MultiWii

Arakon

Replaced the motors and it seems to fly okay now.
GLB refunded me 10$, btw.

Arakon

You can find cheap modules containing all 3 of those sensors on one single board on eBay. Just attach that to SPI instead of the old sensors. Also, mwii 2.0 is way, way outdated.

Arakon

She flies.. however, after a few seconds, yaw will start either continue rotating (left) or when yawing right, it will pull hard to the back and crash. Up until then it flies stable.

Arakon

Yep, figured that out literally a minute before your posting. Seems to do the trick.

Arakon

Meh. One motor died on me while trying to finally fly it. On top of that, the voltage connection to the spektrum satellite I am using is apparently so dirty that if you throttle up, the Sat loses connection and the board goes into failsafe. Now to wait for a set of motors again, and figure out how t...

Arakon

Yes, and those are not just defective, they're the wrong part for the job.. only rated for 500 mA and probably the wrong pinout.
The residue is some sort of flux.

Replace them with IRLML2502. Cheap to get off ebay and handle up to 4.2A.

Arakon

Exactly the same here, received a board today too. Everything works fine in the GUI except for the motors.
Edit: Okay, I can't f*n believe it. ALL FOUR FETs are fried out of the box.
Just replaced one, boom, it works.
Edit 2: All four replaced, all four working now.

Arakon

Either you have a strong magnetic field on your Copter near the mag, or you didn't calibrate it properly. I always got exactly that when calibration was wrong or bad.

Arakon

I don't think you can even flash that one over ISP.
Try using the 1.4 beta of MWOSD. 1.3 had some issues writing to the atmega, it may also have issues with the video chip.

Arakon

Did you load a font first from the mwosd folder?
Cause the font you have right now looks very much like the old font of the minimOSD software.

Arakon

You didn't upload the font files.

Arakon

Get a proper transmitter. Bluetooth cuts out after 10-20 meters and your Copter goes out of control and crashes.
Turnigy 9x or something if it needs to be cheap.

Arakon

Known issue. Grab the 1.4 beta off the mwosd page, it will be fixed there.

Arakon

A device only draws as much power as it needs. You can't force-feed it more.

Arakon

The board doesn't care, but the ESCs may get unneccessarily hot.
It only takes 10 seconds each to pull the red wire out of the servo plug and stick some shrinkwrap over it.

Arakon

All of that data should be available via serial port on the telemetry/MSP stream.

Arakon

It's a known issue in mwosd and should be fixed soon according to the github.

Arakon

A CC3D that runs Cleanflight (32bit Mwii port) is only 15 bucks from china these days, I doubt you'll get a nucleo + sensor for that price.. besides, the CC3D is tiny.

Arakon

MIDRC changes the values for ALL channels.
Since you only want to change the THR channel, use the Throttle Mid option in the multiwii GUI. Try i.e. 0.45 there to see if things improve.

Arakon

I'm talking about porting the APM software to APM. Megapirate is nothing but a port of the APM software to non-APM boards.

Arakon

There's no reason why mpng should work with apm, considering it's merely a direct port. No point in porting something that already exists in a better form.

Arakon

Experience from another forum, where someone bought it for his APM and does have horrible offsets.
The metal shield is magnetic.

Arakon

Your throttle stick has to be centered at around 1500, and centered when you switch to althold if you want it to stay at that height. Below 1450 or above 1550, it will go down or up.

Arakon

I assume that the gps is transferred via Rx/Tx and the compass via I2C. Due to the datasheet http://www.u-blox.com/images/downloads/Product_Docs/u-bloxM8_ReceiverDescriptionProtocolSpec_%28UBX-13003221%29_Public.pdf the Neo8 appears to be compatible to the Neo6. Correct on both accounts. That BeSta...

Arakon

You can also apply some expo to the throttle stick on your transmitter to make the center area "bigger", so mid stick is smoother.

Arakon

They're all compatible. On the software side of things, there's no real difference in data from any of the neo modules.

Arakon

Get rid of kv osd, which is no longer developed, and use mwosd. It specifically has a setting for multiwii 2.4.

Arakon

On the FC, it's a diode. Not sure about the receiver. Looks to me like you possibly reversed the polarity or hooked up a wire that carried battery voltage rather than 5v.

Arakon

It's your frame most likely. I had massive issues with the SK450 too (despite balancing motors and props), because the arms are soft enough to put a knot in them without much effort. I put the exact same components on another frame with no changes and it immediately flew awesome.

Arakon

Tricopter motor directions really don't matter, but having the front two go cw and ccw (or ccw and cw) will take out some of the rotational force because they cancel each other out, so the tail doesn't have to lean as far just to maintain a straight hover.

Arakon

You have it set up as a serial PPM receiver, but wired up as a parallel pwm receiver.
Undefine both serial_sum_ppm and ppm_on_throttle and it should work, given that you don't have even more receiver options active.

Arakon

512 means you have 1 g of pull on the Z-axis. If you didn't, you'd start floating away.. gravity is a nice thing to have.

Arakon

Headfree relies entirely on the compass. The compass is highly sensitive to interference from power wiring.. i.e. the ESC/battery wires. In order to prevent this, you'll have to either put the entire flight controller on a tall standoff (not recommended) or install an external compass and put that o...

Arakon

I just got a CC3D set up with cleanflight on a ZMR250 clone. 3S, DYS 1806, BlueSeries 12A with BLHeli 13.1, Oneshot enabled, 5030 props, AUW is 560g. Using the MWii 2.3 PID controller (#3). First outside flight showed three issues: 1) A flip over the roll axis worked very fast and smoothly. I tried ...

Arakon

Did you actually mount the flight controller the right way around? Also check that the escs are plugged into the correct ports.

Arakon

Hook it up to any serial port and define the serial port number used in the config.h. However, the satellites run on 3.3V.. you have to use a 3.3V voltage regulator on the power line, or grab 3.3V from the board somewhere. GND and signal hook up directly. Actually, I just found this: m Should answer...

Arakon

Sounds like you selected the wrong board and chip in arduino.

Arakon

The internal and external compasses use the same i2c address. Only way to disable the internal one is by physically removing the compass or cutting traces.

Arakon

They are talking about an atmega 2560 based board, which has several serial ports, and are saying that you don't need to configure what kind of device is attached.. this doesn't mean you can slap two different devices on a single port.

Arakon

No. You need a direct connection to flash.

Arakon

Nope. One or the other.

Arakon

Get rid of the prop guards, that alone will probably save 80g or so.

Arakon

There's probably close to a hundred different multiwii boards in existance, "red" isn't going to get you any help. At the very least, post a picture of it.

Arakon

Try changing X to -X on the mag line only.

Arakon

You'll have to mess with the #define FORCE_MAG_ORIENTATION(X, Y, Z) setting in the config.

Arakon

And how long did you wait? A cold start on a GPS can require up to 30 minutes to get a fix. Also, chances are you didn't set up the GPS right, with the correct baud rates.

Arakon

The landing is a matter of your own throttle skill. Lower it softly, cut throttle shortly before or after you touch down. Your mag issue is simple.. the power wiring creates a magnetic field. This changes constantly, so the mag constantly sees a rotating heading. The only solution to this is to get ...

Arakon

Multiwii doesn't support more than 8 channels.

Arakon

It's under advanced/model control. Shame about your copter, flying it without skill with something as unreliable and inaccurate as a touchscreen, you'll wreck it in no time.

Arakon

Technically, yes. Practically, this is a really bad idea. The range is very short (worst case with motors running, 5-10 meters), and when you get out of range, the copter will either crash or fly away. Unless you want to start saving up for a completely new copter again, wait till you have a proper ...

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