Search found 286 matches

by kos
Sat Mar 24, 2012 6:30 pm
Forum: Getting Started - MultiWii config and setup
Topic: RX problems
Replies: 3
Views: 748

Re: RX problems

swap the yaw and pitch imput with inputs known to work one your board .. it will help determining the connection issue .

is this for a standard pulse width transmitter or a sbus one ?
by kos
Sat Mar 24, 2012 6:27 pm
Forum: Software development
Topic: A very peculiar problem
Replies: 12
Views: 1264

Re: A very peculiar problem

are you in level mode ? looks like your quad just want to level ..

add props and hold firmly the quad .. then by adding a little throttle , you will see what the motor want to do

do not exptect too much from bluetooth .. so little range , so little power and so much noise , it is not reliable.
by kos
Mon Mar 19, 2012 9:43 am
Forum: Software development
Topic: [bug] I2c GPS
Replies: 2
Views: 555

Re: [bug] I2c GPS

hum ... if your statement is true , then I should find a line of code checking for i2c_errors_count or an equivalent block. but there is no such line in the code .

mwc will not arm because of waitTransmissionI2C() , but this is a side effect and not an expected behaviour , we should no rely on bug
by kos
Mon Mar 19, 2012 8:51 am
Forum: Software development
Topic: GPS integration
Replies: 1724
Views: 486214

Re: GPS integration

you have I2C errors ! your I2C link with the I2C GPS is not working. One reason is perhaps your I2C speed. If it's not 400Hz you need to change the speed in the file twi.h to #ifndef TWI_FREQ #define TWI_FREQ 100000L #endif and GGA, GSA, VTG ...?? Aclosed someone has of you as a circuit diagram of ...
by kos
Mon Mar 19, 2012 8:43 am
Forum: Software development
Topic: [bug] I2c GPS
Replies: 2
Views: 555

[bug] I2c GPS

.. if no i2c gps is connected or if the i2c gps get disconnect : mwc stop working .

step to reproduce :

- enable i2c gps with define
- disconnect your i2c gps or turn it off or do not connect anything to the i2c bus
- start mwc
- mwc will not arm
by kos
Sun Mar 18, 2012 11:06 pm
Forum: Shields, boards and sensors
Topic: Connecting a WM+ to an Arduino Mega
Replies: 4
Views: 758

Re: Connecting a WM+ to an Arduino Mega

Fubar123 wrote:Does anybody know how to connect a WM+ to an Arduino Mega ?



http://www.multiwii.com/connecting-elements

http://arduino.cc/en/Main/ArduinoBoardMega


i2c

SDA digitale 20
SCL digitale 21
by kos
Sun Mar 18, 2012 10:13 pm
Forum: Getting Started - MultiWii config and setup
Topic: Is VTail okay for starters?
Replies: 29
Views: 4288

Re: Is VTail okay for starters?

.. a good starter craft is a craft that you can crash without being sorry.

v-tail are generlay speeking more difficulte to balance (center of gravity not being necessarily the center of the quad)
by kos
Sun Mar 18, 2012 3:47 pm
Forum: Connecting elements
Topic: Linux Help
Replies: 4
Views: 2301

Re: Linux Help

100% linux supported ..

use the commande chmod +x ..

chmod +x MultiWiiConf_2_0_preversion2 ; ./MultiWiiConf_2_0_preversion2


https://www.google.fr/search?q=chmod


tss .. and you need a java jre ..
by kos
Fri Mar 16, 2012 1:09 am
Forum: Software development
Topic: GPS integration
Replies: 1724
Views: 486214

Re: GPS integration

make some datafusion of the estimated position, velocity and error of the INS and the GNSS, if not done already. In other words, when the GNSS position jumps but the INS doesn't recognize any movement in X and Y, why should it move to the newer position if the actual error is small? Kind regards, w...
by kos
Thu Mar 15, 2012 11:31 pm
Forum: Software development
Topic: MultiWii 2.0 is coming
Replies: 256
Views: 58061

Re: MultiWii 2.0 is coming

Gaijin wrote:Hex6X Mode in 2.0 Pre2 seems to have the pwm outputs on D5 & D6 reversed, the esc's go straight to the setup tones during power up, 1.9 is a-okay.


hardawre is mega ? proMini ?
by kos
Thu Mar 15, 2012 11:05 pm
Forum: General discussions
Topic: Front Right motor problem on Hexa
Replies: 22
Views: 1808

Re: Failsafe problem ?

I've connected Copter to my PC and something happened : ESC reinitialization like i connect Lipo !!! I see nothing special in the GUI. To see radio output in GUI, i move Ail and Elv stick. Somethnig else happened : I could arm and disarm copter with Ail stick like with Rud stick !!! I'm lost now......
by kos
Wed Mar 14, 2012 9:41 pm
Forum: Software development
Topic: baro/sonar automatic landing failsafe
Replies: 15
Views: 5306

Re: baro/sonar automatic landing failover motor calibration

... i bet we can deduce the value

no more change in the code upon battery size or payload changes ;)
by kos
Wed Mar 14, 2012 6:08 pm
Forum: Software development
Topic: baro/sonar automatic landing failsafe
Replies: 15
Views: 5306

baro/sonar automatic landing failsafe

hello,

is there an autolanding feature ? is this planned ?

also using baro/sonar , we can deduce the rpm to achieve hovering and feed the dynThrPID range accordingl,kind of inflight motor range calibration , could also provide a smother range near the deduced hovering rpm ...
by kos
Wed Mar 14, 2012 5:54 pm
Forum: Software development
Topic: dynThrPID and MIDRC
Replies: 1
Views: 730

dynThrPID and MIDRC

//PITCH & ROLL only dynamic PID adjustemnt, depending on throttle value if (rcData[THROTTLE]<1500) prop2 = 100; else if (rcData[THROTTLE]<2000) prop2 = 100 - (uint16_t)dynThrPID*(rcData[THROTTLE]-1500)/500; else prop2 = 100 - dynThrPID; should use #define MIDRC 1500 or something like #define HO...
by kos
Wed Mar 14, 2012 12:30 pm
Forum: Ideas
Topic: GUI: sensor status ON/OFF column superfluous now? - resolved
Replies: 15
Views: 1675

Re: GUI: sensor status ON/OFF column superfluous now? - reso

M contains the version number .. public DataMwiiConf(List<Integer> bytBuffer2) throws bufferErrorException { super(); version = ( bytBuffer2.get(p++).intValue() & 0xff); switch (version) { case 201: // new protocol break; default: // old impl break; }
by kos
Wed Mar 14, 2012 3:59 am
Forum: Getting Started - MultiWii config and setup
Topic: Compile Problems and code cut down guidance
Replies: 2
Views: 672

Re: Compile Problems and code cut down guidance

Multiwii 1.9 --> use arduino ide 023
Multiwii 2.0 -> use arduino ide 1.0

minimal code size under 16ko no need to cut down ... please have a look to how the config file work [1]


are you running 8mhz ?

1 : http://gcc.gnu.org/onlinedocs/cpp/Defined.html
by kos
Tue Mar 13, 2012 9:16 pm
Forum: Software development
Topic: Serial Send GPS coordinates
Replies: 4
Views: 626

Re: Serial Send GPS coordinates

Alexinparis wrote:For which purpose ?


proxying data to mavlink ..
by kos
Tue Mar 13, 2012 6:59 pm
Forum: Software development
Topic: MultiWii 2.0 is coming
Replies: 256
Views: 58061

Re: MultiWii 2.0 is coming

patch against 2.0_pre2 for 8mhz support .. download/file.php?id=907
by kos
Tue Mar 13, 2012 6:54 pm
Forum: Software development
Topic: MWC on 8MHz
Replies: 16
Views: 6868

Re: MWC on 8MHz

hi , some additional changes in the code , now you can upload to a 8mhz board without any change in the config file #if defined(PROMINI) #if (F_CPU > 8000000) #if (NUMBER_MOTOR > 0) blablabla ... edit : delete "MultiWii_2_0_preversion3.zip"
by kos
Sun Mar 11, 2012 4:20 pm
Forum: MultiWii tweaking - flying experience
Topic: Quadcopter crash in stable mode, ver 1.7..
Replies: 8
Views: 1712

Re: Quadcopter crash in stable mode, ver 1.7..

can be wire or a deffective connetors .. when crash happens ..
by kos
Sun Mar 11, 2012 2:51 pm
Forum: Software development
Topic: Missing ; after macro, other avr-isms
Replies: 20
Views: 1622

Re: Missing ; after macro, other avr-isms

yeah .. a new bug since r168 ..
by kos
Sun Mar 11, 2012 10:51 am
Forum: Getting Started - MultiWii config and setup
Topic: Motor power in relation to copter weight
Replies: 8
Views: 1554

Re: Motor power in relation to copter weight

http://en.wikipedia.org/wiki/PID_controller

A high proportional gain results in a large change in the output for a given change in the error... for a multicopter , this is a large change of rpm.
by kos
Sun Mar 11, 2012 1:50 am
Forum: Software development
Topic: Chinese 'Rabbit' FC uses MultiWii code, no credit given
Replies: 59
Views: 20580

Re: Chinese 'Rabbit' FC uses MultiWii code, no credit given

something like : copyright claims are not born equal ..
by kos
Thu Mar 08, 2012 3:56 pm
Forum: Software development
Topic: MWC on 8MHz
Replies: 16
Views: 6868

Re: MWC on 8MHz

The task is to make work the core of the mwc on a 8MHz 3.3V (wearable) machine. I don't want to hear it's impossible [..] 168-10MU, single cell lipo power, requirements I can't change. Am I wrong and is this possible ? - software changes: this is the way I want to go... how hard do you see it? Anyt...
by kos
Thu Mar 08, 2012 3:01 pm
Forum: General discussions
Topic: the noticeable advantages of a STM32 MWC?
Replies: 6
Views: 1275

Re: the noticeable advantages of a STM32 MWC?

6x16 bit timer and pwm = more motor without software task .. we are talking about STM32F103 ?
by kos
Thu Mar 08, 2012 2:13 pm
Forum: General discussions
Topic: the noticeable advantages of a STM32 MWC?
Replies: 6
Views: 1275

Re: the noticeable advantages of a STM32 MWC?

priceless ... the difference is priceless :)
by kos
Thu Mar 08, 2012 1:50 pm
Forum: Pictures & Videos
Topic: Multiwii ATmega328p 8Mhz / 3.3v - 2.0_pr1
Replies: 0
Views: 994

Multiwii ATmega328p 8Mhz / 3.3v - 2.0_pr1

i think this is the first flight of multiwii and a atmega 328p@8mhz ..

And because "nous le valons bien" the quad is build with original nintendo parts, like a real multiwii


https://vimeo.com/37910708

best regards

:ugeek:

more about the 8mhz -> viewtopic.php?f=8&t=1236
by kos
Thu Mar 08, 2012 1:45 pm
Forum: Software development
Topic: MultiWii 2.0 is coming
Replies: 256
Views: 58061

Re: MultiWii 2.0 is coming

ATmega 328p 8Mhz / 3.3v quad is flying with 2.0_pre1

contrib : viewtopic.php?f=8&t=1236
by kos
Wed Mar 07, 2012 8:58 pm
Forum: Software development
Topic: MWC on 8MHz
Replies: 16
Views: 6868

Re: MWC on 8MHz

it is flying ... mutliwii with 328p @ 8mhz 3.3v many thanks to the output rewrite . I had a hard time questioning the analogWrite function . as i am unable to commit, here are the changes: Sensors : the F_CPU macro that was not used for i2c ### Eclipse Workspace Patch 1.0 #P trunk Index: MultiWii_sh...
by kos
Wed Mar 07, 2012 6:18 pm
Forum: Software development
Topic: MultiWii 2.0 is coming
Replies: 256
Views: 58061

Re: MultiWii 2.0 is coming

Better via gui configuration? Good luck. Last time I asked for basic things like camera pitch/roll proportional to be configured via GUI, I was laughed at. Because surely, anyone who wants to adjust gimbal gain is just DYING to recompile + reupload after changing one character. Amirite? ... and wha...
by kos
Sun Mar 04, 2012 8:21 am
Forum: General discussions
Topic: Building a swarm of quads
Replies: 1
Views: 524

Re: Building a swarm of quads

short answer visual control by external software ... watch for the high speed camera in the lab .. kinetc appears in the video , opencv might be useful

an embeded solutions might be short of http://hal.inria.fr/docs/00/59/82/55/PDF/paper07.pdf

a cheap embeded hardware solutions might come with http://www.raspberrypi.org/
by kos
Sat Mar 03, 2012 7:56 pm
Forum: General discussions
Topic: are counter rotating props mandatory ?
Replies: 1
Views: 422

are counter rotating props mandatory ?

Hi,

are counter rotating props mandatory ?
is there a general guidline for offset thrust by angling the motor and what is this minimal motors count ?

thanks in advance for any hints

http://fpvlab.com/forums/showthread.php ... ting-props

viewtopic.php?f=16&t=1095
by kos
Wed Feb 29, 2012 4:00 am
Forum: Ideas
Topic: Tracking people e.g. Long-boarder or cyclists
Replies: 1
Views: 491

Re: Tracking people e.g. Long-boarder or cyclists

you might want to avoid trees ... race tracks are not always free of hazardous areas

http://www.youtube.com/watch?v=j0p1jfWX01A

this require something like open cv and a litle more horspower than an single arduino
by kos
Tue Feb 28, 2012 8:42 pm
Forum: General discussions
Topic: Controls too sensitive
Replies: 4
Views: 2337

Re: Controls too sensitive

look for RC rate and RC expo in the gui

http://www.multiwii.com/software
by kos
Tue Feb 21, 2012 5:32 am
Forum: Frames
Topic: Cad Designed Tri-Copter
Replies: 11
Views: 3899

Re: Cad Designed Tri-Copter

hi,

what is the exact mouting assembly between the motor plates and the bones ? is it machined to match the inside curve of the carbon boom ?

best regards
:)