The MultiWii PRO is a gyro/accelerometer based flight controller that is loaded with features. This version of the MultiWii supports direct connection of a GPS module (package includes MTK 3329 GPS module) allowing for ultra-precise positioning functionality. With expandability options and full programmability, this device can control just about any type of aircraft. This is the ideal flight controller for your multi-rotor aircraft.
Features: (MultiWii PRO) • SMD component design with Atmega2560 • ITG3205 Triple Axis Gyro • BMA180 Accelerometer • BMP085 Barometer • HMC5883L Magnetometer • Servo output for camera pitch and roll control • Supports direct connection of GPS module (MTK 3329 GPS module included) • On-board USB connection for programming
(MTK 3329 GPS Module) • Based on MediaTek Single Chip Architecture. • L1 Frequency, C/A code, 66 channels • High Sensitivity, Up to -165dBm tracking, providing superior urban performance • DGPS(WAAS, EGNOS, MSAS) support (optional by firmware) • USB/UART Interface • Supports AGPS function (Offline mode: EPO valid up to 14 days)
Specs: (MultiWii PRO) Mounting: Standard Mk style mounting holes 45mm X 45mm Dimensions: 70x50x12mm Weight: 16g
(MTK 3329 GPS module) Position Accuracy: < 3m CEP (50%) without SA (horizontal) Cold Start: under 35 seconds (Typical) Warm Start: under 34 seconds (Typical) Hot Start: under 1 second (Typical) Power Consumption: 48mA @ acquisition, 37mA @ tracking Shut-down current consumption: 15uA, typical Dimensions: 30x26x7mm Weight: 8g
*Note: See instructions on how to enable GPS function located under the "Files" tab.
Package content: MultiWii PRO FC x 1 MTK 3329 GPS Module x 1 GPS module connection leads x 1 Main board connection leads x 1 USB connection cable x 1
Multiwii Pro board will noT hover. Have set uP a jig and the unit tilts heavily to rear right motor. can correct by putting weight on opposite leg. using trim to correct means a massive move which affects how the craft corrects after roll / pitch manoeuvre. Any ideas
Have you calibrated the ACCs and Mag correctly..... have you adjusted any PIDs....... have you got the correct GUI for the sketch your running..... I am asking these Qs as your a one pointer meaning maybe your a beginner.... you shouldnt have to add weight to the copter to make it hover correctly.
Also, After you do the things above, don't forget to set the flight mode to HORIZON using the GUI. It defaults to ACRO which is not stable. You can do that by selecting all three switches for horizon on one of the AUX channels.
Flying in Acro mode, Accel and Gyros not properly calibrated and frame CG not centered. I wonder what happens when the weight is removed ... would the copter flip? Hmmmm that points to a different challenge.
Having problems with the mkt 3329 gps module. Connected as per instructions (rx to tx etc), modified the sketch and included declination figure. getting green GPS button in centre of GUI screen but not getting satellites, no led light on the unit and no flashing pkt on GUI screen left bottom
Steve the MTK GPS only really works outdoors....If you have NO red LED on the unit it means that you have either A - not connected the power to it correctly or B - the unit is faulty. A lot of the time the supplier does not follow the red is power, black is ground so please double check your connections. Failing that please check the pins with a multi-meter to ensure you have power to the pins, failing that either bin it and get a UBLOX for $20 which is a far superior unit or contact HK for a replacement.
Sharon the hold for this board is really quite good. A few factors have to be met to acheive this. Correct mag declinations for your current location entered into sketch is a must, a solid calibration of the ACC and MAG before flight as well as a close to perfect balancing of whole craft (COG). And finally a solid satalite lock. This where the MTK3329 does not do this board justice. The little NEO6 UBLOX GPS unit sold here at HK is a solid replacement for $20.00,,,cant beat it. Tripples your accuracy. Wind, COG, and mag-dec very important. Have plaenty experiance with this board and a freind has been playing around with the NAZI version and I like the hold it has as well. The NAZI board also seems to fly well too, but alittle spongy to me in comparison to the MWFCB. Thats just my opinion. Hope this helps.
It is possible to put together a multirotor using gyros and motors ... I've seen some early prototypes and they flew ... but with a lot of manual intervention. If you want to fly something close to a multitotor without the programming complexity ... look to fly a helicopter ... those can fly without controllers. Start with a 450 ... anything smaller is more difficult to set up and fly.
there is no EASY way, although solutions have been found involving many servos, pulleys and belts, etc. I suppose you could program a good transmitter to send something like the right signals to the motors, but you would have no stabilization at all. A flight controller is really a simple and elegant solution to a very difficult problem: doing five things at once without making a mistake.
Once upon a time, somebody had the same idea ... then that person thought the gyro sensors on a popular game controller could be used ... produced some rough code and it worked ! Multiwii was born ... Multicopter with Multiwii sensors ...
Great unit, with all the features you need for your MC. And the price is awsome, so normally, you cannot make a mistke on buying this unit.If you buy this features in europe, you will pay 3 times as much or more. For the HK price, you get at least the gps module ( sometimes ) but not incluiding the board, wich has a big and powerfull processor also. So another time, where HK makes our hobby affordable. This is what the MC-Flyers need to upgrade their machines.
42 comments. Reply..
Received the board today from HobbyKing .
After reading about all the broken Micro USB connectors on other FC like the Crius AIOP , I had a good look at the USB connector BEFORE connecting anything.
The micro USB connector is soldered to the board at the rear corners and also has 2 tabs half way down the sides.
Close inspection reveals that it does NOT have a lot of solder to hold it in place and YES it is likely to break off without some extra solder.
The side tabs do not appear to have been well soldered, my guess, surface mount automated soldering has not applied sufficient heat to get the solder flowing well around the tabs which are part of the larger metal connector shell, using a fine tipped soldering iron, care is required specially on the side near the pin headers, re soldered the metal tabs and also the rear corners of the connector, I don't think it will come off now.
Do keep in mind that is a very small connector and the cable can be used to apply sufficient leverage to rip it clean off the board, no amount of extra solder will prevent that, so be real careful not to apply sideways forces to the cable when plugged into the board.
The quality of the board, the soldering of all the other components, I can't fault it, all looks excellent.
Lots of information now in the files tab for the product at HobbyKing.
I connected the GPS to Serial 2, and the flashing LED