MultiWii

Arakon

When GPS is activated in the config, it should always listen for GPS on the serial port. The GPS data is always recorded by the FC, no matter if GPS modes are active or not.

Arakon

You either set it up using an I2C display attached to the flight controller, or you do it blindly.. i.e. on another MWii FC with more serial ports, adjust your end points on the transmitter there.
The 328p boards are highly limited, if you insist on using them, you're stuck with some inconveniences.

Arakon

Ah, so you mean a servo gimbal.. you should specify that. There are camera tilt/camera pitch pins on the multiwii pro already, you just have to activate them in the config.h (look at the cam stab options).

Arakon

That's what the ONLYARMWHENFLAT option is for. It won't arm if the copter is tilted over 30°.

Arakon

What would be the point of the extra arduino? You'll still need motor drivers. You'll be easier off using a 20$ controller off ebay, or building your own standalone controller (aside from the motor drivers, you'll just need an MPU-6050, which is like 5$).

Arakon

Your atmega may be missing the bootloader for some reason. You can reflash it in arduino, but you'll need an ICSP-capable programmer or another arduino (i.e. Nano or Pro Mini with FTDI).

Arakon

I actually prefer arming with a switch, that way my transmitter can display armed/unarmed status and even warn me if I am set to armed when I switch on my transmitter.

Arakon

This board already has its pullpups and should work as-is.

Arakon

There's actually no Spektrum sbus, that's something that Hobbyking cooked up. But yes, you can hook up an orangerx SBUS-capable receiver just as if it was Futaba.

Arakon

That's why you start out slow.. don't move it far away from you until you get a feeling for the directions. Small stick movements, unless you are racing, there's no need to ever push the stick far into one direction.

Arakon

Any atmega2560 based board will do that.. they have 4 serial ports.

Arakon

Generally, using an onboard mag means that the mag sensor is pretty close to the power wiring. The power wiring creates a magnetic field, which will confuse the mag, sometimes completely. The more throttle, the stronger the interference.. which is why you see it rotate on takeoff. And honestly, ther...

Arakon

CPPM and bluetooth, yes. sbus and bluetooth, no.
You only have one serial port available.

Arakon

Are you flying with mag enabled? If so, simple test.. turn it off and see if it still happens.

Arakon

As far as I know, you will have to change the config each time and reflash.

Arakon

Actually, the config is correct for that sensor.
"Chinese 6 DOF with MPU6050, LLC" in the config, which is exactly what it is, and works like that for me.

Arakon

First of all, get the current version of multiwii. 2.1 is ages old and if the GUI is the 2.3 version, they won't work correctly together.

Arakon

What's the green wire to INT for? That shouldn't be needed.

Arakon

You may have a defective sensor then.
Given that SCA is actually SCL and not XDA.

Arakon

Preferably in a straight line.
Also, you absolutely have to cover the baro with foam to protect it from prop wash and light.. otherwise baro mode will go completely nuts.
Check if you have vibrations when the motors are running fast.

Arakon

Yeah.. Winding the antenna around like that is an awesome way to cause all kinds of havoc. You should seriously consider getting a 2.4ghz transmitter.

Arakon

What motors and what is the total weight of the quad? Maybe it's seriously overpowered.

Did you balance motors and propellers? You may have strong vibrations.

Arakon

Did you also calibrate the ESCs properly?

Arakon

First of all, why are you using 2.2 and not 2.3?
Second, did you calibrate the ACC? Unless that is calibrated, you can not arm.

Arakon

Not a problem then, I didn't realize it would be more complicated than just modifying the output pins in the code you posted.
I can use the servo outputs, but someone else with the same issue asked about this on another forum, and they have the servo outputs in use for a gimbal.

Arakon

Could you also please post the code to use unused motor output pins? Thank you.

Arakon

Search for "extended aux states". However, a 3 position switch can't physically have more than those 3, so you'll have to replace it.

Arakon

I didn't have to make any software changes and it worked right away. Both are hooked up to the I2C port, and both use the same address, it doesn't matter if it's on the board directly or hooked up with wires. So unless you have issues, try without changing the software first.

Arakon

Exactly.

Arakon

No, you have to cut the traces of the jumpers pictured above. You can't disable it in software, since you'd automatically disable an external compass too.. they use the same address.

Arakon

Once you disable the onboard compass, you simply hook up the external compass to i2c.. no other changes needed.

Arakon

Multiwii already has a basic follow me function when used with the latest nav beta and multiwii ezgui on Android. Don't expect too much, though.. Bluetooth has very limited range afterall.

Arakon

By swapping back and forth. Set things up in the GUI, once all settings are made, plug in the sat.

Arakon

The GPS itself will try to get satellites no matter if the serial connection is working or not. And yes, if you have i2C GPS active, the serial GPS will not function.

Arakon

Did you do the ACC calibration? Did you actually arm before trying to start the motors?

Arakon

I just got my Neo 7M module today (just the ublox chip, replaced it directly on my 6M gps board and it works flawlessly). However, I got the same issue now.. I can't figure out how to edit the preset data in gps.cpp. Ideas/Documentation would be nice. Edit: I just commented the 5hz line out and it s...

Arakon

Yaw isn't the issue, ALL values have to be at 1500 when centered.

Arakon

Exporting the config in u-center and pasting the contents into gps.cpp might work there.

Arakon

The 6m can't do 10Hz. If you set it to 10Hz, it just sends the same position twice.

Arakon

I thought I had my quad set up pretty well, but when I went on a hill in some medium wind today, I was proven wrong. I get quite some wobbling and you can hear the motors correcting constantly. This is a crius AIO Pro with Horizon mode active. You can hear it pretty well here: m What PID values shou...

Arakon

Of course, I was assuming that you had the receiver wired up fully.

Arakon

Assign i.e. high to them. Flick the switch to high and they will be active. Switch to low and they will be disabled and in acro mode.

Arakon

You could set arm to all 3 states of an aux switch. But why would you want to do something like that? It's a safety feature for good reason.

Arakon

Seriously, if you have no experience with multirotors, don't start with something like this. You WILL crash, especially in the beginning, and you don't want to blow 300$ every time it comes down. Build a cheap quad to practice first. As for following the transmitter, that isn't possible. The transmi...

Arakon

That code is conflicting with the navigation versions of multiwii.. 215 is already used.

#define MSP_SET_NAV_CONFIG 215 //in message Sets nav config parameters - write to the eeprom

Arakon

Any devo compatible receiver.

Arakon

The latest.
And I just saw that you mean you downloaded the multiwii conf.. that's the GUI, not the actual multiwii sketch.

Arakon

The motors are going at different speed because you have the quad pinned down and any adjustments it tries to make are not happening since it is not in the air.
Also, you have bad vibrations and your mag is messed up bigtime.

Arakon

You are supposed to open the multiwii.ino, not the config file. A sketch consists of ALL files, and the .ino tells it what all belongs together.

Arakon

2 things I can think of.
1) You are not actually getting it off the ground. While on the ground, the motors will not act right, because any correction the FC tries to make doesn't happen, since you are still on the ground.
2) You seem to have pretty bad vibrations, that can also mess up the FC.

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