mobiDrone nano arduino OSD for MultiWii with PID config

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MichalM_sk
Posts: 89
Joined: Wed Jun 15, 2011 5:04 pm
Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

mahowik wrote:
MichalM_sk wrote:Solutions for better visibility in direct sunlight (stronger background)
Image

1. Remove resistor shown in Figure.
2. If it is still weak, change resistor for background with value about 20 ohm.


What is the resistor numbers from scheme here http://www.toptel.sk/multicopter/downlo ... 0_schm.pdf need to be changed/removed?

Also I have found out that when i connect the OSD to the video line, the brightness reduces to 20-30%... So I changed R4 from 100 to 470 ohm to solve this... It works and I hope it's correct. Right?

thx-
Alex


Hi,
you can remove R4 resistor and adjust R3 resistor for background.

Regards
Michal M.

ankimo
Posts: 30
Joined: Fri Jan 20, 2012 7:31 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by ankimo »

MichalM_sk wrote:
ankimo wrote:Pre7(FINAL)Test report

Probably the direction of home is reverse. ;)

http://www.youtube.com/watch?v=y3wfyfLB9Qw

Kazz


I will check this problem.


Are other users OK?
Does my environment have a cause?

Kazz

carlonb
Posts: 210
Joined: Sun Apr 03, 2011 6:29 pm

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by carlonb »

Hi guys,
Sorry for the noob question:
I'm ready to test mobidrone OSD connected to my Hexa with MWii 2.1 but I do not know where to connect and how the serial port to MWii, I need to connect both RX and TX ?
Consider that Iim using Arduino Mega 2560.
Thx in advance, ciao, Carlo

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shikra
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Joined: Wed Mar 30, 2011 7:58 pm

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by shikra »

Is there any option to display debug info on the OSD. For me it would be incredibly usefull to help develop and troubleshoot.

Y.Mita
Posts: 46
Joined: Thu Sep 15, 2011 11:25 pm

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Y.Mita »

ankimo wrote:
MichalM_sk wrote:
ankimo wrote:Pre7(FINAL)Test report

Probably the direction of home is reverse. ;)

http://www.youtube.com/watch?v=y3wfyfLB9Qw

Kazz


I will check this problem.


Are other users OK?
Does my environment have a cause?

Kazz

Same. Sorry, I'm busy now and no time to check source code.

carlonb wrote:Hi guys,
Sorry for the noob question:
I'm ready to test mobidrone OSD connected to my Hexa with MWii 2.1 but I do not know where to connect and how the serial port to MWii, I need to connect both RX and TX ?
Consider that Iim using Arduino Mega 2560.
Thx in advance, ciao, Carlo

Yes, at least you must connect TX and RX and GND to Flyduino's FTDI connector.

shikra wrote:Is there any option to display debug info on the OSD. For me it would be incredibly usefull to help develop and troubleshoot.

I think no such specification now, but I think you can easily modify code and add MSP_DEBUG serial output message and replace GPS coordinates. Let's enjoy open source ! ;)

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shikra
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Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by shikra »

Thank Y.Mita - of course! Just wanted to check if not already done or planned!
I have one on order already.

MichalM_sk
Posts: 89
Joined: Wed Jun 15, 2011 5:04 pm
Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

ankimo wrote:
MichalM_sk wrote:
ankimo wrote:Pre7(FINAL)Test report

Probably the direction of home is reverse. ;)

http://www.youtube.com/watch?v=y3wfyfLB9Qw

Kazz


I will check this problem.


Are other users OK?
Does my environment have a cause?

Kazz


Hi kazz,

could you like to try this modification ?

Find this line:

Code: Select all

relativeDirection = homeDirection - readedHeading - 180;


and replace with this:

Code: Select all

relativeDirection = homeDirection - readedHeading;


shikra wrote:Thank Y.Mita - of course! Just wanted to check if not already done or planned!
I have one on order already.


Hi shikra,
please check your email.Thanks.

ankimo
Posts: 30
Joined: Fri Jan 20, 2012 7:31 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by ankimo »

Mr. MichalM_sk
The result of modification is very good!
Thank you :D

http://www.youtube.com/watch?v=Nm0M61-nrc4

msev
Posts: 186
Joined: Thu Apr 14, 2011 11:49 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by msev »

In the next release my wishes are:

- summary screen (definable with speed, altitude, etc. : for example when speed is less that 1km/h and altitude less than 1m show summary screen)
With summary screen I mean: max altitude, max speed, max distance from home etc.
- set-able alarms for battery, etc (value flashing when in "critical" level)
- gps or baro vario (like +1m/s, -3m/s)
. definable thickness of letters, btw is size already definable?

Just some ideas :ugeek:

Deet
Posts: 129
Joined: Sun Jul 08, 2012 1:54 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

i thought settable alarms for the batteries was already included

MichalM_sk
Posts: 89
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Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

msev wrote:In the next release my wishes are:

- summary screen (definable with speed, altitude, etc. : for example when speed is less that 1km/h and altitude less than 1m show summary screen)
With summary screen I mean: max altitude, max speed, max distance from home etc.
- set-able alarms for battery, etc (value flashing when in "critical" level)
- gps or baro vario (like +1m/s, -3m/s)
. definable thickness of letters, btw is size already definable?

Just some ideas :ugeek:


Thanks for ideas.

Summary screen, variometer, font size will be implemented in next release.

Deet
Posts: 129
Joined: Sun Jul 08, 2012 1:54 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

Received my board today, thank you

I cant get into the menus, i am holding the aileron (roll) full to right and nothing happens

Am I missing something?
Last edited by Deet on Wed Aug 01, 2012 8:06 am, edited 1 time in total.

Deet
Posts: 129
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Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

One more question:

Where would I look in the code to change the batt2 display location, I would like it back in the centre of the first row

Deet
Posts: 129
Joined: Sun Jul 08, 2012 1:54 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

No matter what I try I cannot get the OSD to open the menu.

I really need an answer to this as I need to re-calibrate the Batt2 voltage display, on a full 4S pack it shows a voltage of 13.8 (it should be 16.8)

I dont care about the PID adjustments, but i do need to fix the Batt display otherwise this unit is of no use to me.

My endpoints and centres are correct in the software I have disabled "arm on roll" so that the display isnt being re-set by the board arming, I have tried at different throttle settings, I have re-flashed the FC and OSC boards. I dont know what else I can try.

MichalM_sk
Posts: 89
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Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

Hi,
- Value of ROLL command must be greater than 1900 for menu activation.
- You can try this modification for direct menu call.

Find this code:

Code: Select all

if(viewTime >= 500){ //10 sec timer   
    viewTime = 0;
    screen = 1;         // main screen
}


and change value of screen variable to

Code: Select all

screen = 6;

Deet
Posts: 129
Joined: Sun Jul 08, 2012 1:54 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

When I make the above change and power up the FC/OSD i get the "MOBIDRONE" line of text as then OSD starts, then i get a quick flash of a menu screen (less than a second) then the OSD screen comes on

I would guess this means the OSD thinks the FC is armed when its not

Deet
Posts: 129
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Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

I have it working now

I cleared the eeprom on the FC, reloaded the arduino sketch, reset all the PIDs and now it works

So I guess the FC eeprom had something corrupted somewhere

carlonb
Posts: 210
Joined: Sun Apr 03, 2011 6:29 pm

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by carlonb »

Hi Michal, and all tester guys,
I've installed and tested OSD v2.3 pre 7, all working well with Mwii 2.1 but...
May be I discovered a BUG that crash mobidrone.
If I try to trim the acc for level mode with throttle all up and roll all left/right to increase/decrease roll level, 3 time on 10 mobidrone go in crash, non more data received from MWii.
Mwii still working correctly, after reset OSD (arduino pro mini 5V 16MHz) all data restart on OSD.
NOTE: Tried with RC sens to 5.

May some one try and confirm ?
Bye, Carlo

Deet
Posts: 129
Joined: Sun Jul 08, 2012 1:54 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

Hi Michal

I have a problem with my mobidrone OSD: Bat2 doesnt seem to work

I run 4S packs (max 16.4 volts), I have run the voltage sense wire to the +Ve section of my power bus.

In the OSD display I first got 13.4V, I went into the OSD setup and changed bat2 to read 16.4 with a new pack installed.

But now at the end of a flight the Voltage in the OSD still says 16.4 and the battery indicator still shows full.

What have I done wrong? The voltage indicator was for me a key feature of this product, do I need to change components on the board perhaps, to deal with 4S packs?

Note at the end of the flight pack voltage is pack voltage is around 15.2V

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shikra
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Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by shikra »

Am interested too for fitting to a 4s at some point. I thought the circuit looked like it would support called with a max of no more than 15v and under because of a 1/3 divider.

MichalM_sk
Posts: 89
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Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

carlonb wrote:Hi Michal, and all tester guys,
I've installed and tested OSD v2.3 pre 7, all working well with Mwii 2.1 but...
May be I discovered a BUG that crash mobidrone.
If I try to trim the acc for level mode with throttle all up and roll all left/right to increase/decrease roll level, 3 time on 10 mobidrone go in crash, non more data received from MWii.
Mwii still working correctly, after reset OSD (arduino pro mini 5V 16MHz) all data restart on OSD.
NOTE: Tried with RC sens to 5.

May some one try and confirm ?
Bye, Carlo


Hi, I will check this bug.



Deet wrote:Hi Michal

I have a problem with my mobidrone OSD: Bat2 doesnt seem to work

I run 4S packs (max 16.4 volts), I have run the voltage sense wire to the +Ve section of my power bus.

In the OSD display I first got 13.4V, I went into the OSD setup and changed bat2 to read 16.4 with a new pack installed.

But now at the end of a flight the Voltage in the OSD still says 16.4 and the battery indicator still shows full.

What have I done wrong? The voltage indicator was for me a key feature of this product, do I need to change components on the board perhaps, to deal with 4S packs?

Note at the end of the flight pack voltage is pack voltage is around 15.2V


Hi,

there is needed two steps to 4S support:

1.HW modification
it is possible change first 10kOhm resistor (from bat pin) to 20 kOhm or add one 10kOhm resistor.

2.Software modification

find this line:

Code: Select all

sensVcc *= 0.0147;


and replace with:

Code: Select all

sensVcc *= 0.0196;

carlonb
Posts: 210
Joined: Sun Apr 03, 2011 6:29 pm

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by carlonb »

Hi michal,
I tested your awesome OSD and it's perfect, only a possible bug to investigate as I wrote some post ago, but now I have a request and hope you have spare time for this:
The bold number for Altidude and Speed now are "dashed" and not so clear to see, can you mod this in order to have the same character dimension but "Solid line" ?
Thanks , Carlo

Deet
Posts: 129
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Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

Thanks Michal, the resistor and code change appears to have fixed it

nivek
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Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by nivek »

Hello,
I fell very stupid ...
After reading the manual of mobidrone OSD (http://www.toptel.sk/multicopter/downlo ... oneOSD.pdf). I can not access main menu.

I have a Crius Multiwii SE flight board with Multiwii 2.1(http://homepage3.nifty.com/aohp/local/h ... ftware.pdf) and Turnigy radio (mode 2).
Rx, Tx, GND and +5V of mobidrone are connected to Tx, Rx, GND and VCC of UART pins (try on FTDI too). No current sensor and rssi connected.
When power is on, the red LED of mobidrone board lights up. I put roll command to full right but nothing happens. Motors seems arm (blue led lights up).

Can someone help me ?

Thank you very much for your help.

Deet
Posts: 129
Joined: Sun Jul 08, 2012 1:54 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

nivek

read back through this thread, i had the same issue and solved it

nivek2
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Joined: Fri Aug 24, 2012 8:08 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by nivek2 »

Hi Deet,

I read previous posts but nothing appends.
This is what i do :

    - clear eeprom of FC and OSD
    - comment ALLOW_ARM_DISARM_VIA_TX_ROLL in Multiwii 2.1
    - load Multiwii 2.1
    - value of ROLL is greater than 1900 in MultiwiiConf application when i am holding roll full to right
    - change VIDEO_TYPE to PAL
    - comment CURRENT_SENSOR and RSSISIGNAL
    - find in mobidrone OSD 2.3 (fixed arming problem) :

    Code: Select all

    if(viewTime >= 500){ //10 sec timer   
        viewTime = 0;
        screen = 1;         // main screen
    }

    - change value of screen variable to 6

    Code: Select all

    screen = 6;


    - load mobidrone OSD 2.3 (fixed arming problem)
    - power camera
    - power FC and OSD
    - OSD red led blinks once then lights up
    - calibrate FC
    - hold roll full to right
    - result : nothing

I am frustrated, i don't know what i can do.

Deet
Posts: 129
Joined: Sun Jul 08, 2012 1:54 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

the screen=6 is not a fix, it was something to test, it caused the OSD to start in a menu page. When i had my problem with that set to test, i woud get a quick flash from the menu for a 1/10 od a second before it would then go to teh main OSD screen

The OSD will xit setup IF the FC is armed. Somehow my guess is the eeprom had an error that was telling the OSD that it was in fact armed

Make sure the board is not armed when you try and go into the menu

nivek2
Posts: 6
Joined: Fri Aug 24, 2012 8:08 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by nivek2 »

Thank you Deet for precisions.

I change screen to 1 and clear eeprom of FC and OSD and reload FC and OSD firmware.
I try with another FC card : Flyduino Pro mini 16 mhz and Drotek 10 DOF LLC.

This is my connection :
Image
HD is here : http://alonso.kevin.free.fr/mobidroneosd.jpg

And then i hold roll full to right but nothing happens :
http://www.youtube.com/embed/dyT4rnVCZWU

What is wrong with connections or manipulation ?

Thank you again

MichalM_sk
Posts: 89
Joined: Wed Jun 15, 2011 5:04 pm
Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

nivek2 wrote:Thank you Deet for precisions.

I change screen to 1 and clear eeprom of FC and OSD and reload FC and OSD firmware.
I try with another FC card : Flyduino Pro mini 16 mhz and Drotek 10 DOF LLC.

This is my connection :
Image
HD is here : http://alonso.kevin.free.fr/mobidroneosd.jpg

And then i hold roll full to right but nothing happens :
http://www.youtube.com/embed/dyT4rnVCZWU

What is wrong with connections or manipulation ?

Thank you again



Hi nivek,

Which version of multiwii 2.1 firmware do you use?
In dev version are some changes in the serial protocol so it can cause this problem.

nivek2
Posts: 6
Joined: Fri Aug 24, 2012 8:08 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by nivek2 »

Hi Michal,

I use Multiwii 2.1, release date : 15 july, and mobidrone 2.3 prerelease 7, release date : 12 august.

These versions are compatible ?

MichalM_sk
Posts: 89
Joined: Wed Jun 15, 2011 5:04 pm
Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

nivek2 wrote:Hi Michal,

I use Multiwii 2.1, release date : 15 july, and mobidrone 2.3 prerelease 7, release date : 12 august.

These versions are compatible ?


Yes it is compatible.

Ok so :

find in this code variable screen = 1:

Code: Select all

  
if(viewTime >= 500){ //10 sec timer   
        viewTime = 0;
        screen = 1;         // main screen
}


and change state of variable screen to 6

Code: Select all

 screen = 6;


then find and remove this code

Code: Select all

if(Hsync == 0){
    if(armed){           //if motor armed go to main screen
        screen = 4;       
    }
}


and tell me what happens.

nivek2
Posts: 6
Joined: Fri Aug 24, 2012 8:08 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by nivek2 »

I make change and clear eeprom of FC and OSD then reload firmwares.

When power up, red led of OSD lights up but nothing on monitor.

nivek2
Posts: 6
Joined: Fri Aug 24, 2012 8:08 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by nivek2 »

After some discussion with Michal, everything works well.

My mistake is that I use 2 batteries: one for FC, osd, motors and 1 for vide and I do not connected all elements on the same GND ...

Thank you everyone for your help and good flights !

Deet
Posts: 129
Joined: Sun Jul 08, 2012 1:54 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

It seems i have one(i hope) final issue

The OSD overlay is not stable, it flickers around on screen

I have re-wired the video output of the OSD with a shielded cable but that doesnt seem to have fixed it

This is a video showing the problem

http://www.youtube.com/watch?v=63hUFhcIijA

The interesting thing is the first line of the OSD remains stable, all the sections below move

PAL video BTW

MichalM_sk
Posts: 89
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Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

Deet wrote:It seems i have one(i hope) final issue

The OSD overlay is not stable, it flickers around on screen

I have re-wired the video output of the OSD with a shielded cable but that doesnt seem to have fixed it

This is a video showing the problem

http://www.youtube.com/watch?v=63hUFhcIijA

The interesting thing is the first line of the OSD remains stable, all the sections below move

PAL video BTW


Hi,

I think it is a problem with resolution detection algorithm.
This problem occurs if vertical resolution isnt detected properly.
Could you try first turn on multiwii & osd and subsequently camera?

I can improve this algorithm but I need a tester with a similar problem.

Y.Mita
Posts: 46
Joined: Thu Sep 15, 2011 11:25 pm

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Y.Mita »

MichalM_sk wrote:
Deet wrote:It seems i have one(i hope) final issue

The OSD overlay is not stable, it flickers around on screen

I have re-wired the video output of the OSD with a shielded cable but that doesnt seem to have fixed it

This is a video showing the problem

http://www.youtube.com/watch?v=63hUFhcIijA

The interesting thing is the first line of the OSD remains stable, all the sections below move

PAL video BTW


Hi,

I think it is a problem with resolution detection algorithm.
This problem occurs if vertical resolution isnt detected properly.
Could you try first turn on multiwii & osd and subsequently camera?

I can improve this algorithm but I need a tester with a similar problem.


Mr.Deet, are you using GoPro ? It's video level is little bit diffrent than other camera and many times cause problem with OSD.
Mr.Michal, sorry my interfere about your ploblem.

Deet
Posts: 129
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Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

its not a GoPro, but do have one i can test with



Michal
Happy to work with you on this and do any testing you want

Will try powering up OSD/FC first and report back soon

MichalM_sk
Posts: 89
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Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

I am testing OSD also with GOPRO camera without problems.

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shikra
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Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by shikra »

Hi Michal,

could I ask for DEBUG values to be added as an option to display in the next release?
I had a look today and it will take me longer than I had hoped to understand the code to implement!

Deet
Posts: 129
Joined: Sun Jul 08, 2012 1:54 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

MichalM_sk wrote:
Hi,

I think it is a problem with resolution detection algorithm.
This problem occurs if vertical resolution isnt detected properly.
Could you try first turn on multiwii & osd and subsequently camera?

I can improve this algorithm but I need a tester with a similar problem.



Ok I tried powering up everything before the camera, but it was still shaking

It was only mild at first but got worse the longer I left everything on. Voltage to the OSC board was steady over that time so i dont think that is a factor

mahowik
Posts: 332
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Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by mahowik »

Hi Michal,

Does it possible to support RSSI (PWM) in your project?
Some receivers has RSSI in PWM. E.g. D8R-XP http://www.frsky-rc.com/ShowProducts.asp?id=126

thx-
Alex

MichalM_sk
Posts: 89
Joined: Wed Jun 15, 2011 5:04 pm
Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

Deet wrote:
MichalM_sk wrote:
Hi,

I think it is a problem with resolution detection algorithm.
This problem occurs if vertical resolution isnt detected properly.
Could you try first turn on multiwii & osd and subsequently camera?

I can improve this algorithm but I need a tester with a similar problem.



Ok I tried powering up everything before the camera, but it was still shaking

It was only mild at first but got worse the longer I left everything on. Voltage to the OSC board was steady over that time so i dont think that is a factor


So its caused by low input voltage or using the wrong "GND" or by interferences.

mahowik wrote:Hi Michal,

Does it possible to support RSSI (PWM) in your project?
Some receivers has RSSI in PWM. E.g. D8R-XP http://www.frsky-rc.com/ShowProducts.asp?id=126

thx-
Alex


Hi,

it should work fine.

New PRE7.5 version available on my codepage.
It is PRE7 version with some features from next release.

Code: Select all

Changes:

/- mobiDrone OSD v 2.3 PRE Release 7.5 
 + New result screen with fly time, high altitude, high speed, high current, high distance   
 + Added fly time to main screen
 + Adjustable max radar distance
 + Fixed menu noises in some case
 + GPS speed units changed to km/h (tested by Neo360)

mahowik
Posts: 332
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Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by mahowik »

MichalM_sk wrote:it should work fine.

New PRE7.5 version available on my codepage.


Great!

So it means that it has auto recognition of RSSI type? I.e. analogue or PWM?

Deet
Posts: 129
Joined: Sun Jul 08, 2012 1:54 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Deet »

I am connecting v+ and Gnd to the serial connector on the FC board,

I cant see its interference as the OSD is as far away from all the other electronics as it can get

What would be a better Gnd?

And what is the required voltage range?

nivek2
Posts: 6
Joined: Fri Aug 24, 2012 8:08 am

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by nivek2 »

Deet wrote:I am connecting v+ and Gnd to the serial connector on the FC board,
I cant see its interference as the OSD is as far away from all the other electronics as it can get
What would be a better Gnd?
And what is the required voltage range?


Hi,
GND and +5V pins of OSD are connected to FC. Voltage range should be 5 volts.
I have a long video cable for tests. When i connect video pin far of video output of camera, i have interferences. But when video pin is near video output of camera, display is good.

Have you try to change video pin position ?

carlonb
Posts: 210
Joined: Sun Apr 03, 2011 6:29 pm

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by carlonb »

Hi Michal,
I saw your last rev of today "mobiDroneOSD_v2.3_PRE_RELEASE_7.6" and I do not understood why the conversion of the speed in Km/h now is again divide by 100, last rev was divided by 27.8.

Furthemore, some time ago I ask you if it's possible have the altitude and speed with bold numbers with solid lines and not dashed, are not so clear to read.
Of course if you have time to do that :oops:

Thanks a lot
Carlo

Neo360
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Joined: Sun Aug 12, 2012 1:49 pm

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by Neo360 »

Michal,

+ GPS speed units changed to km/h (tested by Neo360)

Not is my idea :) but was by CarlonB i just tested after i told him :)

Remember my request please RSSI in %

MichalM_sk
Posts: 89
Joined: Wed Jun 15, 2011 5:04 pm
Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

carlonb wrote:Hi Michal,
I saw your last rev of today "mobiDroneOSD_v2.3_PRE_RELEASE_7.6" and I do not understood why the conversion of the speed in Km/h now is again divide by 100, last rev was divided by 27.8.

Thanks a lot
Carlo


Ahh sorry there is bug. Will be fixed.

Neo360 wrote:Michal,

+ GPS speed units changed to km/h (tested by Neo360)

Not is my idea :) but was by CarlonB i just tested after i told him :)

Remember my request please RSSI in %


Ok, finished.

MichalM_sk
Posts: 89
Joined: Wed Jun 15, 2011 5:04 pm
Location: Slovakia

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by MichalM_sk »

Deet wrote:I am connecting v+ and Gnd to the serial connector on the FC board,
I cant see its interference as the OSD is as far away from all the other electronics as it can get
What would be a better Gnd?
And what is the required voltage range?


Hi, It isnt enough power the OSD from FTDI connector. You connect osd to 5V bus (from 5V BEC)

User avatar
shikra
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Joined: Wed Mar 30, 2011 7:58 pm

Re: mobiDrone nano arduino OSD for MultiWii with PID config

Post by shikra »

@Deet - connect ground from camera line to mobidrone OSD rather than controller (or as well as....). It's very critical to have correct voltage reference to same ground for this style of design. Just a small difference will cause this issue.

I would wager it would solve your issue...

Mine is working fine (since also correcting the same grounding error on my part!).

Just to be clear - its not an OSD issue. Same with others - vid signals are critical for timing and level. Its needs the same reference point as the camera to work.

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