multiwii tricopter

[quadcrazy]

hey guys, i just finished my new tricopter build, its a hobbyking turnigy talon v 1.0, im using rc timer 1000kv motors, simonk 30 amp escs and a multiwii lite board. my question concerns the wiring aspect as to the board, reciever, and the servo.can anyone send me a picture or link showing me how to wire the this tricopter? i have it plugged in as follows, motor 1 front left cw pin 11, motor 2 front right ccw pin 10, motor 3 rear boom ccw pin 9. servo is plugged in to pin 3. rudder is plugged in to yaw, throttle roll pitch plugged into throttle ail elev on rx. when i plug in the battery all i have is the left , right action of the yaw servo, board will not arm and i have no motors working, any help would be greatly appreciated, thanks.

[tovrin]

http://multiwii.googlecode.com/svn/trun ... iagram.png

that picture and link should be everything you need ot know for connection.

have you hooked it up to the gui yet? does your transmitter affect everything on the gui as it should? are all your trims centered on 1500, how low do they go, how high do they go? you may need to change that within the sketch, if your TX levels arent where they need to be. (I had to)

how are you arming it? switch? stick positions?
http://multiwii.googlecode.com/svn/bran ... -57721.pdf

hope this helps

[quadcrazy]

thank you for your reply, i now have it all hooked up properly, calibrated the escs, everything fine(i think) in the gui, to arm it i have to go right on the roll stick. so i tried it tonight and just before liftoff the rear servo will tilt all the way left causing it to spin in circles, so i throttle down, try it again, this time the servo tilts right, again causing it to spin in circles. i assume im almost there, just a yaw, servo issue, how do i fix this?

[Hamburger]

Check yaw rx input in gui - invert in tx if neccessary.
Possibly invert servo.orientation in config.h

[PatrikE]

Code: Select all

  /********************************    TRI    *********************************/
    #define YAW_DIRECTION 1
    //#define YAW_DIRECTION -1 // if you want to reverse the yaw correction direction

[quadcrazy]

hey, i have the servo going the right direction, i can make it go left or right on the ground but if i give it enough throttle for liftoff the rear servo will tilt left, sometimes right.when i hook it to the multiwii 2.1 gui,the motors beep like crazy when i give left / right inputs to the yaw servo, also beeps when i get to full throttle, im not sure if i calibrated the acc properly, or the magnetometer, could that be the cause?

[quadcrazy]

also i noticed i have no left / right movement in the gui, only pitch and roll, so i went back in the arduino and noticed i have not uncommented the magnetometer, how do i know which one to uncomment? again, im using a multiwii lite board.

[PatrikE]

If it's this board you mean.
#define CRIUS_LITE // Crius MultiWii Lite
Then it have no MAG on it!

The beeps probably indicates that esc's isn't calibrated.

Test to rotate the copter and feel if it couneract or amplifies your twist.
If it Amplify change YAW_DIRECTION in config.

[quadcrazy]

thank you patrikE, i should have heeded your advice from your previous reply, i just got confused on yaw direction, i was taking that as servo reversal, so i changed yaw direction 1 to yaw direction -1 in the arduino, and it flies, pretty good i must admit, thanks again for your help, and everyone else who replied

[jgeezy]

As far as I can tell I have everything wired properly as well. I am using a turnigy 9x tx and rx. anyone else using this set up? I cant get mine to arm either. When I plug the board into the computer and load up the multiwii config. software, should i be seeing a picture of a quad x or a tricopter down in the bottom right? Mine is showing a quad x even though i uploaded the changes to the config.h file outlined on robson's newbie guide.

Please help! I am so close!

[scrat]

Then you didn't defined the right copter. You must see tricopter in gui.

[jgeezy]

Got all that figured out. It didnt write correctly. The only issue im having now is with the tail servo. On d3 it wont throw to the right only middle amd left to 2000 but it has gyro sensing. On d6 it has full throw both directions but no gyro sensing. Any ideas?

[PatrikE]

It can be something in Eeprom left froma some earlier project.
Run Eeprom clear example in The Arduino Ide.

[jgeezy]

You sir are a gentleman and a scholar. Thank you. It was as simple as that. I racked my brain for hours over this and 10 little lines of code and 15 seconds made all the difference. Thanks again!

[jgeezy]

Getting closer!

Here is what im seeing now. I habe the bluetooth adapter so we sat there and ajusted all the PIDs. Nothing seemed to really do the trick. Any ideas? Its very unstable and wont take off.

https://www.youtube.com/watch?v=MMHwLpURUpA&feature=youtube_gdata_player

[tovrin]

first, are all of your extra sensors turned off (acc, baro, compass, etc the only thing you want on during initial tests is the gyro) the acc wont be configured right initially and will give you grief if your trying to use level mode at this stage.

you have a sensor orientation problem i think, or a motor wired wrong, but this looked like sensor. connect to the gui, and while disarmed move it in hand tipping it left and right (roll it both directions) and make sure the picture of your tri in the gui moves the same direction, then do forward backward (pitch it back and forth), and watch the gui for movement.

next, if everything seems to check out, make sure the props are off, arm it, and at a low throttle, copter in hand, wiggle back forth and make sure the motors respond properly.

umm, report back and let us know what happens.