SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Jan 02, 2013, 06:09 PM
Registered User
Joined Mar 2012
40 Posts
Quote:
Originally Posted by jaroSK View Post
Hi,
who know what I did wrong ? Pls, look on my video, rotation about one axis is ok, but rotation about the second axis is different, servo always return to original position. Is it normal or something is wrong ? HW ? or sw calibration ?

thanks
Jaro

http://www.youtube.com/watch?v=tk-vP...ature=youtu.be
The problem is in the calibration of the accelerometer.
Open the accelerometer application and go to the pull down menu help.
Follow the instructions. this will solve you're problem!
If not, contact me via YouTube or rcgroups.

Sjb
sjb_rc is offline Find More Posts by sjb_rc
Reply With Quote
Sign up now
to remove ads between posts
Old Jan 02, 2013, 06:45 PM
Oxford Panic
AndyOne's Avatar
United Kingdom, Oxford
Joined Feb 2003
3,659 Posts
Jaro,

I had most if not all the problems others had with this project but eventually got them sorted. Search this thread for all my comments and you probably find the answers you need.

A.
AndyOne is offline Find More Posts by AndyOne
Reply With Quote
Old Jan 02, 2013, 10:43 PM
Registered User
P.I.Engineer's Avatar
United States, CA, Redondo Beach
Joined Mar 2005
629 Posts
my z-axis accel cal is at like 2192 or 1904, is there any way to fix this? Or do i have a garbage sensor board?
P.I.Engineer is offline Find More Posts by P.I.Engineer
Reply With Quote
Old Jan 03, 2013, 12:08 AM
also known as ke123
krise's Avatar
Canada, AB, Edmonton
Joined Dec 2007
186 Posts
Just a clarifying note for someone wiring this button like me: this is not Pin 11 (D8) as in the arduino pin diagram that comes up when you google "arduino nano pins", this is pin D11 that must be connected to ground to set center.

BTW thanks Dennis this headtracker works awesome!


Quote:
Originally Posted by Dennis Frie View Post
Always good to know to obvious things I haven't documented good enough... Documenting is not really my strong side.

Reset shouldn't be necessary - at least quite a few people have been able to make it work pretty good without drift.

Anyway, if you ever need to reset center, it's a lot better to connect a button between to be used as "set center".

The pin is defined in config:
// Button input:
#define BUTTON_INPUT 11

Just connect a button between the pin defined (in this case 11)) and ground. Will make it center immediately with no start-up delay
krise is online now Find More Posts by krise
Reply With Quote
Old Jan 03, 2013, 05:47 AM
Oxford Panic
AndyOne's Avatar
United Kingdom, Oxford
Joined Feb 2003
3,659 Posts
It's a good idea to have a reset switch because if you switch on the tracker when facing the wrong way, you don't have to pull the plug and fumble it back in whilst wearing the goggles.

A.
AndyOne is offline Find More Posts by AndyOne
Reply With Quote
Old Jan 04, 2013, 09:41 AM
Registered User
Poland, Swietokrzyskie, Starachowice
Joined Feb 2011
16 Posts
Hello friends.

Awesome design - Big Thank creators!

I would like to present my Fatshark BASE goggles modification:
On the left I installed - AV Receiver 5.8G Video Receiver Set for FPV system + Dip swich changing channels
On the right I installed my HT (ArduinoProMini), and with the hotglue. + My diy 6pin socket 232 HT programming

Equipment I use Turnigy 9x + soft ER9x
To send the wireless signal PPM - Fatshark <> Turnigy, I used the TX + RX modules 413Mhz - TX5 in Fatshark + RXB14 Turnigy receiver.

HT reset swich on the right.
PPM signal can be transmitted via a cable - plug Futaba Micro Audio Video

the entire modification process Fatshark Baseyou can see in the gallery , or a fraction of the photos below:










RF-modules PPM Link tested - work with FrSky 2.4Ghz and Rimelec LRS 433MHz

Edit:
Mod in turnigy9x:






Greetings from Poland
PROFESOR
rc-fpv.pl
piotrek.zet is offline Find More Posts by piotrek.zet
Last edited by piotrek.zet; Jan 04, 2013 at 10:48 AM.
Reply With Quote
Old Jan 04, 2013, 09:45 AM
Just another user
Dennis Frie's Avatar
Denmark, Capital Region of Denmark, Naerum
Joined Feb 2011
906 Posts
Quote:
Originally Posted by piotrek.zet View Post
Hello friends.

Awesome design - Big Thank creators!

I would like to present my Fatshark BASE goggles modification:
On the left I installed - AV Receiver 5.8G Video Receiver Set for FPV system + Dip swich changing channels
On the right I installed my HT (ArduinoProMini), and with the hotglue. + My diy 6pin socket 232 HT programming

Equipment I use Turnigy 9x + soft ER9x
To send the wireless signal PPM - Fatshark <> Turnigy, I used the TX + RX modules 413Mhz - TX5 in Fatshark + RXB14 Turnigy receiver.

HT reset swich on the right.
PPM signal can be transmitted via a cable - plug Futaba Micro Audio Video

the entire modification process Fatshark Baseyou can see in the gallery , or a fraction of the photos below:










RF-modules PPM Link tested - work with FrSky 2.4Ghz and Rimelec LRS 433MHz



Greetings from Poland
PROFESOR
rc-fpv.pl
Wow, that looks pretty "brave"
Very nice done.

You mentioned PPM link was tested. Do you use PPM-read and PPM-generate to put headtracker-channels on extra channels? It should work just fine, bit I haven't heard anyone else actually use it.
Dennis Frie is online now Find More Posts by Dennis Frie
Reply With Quote
Old Jan 04, 2013, 10:09 AM
Registered User
Poland, Swietokrzyskie, Starachowice
Joined Feb 2011
16 Posts
Thanks, it was a little work on the goggles .
HT generates a PPM-out - only 3 channels PPM - so much need for ER9x
Mixer in ER9x does the rest.
mixes on channel 5 - PPM1, 6 - PPM2, 7 - PPM3

Wireless Link RF513Mhz tested previously tested FrSky2.4GHz - here you have a video:

OpenHeadTracker Test #2 (2 min 56 sec)


Tests HT - in the Air soon - as soon as the weather improves with us!
piotrek.zet is offline Find More Posts by piotrek.zet
Reply With Quote
Old Jan 04, 2013, 10:27 AM
Just clumsy. Oh, forgetful too
MikeTheCrash's Avatar
undefined
Joined Jun 2008
3,358 Posts
"Neat" 9x installation completed;

I wouldn't recommend using a jack, I plugged it in with the radio on and managed to short the 12v supply despite having it at the tip of the plug. Now I have replaced 3 burnt tracks in the radio and need to buy a new SmartieParts board

Now know not to do this when the radio is powered. I'll change it to 5pin DIN one day

cheers

Mike
MikeTheCrash is online now Find More Posts by MikeTheCrash
Reply With Quote
Old Jan 05, 2013, 12:48 AM
Registered User
United States, CA, Los Angeles
Joined Sep 2012
690 Posts
Very nice! I would like to see what parts you used for your RF513MHz wireless link. Do you have a web link or thread where you show info about the wireless link?


Quote:
Originally Posted by piotrek.zet View Post
Thanks, it was a little work on the goggles .
HT generates a PPM-out - only 3 channels PPM - so much need for ER9x
Mixer in ER9x does the rest.
mixes on channel 5 - PPM1, 6 - PPM2, 7 - PPM3

Wireless Link RF513Mhz tested previously tested FrSky2.4GHz - here you have a video:


Tests HT - in the Air soon - as soon as the weather improves with us!
EngineerX is offline Find More Posts by EngineerX
RCG Plus Member
Old Jan 05, 2013, 06:09 AM
T.ing to put on air 100 models
chiloschista's Avatar
Switzerland
Joined Feb 2008
665 Posts
Yesss :D

Hi Dennis,

now I have a full working drift free headtracker : so happy.
It was so easy to setup and configure, with working hardware.
Electronics were ordered from Goodluckbuy this time.
Thank you very much.

Now I have to solve the annoying problem with the stretcher.
What about developing a working one ?
Has anyone some suggestions about a good solution ?
I should try to stay at low tx throws, to avoid sync problems with Sherrer LR RC system.

Best regards,

Ric
chiloschista is online now Find More Posts by chiloschista
Reply With Quote
Old Jan 05, 2013, 06:18 AM
LKJ
Lars k Jensen
Denmark, Central Denmark Region, Tostrup
Joined Apr 2006
615 Posts
Quote:
Originally Posted by chiloschista View Post
Hi Dennis,

now I have a full working drift free headtracker : so happy.
It was so easy to setup and configure, with working hardware.
Electronics were ordered from Goodluckbuy this time.
Thank you very much.

Now I have to solve the annoying problem with the stretcher.
What about developing a working one ?
Has anyone some suggestions about a good solution ?
I should try to stay at low tx throws, to avoid sync problems with Sherrer LR RC system.

Best regards,

Ric
Buy a servo hvo can do what you want, they run smooth stretchers usually have to low resolution.
Hyperion Atlas digitals can do 170 and work smooth, i use them on pan.

Lars.
LKJ is online now Find More Posts by LKJ
Reply With Quote
Old Jan 05, 2013, 06:53 AM
T.ing to put on air 100 models
chiloschista's Avatar
Switzerland
Joined Feb 2008
665 Posts
Quote:
Originally Posted by LKJ View Post
Buy a servo hvo can do what you want, they run smooth stretchers usually have to low resolution.
Hyperion Atlas digitals can do 170 and work smooth, i use them on pan.

Lars.
A programmable servo, yes, good idea.
Thanks,

Ric
chiloschista is online now Find More Posts by chiloschista
Reply With Quote
Old Jan 06, 2013, 02:46 PM
KISS
hefest's Avatar
Joined Oct 2009
1,211 Posts
Quote:
Originally Posted by chiloschista View Post
Hi Dennis,

now I have a full working drift free headtracker : so happy.
It was so easy to setup and configure, with working hardware.
Electronics were ordered from Goodluckbuy this time.
Thank you very much.

Now I have to solve the annoying problem with the stretcher.
What about developing a working one ?
Has anyone some suggestions about a good solution ?
I should try to stay at low tx throws, to avoid sync problems with Sherrer LR RC system.

Best regards,

Ric
MD260 servo can do over 180 degrees without any modification. Its 12 grams, not perfectly smooth but the price is right.
hefest is offline Find More Posts by hefest
Reply With Quote
Old Jan 06, 2013, 04:48 PM
T.ing to put on air 100 models
chiloschista's Avatar
Switzerland
Joined Feb 2008
665 Posts
Quote:
Originally Posted by hefest View Post
MD260 servo can do over 180 degrees without any modification. Its 12 grams, not perfectly smooth but the price is right.
Good catch, thanks.
Does it reach 180 with standard 1100-1900us pulse (+-100%) ?
Specs say it can reach 260 and deadband is less than 4us, which should mean a good precision.

In the meantime I swapped the old HS81 with an HS225. HS81 was no more centering. I had several of those with this issue. HobbyKing D-MG16 are way better and cheaper.

Ric
chiloschista is online now Find More Posts by chiloschista
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log Diy osd (Arduino and opensource) Dennis Frie FPV Equipment 2413 Aug 08, 2014 01:30 AM
Discussion PPM to PWM circuit for headtracker 38cjc38 DIY Electronics 18 Mar 04, 2011 06:43 AM
Question Adding additional PPM inputs to a headtracker/module setup. SebastianJ FPV Talk 0 Aug 19, 2009 07:38 AM
Question Adding additional PPM inputs to a headtracker. SebastianJ DIY Electronics 0 Aug 18, 2009 03:37 PM