Search found 166 matches

by LenzGr
Mon May 20, 2013 3:34 pm
Forum: Software development
Topic: Gyro_scale is wrong for MPU6050?
Replies: 36
Views: 9397

Re: Gyro_scale is wrong for MPU6050?

OK, thanks. So the values in _shared are correct, and the ones posted by ovaltineo earlier in this thread were the other way around (and wrong?)
by LenzGr
Mon May 20, 2013 12:22 am
Forum: Software development
Topic: Gyro_scale is wrong for MPU6050?
Replies: 36
Views: 9397

Re: Gyro_scale is wrong for MPU6050?

That is correct, but I would have written it this way coz it's easier to match with the data sheet, and a compile error would alert the user that the GYRO_SCALE is not defined for the sensor: #if defined(MPU6050) #define GYRO_SCALE ((4.0f * PI)/(14.375 * 180.0f * 1000000.0f)) //(MPU6050) #endif #if...
by LenzGr
Tue Apr 23, 2013 10:20 pm
Forum: MultiWii tweaking - flying experience
Topic: flying 3D and doing flips
Replies: 7
Views: 936

Re: flying 3D and doing flips

You need to play with the throttle. If the copter is upside down and you don't reduce the throttle, you are accelerating it towards gravity. What worked for me is to start the flip by giving it more throttle, so it shoots upwards. Then reduce the throttle and and as soon as it has reached the peak a...
by LenzGr
Fri Jan 25, 2013 6:30 pm
Forum: Shields, boards and sensors
Topic: Flyduino Pro Micro + 10DOF IMU GY-86 + Multiplex GPS Modul
Replies: 6
Views: 1629

Re: Flyduino Pro Micro + 10DOF IMU GY-86 + Multiplex GPS Mod

Thanks! I looked at this document and it seems like Multiplex has developed their own communication protocol. So MultiWii does not support this device out of the box, you would have to implement their protocol first. There seems to be an existing Arduino library , but it's certainly not a trivial ta...
by LenzGr
Fri Jan 18, 2013 1:42 pm
Forum: General discussions
Topic: Downloading from Googlecode
Replies: 1
Views: 352

Re: Downloading from Googlecode

Not sure what you are trying to accomplish. Do you want to check out a certain revision of the code via SVN? Maybe this page helps?
by LenzGr
Fri Jan 18, 2013 10:16 am
Forum: General discussions
Topic: MultiwiiGUI slow on blutooth
Replies: 9
Views: 951

Re: MultiwiiGUI slow on blutooth

If the baud rate is the same, I'm afraid I don't have any better clue. I don't use a Mac, but maybe it's how Mac OS communicates with the Bluetooth adapter? Is it an external one, or built-in? What do you mean by "slow"? Is the GUI reacting sluggish/choppy to changes? Is the slowness depen...
by LenzGr
Thu Jan 17, 2013 12:43 pm
Forum: General discussions
Topic: MultiwiiGUI slow on blutooth
Replies: 9
Views: 951

Re: MultiwiiGUI slow on blutooth

Are you using the same baud rate on both connections?
by LenzGr
Wed Jan 16, 2013 9:09 pm
Forum: Boards
Topic: Teensy 3.0 anyone?
Replies: 5
Views: 1903

Re: Teensy 3.0 anyone?

Primarily it's of course "because we can" and the hack value that brings. I think it provides some compelling features at a very reasonable price (compared to Arduino boards): ⋅ more RAM ⋅ higher clock rates ⋅ better floating point performance ⋅ lots...
by LenzGr
Wed Jan 16, 2013 3:48 pm
Forum: Software development
Topic: Software Magnetometer calibration
Replies: 10
Views: 1738

Re: Software Magnetometer calibration

Quadraf wrote:Or you can use MWii-Preflight to do all the settings including mag callibration time up to 60 sec :mrgreen: .
http://code.google.com/p/mwii-preflight/

Holy cow, that is the most overloaded application window I have seen in a while. No offense :)
by LenzGr
Wed Jan 16, 2013 3:43 pm
Forum: Shields, boards and sensors
Topic: Flyduino Pro Micro + 10DOF IMU GY-86 + Multiplex GPS Modul
Replies: 6
Views: 1629

Re: Flyduino Pro Micro + 10DOF IMU GY-86 + Multiplex GPS Mod

Well, the pin assignment and protocol (Serial, I2C or something else) would be the most useful information to begin with. Also the update rate is crucial, 5-10Hz are useful, 1Hz is usually too slow. What I'm unclear about: why this one? Do you already own it? If not, I'd suggest you look into altern...
by LenzGr
Tue Jan 15, 2013 9:01 pm
Forum: Boards
Topic: Teensy 3.0 anyone?
Replies: 5
Views: 1903

Re: Teensy 3.0 anyone?

(replying to myself)

Not based on MultiWii, it seems, but here's a Teensy 3.0 based flight controller: http://forum.pjrc.com/threads/14953-Tee ... controller
by LenzGr
Tue Jan 15, 2013 8:42 pm
Forum: Shields, boards and sensors
Topic: Is compatible the Arduino Due board with MultiWii?
Replies: 3
Views: 631

Re: Is compatible the Arduino Due board with MultiWii?

Ah, awesome! I'll take a look at that. Thanks!
by LenzGr
Tue Jan 15, 2013 8:39 pm
Forum: Shields, boards and sensors
Topic: Flyduino Pro Micro + 10DOF IMU GY-86 + Multiplex GPS Modul
Replies: 6
Views: 1629

Re: Flyduino Pro Micro + 10DOF IMU GY-86 + Multiplex GPS Mod

It's unclear to me what kind of output this device provides. Does it have a serial interface, issuing NMEA sentences?
by LenzGr
Tue Jan 15, 2013 12:09 pm
Forum: Links
Topic: Multi-Rotor Form on G+
Replies: 2
Views: 1638

Re: Multi-Rotor Form on G+

Very cool. Joined!

FWIW, there is one on Facebook, too: https://www.facebook.com/groups/quadrocopters/
by LenzGr
Tue Jan 15, 2013 12:07 pm
Forum: Shields, boards and sensors
Topic: Is compatible the Arduino Due board with MultiWii?
Replies: 3
Views: 631

Re: Is compatible the Arduino Due board with MultiWii?

Not yet, to my knowledge - but patches are welcome :)
I had a similar question about the Teensy 3.0, which is somewhat similar to the Due.
by LenzGr
Thu Jan 10, 2013 12:30 pm
Forum: Boards
Topic: Teensy 3.0 anyone?
Replies: 5
Views: 1903

Teensy 3.0 anyone?

Hi, I recently got myself a Teensy 3.0 board , which claims to be Arduino compatible, but uses an 32 bit ARM Cortex-M4 48 MHz CPU. Considering that it uses the Arduino IDE, libs and toolchain, I wonder if a port is more feasible starting off the mainline MultiWii code base (potentially supporting th...
by LenzGr
Tue Nov 27, 2012 4:37 pm
Forum: Boards
Topic: anykey0x board and MultiWii?
Replies: 1
Views: 608

anykey0x board and MultiWii?

Yet another board that looks interesting: http://www.anykey0x.de/ - has anyone toyed around with it already? I wonder how difficult it would be to port the MultiWii code base to this one...
by LenzGr
Tue Sep 25, 2012 9:27 am
Forum: ESCs, propellers , servos and radios
Topic: Alternative ESC firmware (reflashing)
Replies: 640
Views: 159262

Re: Alternative ESC firmware (reflashing)

zarkon wrote:hey I have the same ESC mind sharing where is the programming pad for it? can't seem to figure it out

There does not seem to be one - you will have to connect to the solder pads of the CPU directly. Check the info and links from this spreadsheet for more info.
by LenzGr
Thu Sep 20, 2012 8:16 am
Forum: Software development
Topic: Altitude Hold improvement solution
Replies: 580
Views: 1442738

Re: Altitude Hold improvement solution

Try to check debug (acc, velocity) values as described some pages ago in two posts... i suppose you have a lot vibrations on your board... which acc and baro? Thanks, I'll look into that. Yes, vibration might be an issue, but wouldn't that primarly affect the accelerometers on the x/y axis?. I'm fl...
by LenzGr
Wed Sep 19, 2012 12:08 pm
Forum: Software development
Topic: Altitude Hold improvement solution
Replies: 580
Views: 1442738

Re: Altitude Hold improvement solution

EDIT - soundtrack changed. should be viewable by all. Well done mahowik et all..... Thanks, now I was able to watch it. Looks good, I haven't reached that level of stability with mahowik's code yet. I will try the ALT PID values you listed at the beginning of the video. Is the I term ("010&quo...
by LenzGr
Wed Sep 19, 2012 10:57 am
Forum: Software development
Topic: Altitude Hold improvement solution
Replies: 580
Views: 1442738

Re: Altitude Hold improvement solution

shikra wrote:http://www.youtube.com/watch?v=PwntTHftI6Q

"This video contains content from EMI, who has blocked it in your country on copyright grounds"

:(
by LenzGr
Wed Sep 19, 2012 9:44 am
Forum: Software development
Topic: Altitude Hold improvement solution
Replies: 580
Views: 1442738

Re: Altitude Hold improvement solution

I did some more testing with mahowik's code today, tweaking the PID values. Getting there, but my current config reacts very aggressively against changes (you can hear the motors revving up and down quickly). There is a noticeable effect, but I'm still struggling to find the optimal values (it still...
by LenzGr
Wed Sep 19, 2012 9:35 am
Forum: Ideas
Topic: wishlist for v2.2 - CLOSED
Replies: 150
Views: 20072

Re: wishlist for v2.2

it will be great to have a reverse fonction for motors..it will be easier to mount his motor without desoldering if it s not in the good direction i don t know if it s possible .. Unfortunately that's not possible. The Firmware just sends a pulse signal to the ESC that defines the speed, not the di...
by LenzGr
Mon Sep 17, 2012 4:03 pm
Forum: Software development
Topic: Altitude Hold improvement solution
Replies: 580
Views: 1442738

Re: Altitude Hold improvement solution

FIY, I made some tests with mahowik's implementation yesterday (added on top of the stock 2.1 release, see my previous post for the patch). So far I could not get it fully stable (slow oscillations), I need to toy around with the PID values some more (using a Flyduino MicroWii with MPU-6050 and MS56...
by LenzGr
Mon Sep 17, 2012 11:24 am
Forum: Software development
Topic: Code Refactoring: Buzzer/LED goes alarm
Replies: 36
Views: 3780

Re: Code Refactoring: Buzzer/LED goes alarm

FWIW, I too would prefer just two warning levels, mimicing what my LiPo buzzer currently provides:

1. a warning that the battery voltage has dropped below a certain level (short beeps/blinks)
2. battery voltage is critically low, land immediately (permanent beep/faster blink frequency?)
by LenzGr
Sun Sep 16, 2012 1:34 pm
Forum: Software development
Topic: Altitude Hold improvement solution
Replies: 580
Views: 1442738

Re: Altitude Hold improvement solution

I've extracted mahovik's changes to IMU.ino (against the 2.1 version in trunk, not the _shared repo) and it compiles. I hope to be able to do some outdoor tests later today, once the wind has calmed down. For what it's worth, here's the diff: [lenz@labtop MultiWii]% bzr diff IMU.ino === modified fil...
by LenzGr
Fri Sep 14, 2012 8:13 pm
Forum: Software development
Topic: Altitude Hold improvement solution
Replies: 580
Views: 1442738

Re: Altitude Hold improvement solution

I also intend to check out this code once I find a minute to merge the changes into my branch and the weather actually allows going outside (it's raining cats & dogs at the moment).

Patience, my young padawan :)
by LenzGr
Wed Sep 12, 2012 11:30 pm
Forum: Ideas
Topic: ESC programming with Spektrum Satellite?
Replies: 9
Views: 1517

Re: ESC programming with Spektrum Satellite?

Hello, the SimonK are of course a great thing. But I have installed on my Little Copter the XP-7A. Have the Sil µC and unfortunately goes no SimonK No worries, there are optimized firmwares for SiLabs-based ESCs as well: m Programming card is also bad because the ESC's are soldered and the Arduino ...
by LenzGr
Wed Sep 12, 2012 10:50 pm
Forum: Software development
Topic: Rushduino OSD - Multiwii based open software osd
Replies: 782
Views: 103180

Re: Rushduino OSD - Multiwii based open software osd

I have see (with my eyes) Johny yesterday. I know he face a lot of proplem in the last couple of month.. Thats sad no matter what the problems are I hope the go away fast, but he can I think say something... or not! See his last post for a possible explanation of his absence. I just hope he'll full...
by LenzGr
Tue Sep 11, 2012 2:48 pm
Forum: Pictures & Videos
Topic: Flyduino MicroWii Maiden flight
Replies: 2
Views: 1281

Re: Flyduino MicroWii Maiden flight

nice! those look like the same gemfan props i use, except mine are 11x4.7 and 12x4.7, but i have to guess that mine is significantly heavier than yours with my aluminum frame. Thanks for the kind words! Indeed, these are Gemfan props. Flyduino.net has them in bigger sizes as well. I was flying EPP ...
by LenzGr
Sun Sep 09, 2012 11:24 pm
Forum: Ideas
Topic: ESC programming with Spektrum Satellite?
Replies: 9
Views: 1517

Re: ESC programming with Spektrum Satellite?

I have to agree with ReadError - I flashed my HK SS20 with the SimonK firmware and this made a big difference (less noise, much more agile flight characteristics). No programming card needed.

But if you insist, here is some Arduino code that supposedly allows you to emulate a programming card: http://www.frank-zhao.com/cache/escprog ... rdhack.php
by LenzGr
Sun Sep 09, 2012 11:20 pm
Forum: Pictures & Videos
Topic: Flyduino MicroWii Maiden flight
Replies: 2
Views: 1281

Flyduino MicroWii Maiden flight

This weekend I finished the rebuild of my quadrocopter. It's now equipped with new props (9x4.7 instead of 8x4.5), landing gear and the MicroWii flight controller (all from m), running stock MultiWii 2.1. It flies pretty stable with the stock PID values already: Video: m http://farm9.staticflickr.co...
by LenzGr
Sun Sep 09, 2012 10:25 pm
Forum: Software development
Topic: [PATCH] Add MicroWii support
Replies: 3
Views: 1124

Re: [PATCH] Add MicroWii support

Indeed! Thanks Alex for committing it - I did not notice this from the commit log message.
by LenzGr
Sun Sep 09, 2012 1:48 pm
Forum: Ideas
Topic: ESC programming with Spektrum Satellite?
Replies: 9
Views: 1517

Re: ESC programming with Spektrum Satellite?

Scotch wrote:If I understand correctly, so I can only but prorammieren the gas path.
But I want to change all the settings from the ESC.

I'm confused. What other settings are you referring to? Are you looking into using an Arduino board to replace the programming card?
by LenzGr
Sun Sep 09, 2012 1:40 pm
Forum: Software development
Topic: [PATCH] Add MicroWii support
Replies: 3
Views: 1124

Re: [PATCH] Add MicroWii support

Just wondering: does anyone with commit privileges have an opinion on this patch? I'm happy to adjust it, if anything is wrong/missing.
FWIW, I'm using that board myself, so this change has been tested.
by LenzGr
Fri Sep 07, 2012 12:52 am
Forum: Software development
Topic: [PATCH] Add MicroWii support
Replies: 3
Views: 1124

[PATCH] Add MicroWii support

Hi, while the Flyduino MicroWii board is already supported by enabling individual #defines, there currently is no dedicated #define in config.h for it. I'd appreciate if the following patch could be accepted, to make it somewhat easier for new users to enable it - this patch is against the _shared r...
by LenzGr
Mon Sep 03, 2012 1:57 pm
Forum: Connecting elements
Topic: oled
Replies: 3
Views: 864

Re: oled

I connected mine via I2C: http://farm8.staticflickr.com/7253/7563808670_cd32b0b051_n.jpg Quadrocopter: I²C 0.96" OLED display (128x64) - front http://farm9.staticflickr.com/8019/7563807254_3f13d938fc_n.jpg Quadrocopter: I²C 0.96" OLED display (128x64) - back You need to use the correct int...
by LenzGr
Fri Aug 31, 2012 2:31 pm
Forum: ESCs, propellers , servos and radios
Topic: ESC tuning ?
Replies: 4
Views: 998

Re: ESC tuning ?

The powerup tune played when a motor is connected might also give a hint. Most ESCs with a stock firmware can be programmed with the transmitter directly, too - no need for a programming card.
by LenzGr
Fri Aug 31, 2012 11:46 am
Forum: Ideas
Topic: wishlist for v2.2 - CLOSED
Replies: 150
Views: 20072

Re: wishlist for v2.2

scanman wrote:Why not integrate this as a feature: flick a momentary switch on your transmitter and the quad can do crazy loops. release the switch and it returns stable!
We can call it the #WARTOX option!

Something like this is actually exists and it's merged already: AcroTrainer Mode
by LenzGr
Fri Aug 31, 2012 11:25 am
Forum: General discussions
Topic: Copter tilts to side before starting to fly
Replies: 18
Views: 1724

Re: Copter tilts to side before starting to fly

I looked at yhe pic of your quad you posted and was wondering how you have the props mounted ? The pic looks like they are just pressed on ! Props cannot spin on shaft or you will never get it to fly right ! If you look closely, you will notice the prop savers - black on black is hard to distinguish
by LenzGr
Fri Aug 31, 2012 11:18 am
Forum: General discussions
Topic: [Question] Limp batteries?
Replies: 3
Views: 462

Re: [Question] Limp batteries?

Keep in mind that 39A would be the theoretical maximum, it's unlikely you would reach such a high current drain during normal operations. But yes, a 15C battery might be a bit too "weak" to power this setup. The higher this C level is, the more "responsive" the entire setup becom...
by LenzGr
Tue Aug 14, 2012 11:42 pm
Forum: Ideas
Topic: Binding Spectrum SAT via Mega Board ?
Replies: 2
Views: 773

Re: Binding Spectrum SAT via Mega Board ?

There is an Arduino library for that, but I suspect it would bloat the firmware too much. It's probably easier to upload the binding firmware, perform the bind and then re-flash the board with the MultiWii code. In the end, how often do you need to re-bind your receiver?
by LenzGr
Tue Aug 14, 2012 11:36 pm
Forum: Ideas
Topic: {idea}[hw+sw]possible to use xbee to replace radio?
Replies: 1
Views: 555

Re: {idea}[hw+sw]possible to use xbee to replace radio?

MultiWii already supports remote controlling via a serial signal - look for the RCSERIAL define in config.h. It should be trivial to pipe that serial stream through Xbee. Exchanging more information in a bi-directional fashion probably requires changes to the serial protocol.
by LenzGr
Tue Aug 14, 2012 11:33 pm
Forum: Ideas
Topic: Alternative Buzzer signal generation for Piezo speakers?
Replies: 6
Views: 3800

Re: Alternative Buzzer signal generation for Piezo speakers?

Or with a 555 timer. http://www.kpsec.freeuk.com/555timer.htm#astable Yes, I was thinking about that, too! A small PCB with a piezo and an NE555 plus the analog pieces should make a nice little breakout board. No magnetic field and the power consumption should be fairly low. I wonder if this circui...
by LenzGr
Tue Aug 14, 2012 11:27 pm
Forum: Ideas
Topic: Failsafe and InflightAccCalibration
Replies: 16
Views: 2771

Re: Failsafe and InflightAccCalibration

IMHO The coming home is less dangerous than crash or fast landing at the site of lost control. If the copter climb up to 20-30 meters and start return to home, you have a great chance to quickly restore RC control and manual return to home then land. Only if there are no obstacles between you and t...
by LenzGr
Thu Aug 09, 2012 5:56 pm
Forum: Ideas
Topic: Alternative Buzzer signal generation for Piezo speakers?
Replies: 6
Views: 3800

Re: Alternative Buzzer signal generation for Piezo speakers?

You can use this : https://www.sparkfun.com/products/7950 Actually, this is not a Piezo speaker, it's a regular buzzer with a magnet. What I am envisioning is either driving a pure piezo with a PWM signal on the buzzer pin, or creating a small PCB that contains a piezo speaker and some circuitry to...
by LenzGr
Thu Aug 09, 2012 5:00 pm
Forum: Ideas
Topic: 0.96" SSD1306 128X64 OLED Display Module
Replies: 207
Views: 173736

Re: 0.96" SSD1306 128X64 OLED Display Module

howardhb wrote:http://www.wide.hk/products.php?product=I2C-0.96%22-OLED-display-module-%28-compatible-Arduino-%29
Cheapest OLED deal on the web....shipping takes 4 - 5 weeks though :shock:

Can't confirm this - they shipped mine (to Germany) within ~10 days.
by LenzGr
Fri Jul 20, 2012 2:58 pm
Forum: Ideas
Topic: 0.96" SSD1306 128X64 OLED Display Module
Replies: 207
Views: 173736

Re: 0.96" SSD1306 128X64 OLED Display Module

I have benefited from all the work done to get OLED to work therefore I have drafted a Wiki page for MW OLED. Its based on entries in this thread, cut and paste actually, and includes how to activate it and how to change the logo. Very cool, thanks for summarizing this! I am not a member of Google ...
by LenzGr
Thu Jul 19, 2012 4:39 pm
Forum: Software development
Topic: "Arduino" Pro Micro
Replies: 131
Views: 37361

Re: "Arduino" Pro Micro

FYI, the MicroWii is now available from flyduino.net. Looks great!

Image
by LenzGr
Tue Jul 17, 2012 4:49 pm
Forum: Software development
Topic: playing with acc-z altitude hold
Replies: 44
Views: 7604

Re: playing with acc-z altitude hold

I must admit I too am in the skeptical camp about the benefit of co-mingling the battery voltage with the barometer. These two parameters aren't directly correlated and I concur with dramida that it likely infuses random noise into the PID loop. Shouldn't the combination of ACCZ for quick altitude c...