MultiWii

KasparsL

So MEGA boards have several Serial ports. One is used for GPS, one for GUI or OSD or ETC.

It is unclear to me, can i use OSD and GUI at the same time, if Yes then how? I know that i can not program the board with OSD connected. How can I run OSD on one serial port and the GUI on another?

KasparsL

Thank you KasparsL for your input. We are not erasing the memory, we are "clearing" it. as denoted by the name of the Arduino example file, eeprom_clear.ino. It does not erase the epprom, it simply clears, or sets all addresses to 0. Then the OSD code can see that it needs to "reinst...

KasparsL

Why do You guys think, that writing '0' (0x00) to the EEPROM is erasing it??? If the empty erased EEPROM contains "255" (0xFF) at each address!

Actually program memory also is "0xFF" when erased by programmer!

KasparsL

I am running multiwii 2.1 on a Tcopter using the witespy Flip MWC. I have it tuned pretty good. It flies nice and stable. The only issue I haven't been able to fix is that when flying in level mode it is slow to return to level. I can go ahead and level it out with the sticks and it will hold it. O...

KasparsL

I am currently using default internal - I think that is 5V. The cap with 10uF is new to me. Is that from atmel specs?. Arduino uses 100nF on nano. It is from personal experience. For me 10uf was good value . p.s. i have done one project which required oversampling on Atmega - there was better to ha...

KasparsL

Are you sure using Internal voltage refference (1.1V)? Or is it set to VCC? The cap at the Vref should be atleast 10uf and good (ceramic or tantalum).

KasparsL

thanks for the help,, i did the mag calibration, but as you suggested i started the motors and view of multiwiiconf screen. (using BT) the white compass arrow will be stable , but the yellow arrow jumps from north when i throttle up. your comment plz If the arrow is jumping, when changing the throt...

KasparsL

Have you checked the MAG?
1 - Is it calibrated
2 - Does the MAG arrow points in the same direction at any throttle applied? (Armed With Props on, hold it down by hand)
3 - check the "2" for E, W, S, N.

KasparsL

What abaut capacitor at Vref pin of Atmega? Is it there? Maybe try to increase the capacitance of it. and in software it should be set o internal Ref with external cap.

KasparsL

So it is default behaviour in Alt Hold? Anyone know where in the code you change the speed of accent and decent during a Baro Hold? It works a little different - there is a deadband which can be defined, and if increased or decreased the throttle, it will accend or deccend with speed proportional t...

KasparsL

I have noticed one closing bracket, before ''displayCursor();", missing in latest "screen.ino" file (rev: r08b3574de1f5, 12.03.2013). Without it, the code will not compile.

Code: Select all

    MAX7456_WriteString(itoa(temperMAX,screenBuffer,10),MAGD-3);
  }
  displayCursor();
}

KasparsL

Question: What had you installed on them before KVTeam firmware? Cheers, KV The first was Rushduino v2.1 firmware. But as mentioned, I did not realize, that this minimOSD board had bootloader form factory pre-installed. So first time I programmed it with ARVISP programmer - deleting the bootloader ...

KasparsL

We have seen this issue before KasparsL, We always suggest that if you have any issues with settings, or the board was used before, perform an EEPROM Erase, (part of the Arduino examples). the checkEEPROM routine works fine in its original state. as a check, please perform the eeprom erase, then lo...

KasparsL

AndrejLV wrote:
ebourlet wrote:Failsafe descent rate based on barometric pressure sensor based rate of descent rather than preset min throttle + set value.

+1

+1

KasparsL

@ kataventos I have find the problem! The issue is with EEPROM checking. The routine "void checkEEPROM(void)" check first location of EEPROM, if it is 0x00 then it writes defaults to it. BUT the default for empty EEPROM is 0xFF , so it thinks that there are values stored already. So I chan...

KasparsL

OK, I see that the problem is what I was imagining, you cannot reach the EEPROM, now we just need to find out what a f... caused that! Tell me something first of all... you said earlier that you had to burn the bootloader. What happened, why had you to? KV I programmed bootloader again, because at ...

KasparsL

@KasparsL, just for your tests, attached is a working hex file, compiled and tested working, a few minutes ago. note: It has a few simple layout changes as described in my posts above.... KV_Team_OSD_HEX.zip Thanks for the hex! I tried it and it did not work. But after further research i have find ...

KasparsL

@kasparsL, I see on your screen-shot that your ftdi is connected to com9. I had "issues" with SiLabs CP2102 com ports above #7 (Win7 64bit) To change the com port number, in control panel, click on devices, ports: then right click on the com port and then click on advanced. Change port nu...

KasparsL

Hi KasparsL, It sounds like you are not getting proper comunication between the gui and the osd board. lets start by getting some more information. What version of the code are you uploading to the arduino? what version of the gui? when you say it reads back default values, what is being shown? Can...

KasparsL

Hi, you have to follow all steps carefully, to me you are not making the RESET on GUI! This is the only thing that comes to my mind... First reset and then program it, why are you using the USBASP? You should use FTDI, honestly I don´t think you can program it with GUI that way. Your options will p...

KasparsL

Hi, I am struggling to get the v345 fw working. i am compiling with Arduino 1.0.1 and uploading the hex with avr-asp. I do not see anything on screen exept grey background. And the GUI seems not to change anything on the minimOSD board. If I change to minim, hit write, then read - it will show rush...

KasparsL

Hi, I am struggling to get the v345 fw working. i am compiling with Arduino 1.0.1 and uploading the hex with avr-asp. I do not see anything on screen exept grey background. And the GUI seems not to change anything on the minimOSD board. If I change to minim, hit write, then read - it will show rushd...

KasparsL

Hi, I was away for some time, I red thru some posts about possible fix for my or similar issue, but still - is it confirmed /fixed ? Is it included in some dev version? I have landed on a tree last weekend (7m above the ground - climbed up to get it!), because of this tilting, only one prop broken. ...

KasparsL

Anoter question: Altitude hold works good only if activated at hoowering throttle. Isn't it possible to make altitude hold work without that? In failsafe conditions it is a problem, because if for example you were flying in plain acro and then suddenly loose rx and "return to home" with al...

KasparsL

I noticed when ascending or descending.. the quad tends to yaw to a certain deg.. and backward when descending.. so i did a small bench test... video shows that the mag is affected by motors m mag is connected but not turned on.. board. AIOP1.1 motor Turnigy park 300 1080kv bs12A simonk fw 3s batte...

KasparsL

So i should re-bind the FrSky receiver to discard pre-defined failsafe values. Don't forget that if you re-bind the FrSky receiver, on TX signal lost it will output last values! Tu use MultiWii failsafe You need to push the button on receiver, while transmitter is OFF. Then RX will stop outputting ...

KasparsL

Do I need some other files to run KV_Team_OSD_GUI.pde with Processing? I need controlp5 library for sure, what else?

KasparsL

Hmmm, personally, I have always used the default when it comes to the MPU6050_LPF filters, I never had a problem with vibration in that aspect. The things that concerns me is, the D=30, that I believe slows the reaction time of the P value. I have never personally used anything over 23 but again, m...

KasparsL

In the last video, as I remember "P" for roll and pitch was increased to 5.5 and "D" to 30. and "P" for Level was increased to 8. Everything else left default. ( I have tried "harder" pid settings, quad is stable even with P=7 D=30 with no shaking/oscillating ...

KasparsL

I think it is due the "slow" thing in Level or Horizon modes http://www.multiwii.com/forum/viewtopic.php?f=16&t=2536 The return is not crisp as expected.

KasparsL

I tried to draw how it happens (my stick inputs on the bottom of the image mode2) : http://kaspars.id.lv/projects/quad_graph_01.png Interesting thing is that quadcopter "knows" that it is not level (can see on OSD)! Tilting usually happens after a while quad is been powered on ( it is been...

KasparsL

Cephalgie wrote:-use every serial for everything on Mega types

this could be very useful,
at the moment I need to disconnect the OSD every time I want to connect via GUI or upload new firmware.

+ failsafe options in GUI? Like RTH or hold or else.

KasparsL

dougroundup wrote:Maybe calibrate ACC ?

Yes I have calibrated ACC and also end points.
I you have noticed in video it is completley level first 1:50 min (flying in Horizon mode). And actually this tilting can happen also after 10min.

KasparsL

Just had a serious crash because of tilting! http://youtu.be/pwfPgkLNW2Y Ad it is not because of wind. It just tilted! I was flying in horizon mode. After this I have upgraded to dev1317, and was practising flying in acro mode. And actually saw sudden tilting to front (20deg) in acro mode. This was ...

KasparsL

I'm running r1371 now. I haven't found any problems at all so far. The Alt Hold is amazing! Thanks guys. @KasparsL - you really should move up to the newer r1371, then see if you still have the same problems. I had a serious crash http://youtu.be/pwfPgkLNW2Y because tilting issue (broken 3 props, b...

KasparsL

I have a question about VARIO and altitude hold. Maybe I am missing something. If I bring the copter to hoovering state and enable the baro, it will hold it and the vario will work as expected (until battery voltage doesnt drop until certain level). But if I enable the baro at low RPM (below hooveri...

KasparsL

PatrikE wrote:Could it be possible to modify SimonK esc code to work as a BLC?

I was thinking of using some cheap Brushless ESCs - remove the controller chip and use 3 half bridge drivers left. Your idea is even better! If the outputs used to drive the motor are hardware PWM, it is duable!

KasparsL

In your video you are applying an outside force which can complicate the situation, any test of this matter should be done with the copter flying on its own. This is to do the the feedback style control loop that is used. I am not applying any force! I am just holding to not to let it to fly away. ...

KasparsL

Sounds like messed up PIDs. Do you still have control in ACRO mode? Maybe the P value of Level is 0? Try to reset to default values.

KasparsL

Come on - dont tell me, that everybody are PRO pilots and fly using ACRO mode only! Nobody wants to make LEVEL (angle) mode perfect?

KasparsL

I did my first fpv flight with MinimOSD and MWC R13 from NHAdrian and i noticed that OSD is not sensing ARMED state and also has baro vario inversed, when climbing, it shows down arrow and viceversa. So is something changed in Multiwii code since v1247? I did not have reversed Baro and armed was sh...

KasparsL

Is there any solution for that problem ? Because i have the same problem, my copter needs nearly 1 second to get back in level after using Roll or Pith. With Arducopter it returns to level at once. I tried nearly every PID combination and cant fix it. +1 I see the same problem, it kind of slowly fi...

KasparsL

kataventos wrote:http://code.google.com/p/rush-osd-development/wiki/Character_Map_Upload
http://code.google.com/p/rush-osd-devel ... dware_Mods
http://code.google.com/p/rush-osd-devel ... ser_manual

It is getting better and better! Hardware_Mods is very useful for lazy people like me, ho don't want to search the code and after the datasheet for the pin's.
Thanks

KasparsL

My question was how or where do I connect the OSD to the MWii FC, the Crius SE in my case. Isn't it supposed to get all the info, like GPS coordinates and so on, from the FC? How do I interface them? What code has to be changed and where and to what. Which pin on the FC will be used to connect the ...

KasparsL

dramida wrote: Any pdf around?

could not resist to post this http://lmgtfy.com/?q=max7456+pdf

And it is OK to power everything from FTDI or from AVR ISP programmer 5V. Just solder the jumpers.

KasparsL

Just saw this video - plain flying with OSD. http://youtu.be/n3gq8fZpUhM or this one http://youtu.be/4t_d4AonTXY Does this OSD in video has better resolution than minimosd with MAX7456? I like the way the pitch and roll are displayed! Any chance to program it to look like that on minimOSD?

KasparsL

I know what went wrong... I posted one first comment but I forgot something, deleted it making copy and paste of what I have wrote before... that´s it, for youtube is a spam. About what I said... yes, displayed information places are different in narrow and wide, every one of them have a different ...

KasparsL

I am saying that I like the OSD only the menu control response is quite "sensitive". And video was the first flight to check it how everything is working. People like reading posts with pictures and videos You did not answer my question/suggestion, important stuff. (posted on your video) ...

KasparsL

I didn't know that either, I thought its a small bug that gps functions does not turn on in GUI, witch didn't bothered me. Now I am enlightened!

KasparsL

I am saying that I like the OSD

only the menu control response is quite "sensitive". And video was the first flight to check it how everything is working. People like reading posts with pictures and videos

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