemischt.
2. failsafe code is more strict: Statt nur einem werden nun alle Kanäle auf Funkabbrüche gescannt, zudem aktiviert ein Kanalwert von 995 (die normale Spannweite ist 1000-2000) nun bereits den Failsafe-Modus. Kann man natürlich anpassen.
3. HEXH6 multicopter type added (wohl ohne Kommentar verständlich)
4. 5 hardware PWM servos avaliable with Mega boards on pins 44,45,46,11,12: Endlich mehr Servoplätze mit echtem Hardware PWM für Gimbals und Co. auf meinem MEGA-Board im Flyduspider.
5. faster cycle time than with v2.1: Mehr Geschwindigkeit ist immer gut.

Hier nun noch das komplette Change-Log von MultiWii 2.2:

main changes since the last release 2.1

***documentation***

Documentation for releases should be in the official wiki at
http://www.multiwii.com/wiki

stable and development versions can be found here:
http://code.google.com/p/multiwii/downloads/lis

For development versions you are on your own – good luck.
Don’t try any development version if you don’t follow dev evolution.
Don’t forget a multirotor is something that can be dangerous.

For discussion and questions the official forum is at
http://www.multiwii.com/forum

Evolution of the code can be followed here:
http://code.google.com/p/multiwii/source/list

MultiWii is not a product, nor a plug and play solution.
It is basically an open source project.
Don’t expect to buy a compatible board and run it without a minimum knowledge.

***Control mode***

• introduction of HORIZON MODE. We have now 3 modes:

ACRO mode.
This is the default one when none of the ANGLE & HORIZON BOX is activated.
The copter will continue rotating in the direction in which you tilt sticks. When you let go of sticks it will maintain that angle and not return to level

ANGLE mode
The position of the stick indicates the angle at which the copter tries to maintain. Sticks off = level. Full sticks in any direction and it will tilt at around 50 degrees. It’s proportional in-between.
It maintains the angle set by the stick. Let go of sticks and it returns to level

HORIZON mode <- new It’s a proportional mix of the two. Sticks off = level. Full deflection = ACRO. In between it gradually mixes from LEVEL mode to ACRO. It’s a fine mix to be able to do some ACRO with the safety of ANGLE mode when you release the sticks. It allows also a more natural way of flying as the multi seems less constrained. – failsafe code is more strict. (thanks to MIS) If activated, it takes into account all the main channels and it’s important to stay strictly inside the [1000-2000] range. For instance a throttle of 995 will activate the failsafe failsafe is optional and can be activated via #define FAILSAFE

• Acrotrainer mode introduced by PatrikE a kind of non proportional horizon mode more info here: http://www.multiwii.com/forum/viewtopic.php?f=16&t=1944
• SERVO_TILT_MIX introduced by Bledi and Gary http://youtu.be/zKGr6iR54vM corrected after to support optionally up to 2 AUX channels superposition to control the gimbal
• CAM STAB: (thanks to Gary and suggested or Arne) Ability to define Cam Stab control channels used Ability to turn off Fix for AUX3 + 4 affecting tilt/roll with camstab enabled

***add-ons***

• pilotlamp integration (thanks to mr.rc-cam, jevermeister, doughboy ) via #define PILOTLAMP http://code.google.com/p/multiwii/wiki/Documentation_Pilotlamp
• LEDRING pattern was refined thanks to shikra instructions here: http://code.google.com/p/multiwii/source/browse/trunk/LEDRing/README.txt
• variometer introduced by Hamburger enable to get audio feedback upon rising/falling copter/plane via #define VARIOMETER

***receiver & UART***

• option to use throttle PIN as the PPM PIN on mega boards thanks to MIS this way you can use the UART 1 for other purpose via #define PPM_ON_THROTTLE
• every UART port on MEGA boards can be used at the same time with different baud configuration. ie, you can connect up to 4 GUI or OSD or anything using MSP simultaneously
• the second UART port on promicro boards can be used at the same time with different baud configuration.
• spektrum (thanks to Danal) – spektrum satellite up to 12 channels, even if only 8 are usable in multiwii
• spektrum satellite BIND button, to associate a satellite without the main receiver

***PIN mapping***

• possibility to override some PIN definition in config.h (thanks to Hamburger)

***GPS***

• UBLOX GPS: the baud configuration is autodetected and the UBLOX binary protocol is automaticly set (thanks to MIS & EOSBandi)
• MKT GPS can now be parsed in binary mode is possible thanks to EOSBandi made for DIYDrones MTK firmware v1.6 and v1.9
• I2C GPS: correct directionToHome (change it to the opposite direction) there is still a problem remaining when your distance to home reaches 654m: it overflows. a I2C code evolution is needed to correct this problem
• a forward predictive filter was ported from the Arducopter code by EOSBandi optional and by default activated: #define GPS_LEAD_FILTER
• first implementation of MSP_SET_WP with the help of Ezio app (EZ-GUI), we can now control the multi with a smartphone: set a new position on a map / follow me / follow heading see Multiwii EZ-GUI specific topic: http://www.multiwii.com/forum/viewtopic.php?f=8&t=2034 some video about this functionality: http://www.youtube.com/watch?v=qpoPanmVa9Y http://www.youtube.com/watch?v=hPj6WZex8j0 http://www.youtube.com/watch?v=nPICiiaDTnc
• AP_MODE introduced by PatrikE used in GPS POS HOLD mode, outside the specified stick range the POS HOLD position is renew

***multiwii models***

• HELICOPTER and PLANE models was refined thanks to PatrickE and Hamburger multiple helicopter type HELI_120_CCPM , HELI_90_DEG servo configuration for plane, FLAP, FLAPPERON
• HEXH6 multicopter type added (thanks to shikra) – Bi-Copter pitch direction setting
• USE_THROTTLESERVO (for airplanes), COLLECTIVE_RANGE changed (second value not offset anymore)

***GUI & OSD & LCD***

• a RECONNECT button was added by PatrickE a file is now generated to indicate the last COM&Serial speed. The serial speed can be edited in this file to change the UART speed of GUI.
• New MultiWiiConf GUI v2.2 with graphical improvements (thanks to Magnetron and doughboy) cool things like virtual horizon
• optional 3 independent configurations, stick selectable settings in EEPROM (thanks to MIS) can be activated via #define MULTIPLE_CONFIGURATION_PROFILES
• a RESET button was added in the GUI if you encounter any EEPROM problem or if you want to restore the default values

***LCD***

• on mega boards, it’s possible to define the LCD port for LCD supporting true UART.
• more parameters are tunable via LCD conf, all the one in config.h with a small (*) besides, thanks to Hamburger those parameters will be moved in the GUI later in another step, once we find the good way to do it. example: failsave.throttle , vbat tunable params , powermeter tunable params
• many telemetry and LCD config enhancements (thanks to hamburger) telemetry page 3: use long boxnames telemetry page 2: show numerical values for sensor data next to bar graphs no user interaction necessary to run telemetry info upon start up set individual board name string (currently used for display; no GUI representation yet)
• LCDconfig menu: with THROTTLE=High, increment is 10 times of normal – servos are moved to neutral position during calibration and lcd.configuration

***OSD***

• RSSI PIN added for OSD use (thanks to Kataventos) the RSSI output can be retrieved via a MSP message for OSD – OSD BOX added for OSD activation (thanks to Itai)
• huge work made on an open source code OSD fully compatible with MultiWii (thanks to the team lead by Kataventos) http://www.multiwii.com/forum/viewtopic.php?f=8&t=2918 http://code.google.com/p/rush-osd-development/

***IMU and baro***

• gyro calibration could be held until the MWC stops moving introduced by MIS, and made optional after via a specific define: #define GYROCALIBRATIONFAILSAFE
• mag gain calibration is improved thanks to EOSBandi based on Fabio FreeIMU code. We won’t forget you Fabio…
• perfect euler angle computation in case of 9DOF (better heading) no more gimbal lock in GUI representation with a 9DOF sensor
• force sensors orientation to override board specific defaults optional in config.h
• default ACC LPF factor reduced from 16 (2^4), and is share with ACC LPF for alt hold
• gyro/acc complementary filter value increased from 400 to 600
• gyro/mag complementary filter now set to 250 instead of 200
• gyro scale factor changed from 2380 to 2279
• accelerometer now used below 1.15G and above 0.85G instead of previous 1.4G/0.6G settings
• option: SENSORS_TILT_45DEG_LEFT/RIGHT to change X/P configuration without changing board orientation
• ALT HOLD is greatly improved thanks to the code of Mahowik, a little bit optimized since improved baro hold (PID) algorithm that includes the accelerometer z-axis its a real major improvement for multiwii http://www.youtube.com/watch?v=T3htaJ53Z7E
• baro calibration and calculation is improved thanks to Sebbi baro indicates now altitude 0 when it is powered. This is the reference altitude.
• calculation of barometric altitude changed to include temperature, faster update rate
• new FC boards: SIRIUSGPS, SIRIUS_AIR, SIRIUS_AIR_GPS, MICROWII, GY_521, MultiWiiMega, DESQUARED6DOFV2GO, DESQUARED6DOFV4, LADYBIRD, MEGAWAP_V2_STD, MEGAWAP_V2_ADV, HK_MultiWii_SE_V2, HK_MultiWii_328P, RCNet_FC, FLYDU_ULTRA

***internal improvements***

• some default PID were changed for optimization speed in PID copmputation. The default PID should behave exactly as the previous ones. To restore your old PID settings, just a proportion is needed.
• 5 hardware PWM servos avaliable with Mega boards on pins 44,45,46,11,12 (thanks to MIS) – EEPROM settings secured by checksum (thanks to MIS)
• optional permanent logging to eeprom setting: LOG_PERMANENT
• change LED blink frequency for acc-uncalibrated or tilt>25 from 50ms to 10ms
• rework of task scheduler code thanks to ideas from Sebbi
  we have now a better computation time repartition
• optional fixate cycle time (by burning cpu time away)
• allow override of motor/servo mixing from config.h – no need to edit Output.ino
  experimental
• faster cycle time than with v2.1
• many many hidden optimizations in the code

Ich werde in den nächsten Tagen hoffentlich die Zeit finden, das neue MultiWii 2.2 auf mindestens einem meiner Multicopter mal auszuprobieren. Obwohl ich eigentlich gerade an einem anderen Thema dran bin – Stichwort FPV, aber dazu bald mehr.

Hier gehts zum Download von MultiWii 2.2

Quelle: change.txt, MultiWii 2.2 OpenSource Projekt