MultiWii

i3dm

PatrikE wrote:Atm...
Don't throttle back fully during RTH!
I will limit the Elevator when motors is stopped to prevent stall in next release.

i thought multiwii controlled the throttle during RTH?

i3dm

PatrikE wrote:There's still a nasty bug in RTH....
Don't allow motorstop during Climbout to RTH altitude.
It will Stall the plane totally.

what do we need to do to avoid this?

i3dm

Patrik, can i use the copter method to trim my plane with multiwii airplane? How to trim your Copter: version 1.7 and more 1. Trim in “acro” = headholding mode: Calibration is made on each power on, but you can do it manually like before: Full throttle down + full yaw left + full pitch backward Just...

i3dm

PatrikE wrote:Since i have 8 channels and only need two for flight modes.
I use a dedicated switch just for ARM.

OK but it should be armed for all flight conditions right? if its stick armed, it could potentially disarm in flight if the stick is moved accordingly.

i3dm

The Arm function on Planes is mostly a protection against Stick Setup combos that are available When DisArmed. In next release i will add a function to Disable Disarming planes. Once armed it will remain armed as long as there is battery connected or Failsafe Disarm. But for now you must have ARM a...

i3dm

If you want your plane to come back. Check boxes for. Angle + Gps Home . Stay "Hold" at location. Angle + Gps Hold . That's the only thing you need for navigating the plane. Mag & Baro will disturb navigation with GPS if you activate them. You can use Mag for non Gps flying. Not teste...

i3dm

PatrikE wrote:Correct!

so i set:
1. passthrough (manual mode).
2. horizon (since i want manual control with auto levelonly).
3. horizon + gps home + gps hold + baro + mag (this is for RTH).

is this OK ?

i3dm

Whats the difference between acro and passthrough? Difference between Flight modes. Angle restrict the model Tilt angels to ~45 degrees and gives a real Trainer feeling. Horizon Gives you more freedom. Allows rolls and loops. But Auto recover if sticks is centered. Acro Full freedom for maneuvers. ...

i3dm

Whats the difference between acro and passthrough?

PatrikE, i now have your version of KV_OSD running as well

i3dm

I've got mine working on an AOIP running MW2.2 Had to program the 3DR Radios to have the baudrate I wanted. I used 115200 for the MWii and computer connection, with 96k for the airspeed (3DR to 3DR) baudrate. I made an adapter for the AOIP addon board Xbee shield and picked up the 5V elsewhere (onl...

i3dm

@i3dm The plane should be mechanically correct trimmed for level flight. Exactly as a plane without stabilisation. Fly the plane in Passthru and trim it to fly level. Land and remember the positions of the control surfaces. zero the trims on TX. The correct way to trim Adjust linkages until control...

i3dm

So i have Multiwii Airplane installed in my flying wing and i have a few questions: Edit: got most of it working. one question though - what happens when i have to trim my plane in pass through mode? when flying in HORIZON for example the board will think i want to turn as the trims are off center, ...

i3dm

You are limited to some pins in the current software, as you can only use pins that generate a interrupt. This is due a hardware limitation (not all pins generate a interrupt). Another way would be to use the ICPX pins (ICP1-ICP5 on Mega 2560). But you have to change the code / initialize the timer...

i3dm

PatrikE,

any videos of your flight testing with your Multiwii airplane RTH version?

i3dm

Hello guys, on one of my Crius SE boards i think i have a problem with PPM on throttle pin. if i connect there the RC signals go crazy, and in another identical board it works 100% fine with the same code. how can i change the PPM SUM input pin to the Crius SE board to lets say A7? i dont want to us...

i3dm

Not much but some NEO 6 stuff is added/changed in your files. im a bit emberrassed.. hehe actually both files seem to work now - perhaps the sattelite reception was borderline yesterday, the Ublox module showed a 3d lock (3 sats+) and the adapter didnt show it, but now with 6 sats both files seem t...

i3dm

How does your version perform RTH? simply turn home and fly in a straight line on steady altitude? and then circling home or..? Short answer YES! Long answer... When RTH is activated. #1 Start Climb to >20 m #2 Begin Navigating while Climbing to RTH Alt. #3 Navigate to home maintaining altitude. #4...

i3dm

PatrikE wrote:Not much but some NEO 6 stuff is added/changed in your files.

Crossing fingers thats the ticket to get it to work then

Oh, and how does your version perform RTH? simply turn home and fly in a straight line on steady altitude? and then circling home or..? i didnt fimd this info anywhere.

i3dm

PatrikE wrote:You can find the changes if you search in I2C_GPS_NAV.ino for
#define FIXEDWING // Patches for Navigation on Fixedwing.
#define I2CPATCH //Corrects OSD data and Navigation on Fixedwing.

is the original file i used any different than yours was originally (before patches)?

i3dm

can i use the stock I2C_GPS with your airplane setup? Not recommended! I patched the file you linked to. m Compiles But Not tested but. Test if it works with you Ublox. Wow that was quick - thank you! I will test tonight once im in ront of my desk. is it any different than your original version? BT...

i3dm

PatrikE wrote:I'll check if there's any difference.

Thank you - that will be most helpful

BTW which calculations did you change in your patch?
can i use the stock I2C_GPS with your airplane setup?

i3dm

@i3dm Sorry i don't have any experience of Ublox. I only use NMEA Gps. Non of my patches should effect it. It just changes some calculations. thats interesting - as it works perfectly well with the I2C_GPS versions i have on my Quads. This is what i currently use (i chose V2 in the post) and works ...

i3dm

Patrik, I have actually found the TXT file and read it - and configured everything but i can not get my Ublox GPS to speak to the i2c_gps patched version. in voth 2.1 and 2.2 of i2c_gps patched, i defined Ublox 115200 and loaded the Ublox config file in your folder (which defines Ublox protocol and ...

i3dm

Hello guys, i would like to setup a Crius SE with Multiwii airplane on a flying wing. I Packed all All tools and Modified Versions I Used For Dev. Info in the Package. FixedWingNav.rar All major problems is fixed and It feels Stable now. /Patrik Patrik - after reading around in the thread - thats a ...

i3dm

guys,

is there any waypoint navigation code that runs on a 328P board?

i3dm

scrat wrote:Most fo them is using MS baro. BMP085 is old and has +-2m tolerance. MS baro has i think +-20cm.

perhaps. its a small silver rectangle with a hole

i3dm

Johnnynunes wrote:Problably a bad barometer, all in these low price boards are very bad... No miracles

This is a standard Bosch BMP085 - most of all Multiwii boards use this baro.

i3dm

Hello guys, im flying a Crius SE board on MW2.2 and managed to get very good results in GPS hold (positioning is outstanding). the only problem im still having is with the alt hold function jumping slowly up/down. certain gain settings help somewhat, but i can not get it really stable in altitude ax...

i3dm

There is no "Autoland" in MWii .... Activate the Baro, decrease throttle to 0 und the copter will descend smooth .... thats, what some people means to be "Autoland" thats not what i mean, i saw a video of the Multiwii doing RTH, and then descending and landing on its own - no st...

i3dm

is this now a stable version for plane flying with RTH for Multiwii?

i3dm

Guys,

can anyone please give a quick rundown on flashing airplane firmware to a Crius SE board + configuring 2 modes: altitude hold+stabilzation, and return to home?

i3dm

This is a long and very interesting thread.
i apologize in advance for not reading entirely through it - but is there a good stable version of MultiWii airplane with RTH already available?
if so i might be able to assist in some testing soon..

i3dm

i have a sonar in hand, but im not sure how to enable it or the "auto land" feature?
anyone care to assist?

i3dm

im facing the same situation with an inverted mounted MPU6050, and while i haven't tested this yest, the explaination in the Wiki seems rather simple, isnt it?

i3dm

Hello guys,

i have conencted an EXTERNAL MPU6050 gyro/ACC sensor to my Multiwii V2.2 and i need to mount the gyro upside down, requiring reversing of some axis of gyro/ACC.

can anyone explain how this could be done?

thanks.

i3dm

Ive tried different versions of MultiWii, different GUIs and what not, i still can not get the ITS3205 gyro to respond, only the ACC, baro and mag respond (correctly).

i think i may have a dead gyro - anyone else have some tips?

i3dm

Hello guys, i have this board: m flashed Multiwii V2.2 with uncommenting CRIUS_SE board and everything works on the GUI (including ACC) besides the gyros - all 3 gyro axis are at constnt 0,0,0. Can you advise if i need to flash this board as a different board type or something? Or what am i missing ...

i3dm

it was the mag indeed. board was moved further away fron the wiring and RTH works better now.

anyone knows how to enable autoland in MWii 2.2?

i3dm

Hello guys,

i have seen videos of MultiWii 2.2 performing RTH + auto land, which is really nice, but i dont hav ean option for auto land on my flight mode menu in the GUI - how can i enable aito land on 2.2?

thanks.

i3dm

very nice job!
im going to do the same and would like some info:
1. are both mag and GPS connected to same I2C port?
2. why did you have to rewire the pins for the GPS?
3. what changes did you have to do in the software to define the external mag?

thanks.

i3dm

One more thing need to be done is to cut Sj2 and Sj3 jumper pads. Can you please post some pics of the mod ? Here are my picture. You need to cut between mid pad and the right one on sj2 and sj3. Be very careful. And as JDD posted for other boards like from Hobbyking(not all in the program listing)...

i3dm

Hi, had a nice calm day yesterday, so I tested RTH and PH. I configued the Aux switches to set PH with Baro and Mag mode and the copter stood nailed to the sky for 5 minutes only drifting in a radius of 2m, I had time for a chat with a pedestrian and getting a soda out of the car without touching m...

i3dm

Hello guys,

where can i learn how to install an external mag (magnometer) on the MultiWii PRO board (red board from hobbyking)?

i already got the mag module from Ebay in hand.

thanks.

i3dm

since im using the I2C-GPS-NAV board, i dont need to change the voltage level right ? You have to change levels between GPS module (3.3V) and I2C-GPS-NAV board (5V), but then you connect I2C-GPS-NAV board to FC directly over 5V I2C. Roman are you sure about this? i see msot people are using the GPS...

i3dm

Thank you Roman, your reply is very helpful! This is the GPS i ordered: m once i get it i will connect it to Ucenter and configure to 115200 Baud and 5hz. next i will flash my I2C-GPS board - is V2.2 Beta1 r62 stable? everything else is clear. just to make sure - the I2C-GPS board is 5V I2C right (...

i3dm

did i get this correctly? in order to use my Ublox Neo6M GPS module on MultiwiiSE board with V2.2 FW i need to: 1. configure the Ublox GPS to 115200 and 5Hz. 2. disable GPS filtering in code. 3. connect GPS module to GPS-I2C-NAV board. 4. solder other side of NAV board wiring to appropriate points ...

i3dm

Hi, I want to use both GUI & GPS, so the only solution with Crius SE is soldering an output port for I2C, and no need to use FC I2C-GPS NAV Module. Can somebody confirm that? Is sb using that method successfully? Thanks! you need to solder I2C wires and then you need to use I2C GPS module. If y...

i3dm

i see - thanks for the tip.
im also using MAG in GPS hold and dont see any problems - so why is it only happening in RTH?

i3dm

Roman, thanks for your reply.
im afraid i dont have the programming knowledge to get this to work, i was just curious why people use the TTL output converted to I2C when an I2C output is available.
perhaps its a driver issue indeed

i3dm

timecop wrote:Yes.
Note: you didn't specify whether you wanted it to work or not.

LOL, you cracked me up!

i would like it to work.

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