MultiWii

dramida

About 600m BlueTooth (BT) link: I can go 200m with my android phone and an air BT to which i scrapped off its PCB antenna (serpent like) and soldered a lambda/4 dipole directly on module . If you would do same procedure to ground BT module on a PC, and connect that BT module through a simple USB ext...

dramida

When you move from from point A to point B some intermittent errors will not cause significant problem, just some perturbation. I do believe that it's enough to halt navigation when sat count drops below 5. Hello again Mr. EoBandis. Thanks for your interesting answer about GPS constelation. But fro...

dramida

Great demo Mr. Eos, thank you. You give a new life to MWC. I noticed the commands you can issue on Wingui and i think it would be very useful to have: Loop (n_times) so it can repeat a pattern RoI - set Region of Interest in x/y so copter would always face a part of a map until a next RoI is issued ...

dramida

Hi Noctaro, thank you for appreciations, i am using a gopro3 on a light tricopter (no props in frame) with a brushless gimball stabilisation

all flown fpv.

dramida

I agree with Mr. EosBandi, good point in discontinuing old hardware which take time to debug and add unwanted hardware and software complexity. Also i have a I2C navi board, i never used it after introduction of Atmega328 serial port sharing between GUI and GPS. And then AIOP with 2560 proc came wid...

dramida

Hi, i am using Multiwii with great succes in fpv flying.
here is a sample:

/Mihai

dramida

I had such a bitter experience the few last month with ArduCopter 3.0.1 controller. It has so many bugs that i decided to come back to Multiwii . But the way, here is my last video using Multiwii tricopter : m Adrian, i saw you are also using arducopter, are you happy with it? I really need waypoint...

dramida

I flown ArduCopter 3 quite a few times and i am impressed about results in GPS PH and AutoNavigation accuracy. Those performances were obtained by fussioning X-Y GPS data with X-Y accelerometer data. This strategy for AHRS (Attitude and Heading Reference System) delivers amazing stability to gps noi...

dramida

Hi Adrian, your autoland feature saved my copter and probably the entire video project i was working. Suddenly, while filming on sea-side, flying between 2-4 floors buildings, my old RC remote (Hitec Eclipse) turned off unexpectedly and i was stunned how copter rised over the buildings and came back...

dramida

ok, so die beloved Crius, but what all-in-one hardware with 32 bit proc are there? mass produced with a affordable price?

dramida

good news Mr. Eos.
2 cent ideea:
keep Crius Aiop/328 as sensor interface and use a stm32 for running the main
code.

dramida

Is any controller which integrates such advanced GPS navi? The closest thing to that was arducopter with Mission planner in guided mode.
If you want to position yourself in FPV mode over a certain area 5x5 meters, this task would be imposible with actual MWC code, especially when wind blows.

dramida

Yes, this is exactly what i was thinking. It will help navigate straight even in lateral winds and when entering in hold mode with stick centered, copter will remain just were you left it. In addition to changing PH target, it would be better to use gps navigation routine for guiding the copter. Som...

dramida

you mean some kind of loiter? isn't it already inplemented in the 2.2 code? i thought so: /************************ AP FlightMode **********************************/ /* Temporarily Disables GPS_HOLD_MODE to be able to make it possible to adjust the Hold-position when moving the sticks.*/ #define AP...

dramida

Adrian, your filter has 160Hz cut off frequency, and that won't filter 50 Hz pwm or even the third armonic so the signal passes as a square wave:) Abut RC filter, i use 4.7uF smd capacitor with 100K smd rezistor. It works perfect for FRsky RSSI. It has about 3 second time constant or 0.34 Hz cutoff ...

dramida

Hi Adrian, this should be your next mood for multiwii, its so simple and useful as i couldnt belive i didnt tell this before:

viewtopic.php?f=8&t=3640&p=37056#p37056

See you soon.
/ Mihai

dramida

How about a guided GPS PH mode, that means not to temporary deactivate GPS and switch to angle mode but to leave gps PH enableld and modify target GPS point , as altitude vario does for altitude. In this manner it will be more controlable in windy conditions, i guarantee it will be dynamite! /Mihai ...

dramida

I tested following feature of Multiwii NHA R23 patched like Felixrising suggested (http://www.multiwii.com/forum/viewtopic.php?f=8&t=2965&start=190#p36124) in video below: -Autoland with motor stop -Gps position hold -map navigation with smartphone on ez-gui -GpS return to home (nav speed in...

dramida

I am following this topic and i am glad to see it evolving. From OLRS experience i can tell that 433 Mhz works good outside citys, 437 even better in RO, but i had surprizing low range in the centre of Bucharest, where i lost signal at about 200m even with a Lambda/4 with ground plane antenna with t...

dramida

Hi team, i dd some fantastic photos using MWC 2.2 and KV osd. Thanks for sharing. Pictures on

www.facebook.com/filmare.fotografie.aeriana

Mihai

dramida

Same questions here also , +1. I don't understand the difference between BoxID and BoxName

dramida

Hi Kv_Team.

When can i test another version of KV-osd? Actually i use dev_R345 from google repository.

I have all sensors onboard plus RSSI, Vbat and Curent. I usually fly long distance in fpv so OSD will be tested in real life situations.

dramida

Regarding crash with NHA22, software works but seems the standard FW for ESC's are not responding OK to spikes. I had exactly the same behaviour in MWC dev R1391.
MWC NHA R22 IS WORKING FINE

dramida

I always Tweak PID's in gps ph, even i your previous releases.
Second crash was with baro activated also.
I can confirm that arm box was unchecked. One more observation:All the motors screamed and stalled when crash ocured.

dramida

Today i crashed two times inthe same way: all engines stopped foa a momment in gps ph with baro. I was using MWC NHA R22 on Crius Aiop. The motors stopped ALL with a squiky sound. First time they stopped when i pressed "Write to eeprom " in EZ GUI at PID config regarding GPS PH angle of co...

dramida

I'll test latest NHA release today and make a full featured video.

dramida

MinimOSD 0.345 on long range mission 2200m MWC 2.2 tricopter. I need the fix for HOME arrow Bug. Thanks. m Using FrSky RSSI with LPF filter R=100K, C=4u7. I don't like the latency of RSSI filter, way too smooth to reflect reality and also has abnormal behaviour on lost signal- it jumps to 100% sudde...

dramida

I'll activate RTH when i will notice wrong arrow direction. Until now i observed that when stationary, home arrow is good. Here is MinimOSD V0.345put to the test over the city in a photo shooting FPV session: m I have some doubts about RSSI indicator, some times when i shut down the transmitter, RSS...

dramida

A week ago i saw someone's hexa distroyed because one prop failure. First the hexa started to rotate on yaw uncontrolable but it could still keep level. The rotation actually helps to keep it level. But the pilot was unable to react and land the copter and tried to steer it by leaning. On that point...

dramida

I rewatched the flight and here you can see abnormal behaviour shown on OSD, regarding vertical speed in relation to barometric altitude: m ( from min1.32 on left altitude is rapidly increasing from 133 to 140m but the vertical speed shows 0) m ( from min 1.58 to 2.07 the altitude stays constant but...

dramida

I fley with MinimOSD 345 and i am not happy with Home Arrow... Hi, as I said before the arrow was not good but, I have already fixed it for the next release. KV Thanks alot Kata, this OSD is Awsome! I didn't saw your previous post. You should also double check the vertical speed indicator as i have...

dramida

I fley with MinimOSD 345 and i am not happy with Home Arrow. I took off from gas station near the road. Please observe the offset of the home arow at 4:53. The gas station is in left, near the road and the home arrow points right. This behaviour happen only when moving, if i stand still in PH, the H...

dramida

Moving average is a average of a first-in-first-out buffer, called a vector with n number of terms. For n=2 we have (a+b)/2. For the gyros, 15 means the average of a window of last 15 samples, in which the most distant 5 values are discarded as invalid and the rest of 10 giro samples are added toget...

dramida

I do not see what makes this a 'software development' question? What does rctimer say how to use their hardware? Which part of the wiki page do you not understand? RCtimer, 3DR, Flytron or any other current sensor, is calibrated the same. I din't know there is a wiki page about setting / calibratin...

dramida

I bought a current sensor from RCTimer which integrates also a rezistor divisor for Vbat- battery voltage. I connected Vbat to A0 and current output to A1 (on Crius AIOP with ATMega2560). The voltage works fine on GUI and on OSD. As minimOSD shows also current compsumption indication, i would like t...

dramida

Hi, i flew 3 times, more than 650m each time, something like 700-800-1026m. I noticed the bug second time when returning, i couldn't find the home location based on arrow for the second time, so thirg time i took a sharp look at the area and come back visualy. OK let me have a flight and I will tel...

dramida

I had several FPV long flights with minim OSD and R345 of KV_Team and i found a serious bug which made me lose orientation several previous flights: The Home arrow drifts 45 degrees left off target when starts to move back home from long trips.The change of home is at 3:17 when starting twords home...

dramida

This release with autoland is a must have for fpv! Thanks Adrian! I'll test it on my specially built test quad with crius aiop.I hope i'll post soon a video also.

dramida

About yaw authority: 1- I have to remember that GPS positioning is less than 30% accurate when yawing. This precision when yawing would help to a better aerial panorama function. video with an earlier version- hexacopter m video with mwc 2.1 and tricopter m 2- If you hand launch MWC armed with motor...

dramida

I had several FPV long flights with minim OSD and R345 of KV_Team and i found a serious bug which made me lose orientation several previous flights: The Home arrow drifts 45 degrees left off target when starts to move back home from long trips.The change of home is at 3:17 when starting twords home ...

dramida

I suggest you to try the auto-land feature without sonar in home location only (as we already know the altitude from baro). At about 4-5m height, the descent rate is lowered to 25 cm/s AccZ in conjunction with baro could give you a good indication when to slow down the descend and when to turn off t...

dramida

I am using one of this Crisu AIOP V2 board defined as AIOP V1. It works perfectly.
One thing to mention, the position of ppm sum input is fuzzy, it's not on throttle marked pin but on A8, a little bit translated.
The main difference i see is the 16MB flash memory onboard for use with MegaPirates

dramida

My Crius AIOP tricopter drops when activating alt hold.

http://www.youtube.com/watch?v=61igHwNymK8

I was using latest dev version 1349.
The throttle was in middle position.

dramida

I use only BT devices from RCTimer, here is the pictures where you can see the BT antenna (hacked from frsky 40cm antenna - HK) hanging by landing gear. This gives me a BT range of about 180-200m with a samsung galaxy smartphone. And i bet that if you do the same antenna mods of BT device on ground ...

dramida

Hi Alex, you are right about pids. I usualy increase VelP to 0.2 and PosP to 3 and this give me a better positioning on wind. See this clip m on 3:28 i was doying GPS pos hold and the weather was a little windy. You could test inflight with a BT device and EZ-gui different values. I recommand to do ...

dramida

MinimOSD put to work in a FPV aerial shoting

http://youtu.be/eL7Is3Unz48

Thanks Team!

dramida

In a free world, the goverment shoud be afraind of the people's demands, not vice-versa. Anyway, puting an ID on the OSD is a feature whitch could be useful for professionals.

dramida

......... The reason why I differentiated rising from descending is that copter behaves not the same for rising/descending. ........... Generally speaking, for rising we must have higher gains to follow the AltHold value changing, but if the same would applied in descending would lead to low rpms w...

dramida

it also behave a bit wired on my hexa... ver R17.... when stick is above middle dead band.. it suddenly jump up half meter... (and caused battery alarm)... my quad was using r15 w/o this problem... might be i set too much D for alt hold (D=60) in R 17? (D=60 on quad for r15..working fine...but I wi...

dramida

there are a problem with pid..my pid value stay at 0,000 value only for the roll.. with an another software,i have not this problem could you check into the code Same problem here, i couldn't config I term of the roll, it remains always 0 in EZ-gui after "read". I had to use OSD to tweak ...

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