HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Feb 18, 2009, 05:02 AM
Registered User
Zbig's Avatar
Warsaw, Poland
Joined Oct 2006
402 Posts
Build Log
My home made FPV system: OSD+diversity+telemetry+tracking antenna+autopilot+IMU+PC

There is a lot of FPV equippments available today, so why build new system from the scratch?
In my case: because it was a challenge :-)
I've started years ago with OSD system.
Next project was 4 channel diversity receiver.
After several months I built telemetry (data transmission) between OSD and receiver, to show on LCD display all flight parameters, and of course last position of lost airplane.
Next idea was to add ability to move receiver antenna to point exactly at the airplane. And at the end (so far) connectivity between receiver and PC (laptop) with software to get telemetry data, show airplane track on the map, save it, and export it to Gogle Earth.
Now it is quite complete system, for those who want to flight far away, find lost airplane or even share flight track with other FPV pilots.

Now it's time for some pictures

My osd:

and sample screen


My Diversity receiver


My PC software


and overall diagram of my system in attachement.
Zbig is offline Find More Posts by Zbig
Last edited by Zbig; Apr 16, 2010 at 04:16 AM. Reason: Added IMU as a part of system
Reply With Quote
Sign up now
to remove ads between posts
Old Feb 18, 2009, 05:07 AM
Registered User
BushmanLA's Avatar
Joined Dec 2005
1,815 Posts
Nice work.
BushmanLA is offline Find More Posts by BushmanLA
Reply With Quote
Old Feb 18, 2009, 07:46 AM
Electronics slayer
SouthPawPaul's Avatar
Reading, UK
Joined Jul 2008
494 Posts
Nicely done.

How have you found cost compared to commercial offerings - especially the diversity rxr?
Are there savings to be had or is it just a project of passion?

- Paul.
SouthPawPaul is offline Find More Posts by SouthPawPaul
Reply With Quote
Old Feb 18, 2009, 08:11 AM
Registered User
Zbig's Avatar
Warsaw, Poland
Joined Oct 2006
402 Posts
Quote:
Originally Posted by Mr Fluffy
How have you found cost compared to commercial offerings - especially the diversity rxr?
Are there savings to be had or is it just a project of passion?
There are two sources of cost: hardware and software/project.
Considering hardware cost (when reproducing this project), savings are significant .
But software and project required a lot of work - hundrets of hours, so its cost is far, far bigger than price of commercially available products .

Prototypes are always expensive, only mass production can make cost low (or just acceptable for customers).
Zbig is offline Find More Posts by Zbig
Reply With Quote
Old Feb 18, 2009, 08:19 PM
Time's fun when ya havin flies
cncoz's Avatar
Qld, AU
Joined Sep 2007
445 Posts
Congratulations on a job well done !
Looks awesome.
cncoz is offline Find More Posts by cncoz
Reply With Quote
Old Feb 18, 2009, 08:51 PM
Live FPV or Die
VRflyer's Avatar
Montreal,Canada
Joined Feb 2002
3,960 Posts
wow amazing work, and you do that just for fun. If I had your knowledge, I would be rich today.

Very impressive
VRflyer is offline Find More Posts by VRflyer
Reply With Quote
Old Feb 18, 2009, 09:56 PM
WHEN IN DOUBT FLOOR IT!!!
G-unit's Avatar
AZ
Joined May 2006
4,722 Posts
NICE!!
I wish i could do that
G-unit is offline Find More Posts by G-unit
Reply With Quote
Old Feb 19, 2009, 03:59 AM
Registered User
Zbig's Avatar
Warsaw, Poland
Joined Oct 2006
402 Posts
Some parts of this projects are already available as Do-It-Yourself files, for example OSD board, and diversity receiver.
License for this projects is "wineware" - it means one bottle of wine (or equivalent payed by PayPal).
All files for OSD board (except HEX file, which will be send individually) are available in this FPV forum:
OSD files

Quote:
Originally Posted by VRflyer
I would be rich today.
So according to this kind of license I would be drunk today
Zbig is offline Find More Posts by Zbig
Reply With Quote
Old Feb 19, 2009, 10:50 AM
Live FPV or Die
VRflyer's Avatar
Montreal,Canada
Joined Feb 2002
3,960 Posts
very funny
VRflyer is offline Find More Posts by VRflyer
Reply With Quote
Old Feb 19, 2009, 11:52 AM
Stupid gravity!
docphi's Avatar
Trinity, FL
Joined Jul 1999
1,515 Posts
What chip are you using to generate the video?
docphi is offline Find More Posts by docphi
Reply With Quote
Old Feb 19, 2009, 01:29 PM
Registered User
Zbig's Avatar
Warsaw, Poland
Joined Oct 2006
402 Posts
Quote:
Originally Posted by docphi
What chip are you using to generate the video?
Atmega328. All video overlay is produced by the Atmega's software, not hardware. That way I can produce text and graphics, with low cost of hardware.
Of course it is a video mixer on board, but made of transistors, resistors and diodes. This mixer guarantees, that OSD signals do not harm video signal (white/black/sync levels), regardless of camera and actual scene exposure.
Some simple OSD uses single resistor to mix signals, and that can't work properly.
In my OSD you can also change background level of text (with potentiometer)
Zbig is offline Find More Posts by Zbig
Reply With Quote
Old Feb 19, 2009, 03:22 PM
Stupid gravity!
docphi's Avatar
Trinity, FL
Joined Jul 1999
1,515 Posts
Wow! I'm not worthy! Great job! How do we get the files to build the diversity receiver?
docphi is offline Find More Posts by docphi
Reply With Quote
Old Feb 20, 2009, 01:22 AM
Registered User
JMSTECH's Avatar
Canada, BC, Duncan
Joined Dec 2006
3,618 Posts
Wow!! Amazing Work!!! :d
JMSTECH is offline Find More Posts by JMSTECH
Reply With Quote
Old Feb 20, 2009, 04:04 AM
Registered User
Zbig's Avatar
Warsaw, Poland
Joined Oct 2006
402 Posts
Quote:
Originally Posted by docphi
How do we get the files to build the diversity receiver?
Diversity receiver uses Comtech DEMO board (video amplifier + audio decoders) and additional Comtech RF modules, plus my control board (with Atmega32 processor).
So far my collegues in Poland built several Diversity receivers, based on modules I've bought directly from Comtech.
DEMO board needs to be tuned, to achieve vivid colors and high picture resolution.
I know that Comtech RF modules are used in stdandard receiver from RangeVideo store, and it is also possible to build my Diversity based on 4 those receivers (or one receiver and 3 additional RF modules).
I can send Diversity files via e-mail.
Zbig is offline Find More Posts by Zbig
Reply With Quote
Old Feb 23, 2009, 09:06 AM
Registered User
Zbig's Avatar
Warsaw, Poland
Joined Oct 2006
402 Posts
This video shows how my tracking antenna works.

Tracking antenna test (1 min 48 sec)
Zbig is offline Find More Posts by Zbig
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion my prototype home made RC system 1.2KM range ENG.Alamin DIY Electronics 8 Feb 16, 2009 08:05 AM
Here are my home made blades Yukonho Micro Helis 0 Nov 16, 2003 06:52 AM
What GWS fan for my home made B-2? Air 1 Electric Ducted Fan Jet Talk 0 Mar 27, 2003 09:52 PM
My Home Made CP Piccolo pictures and stuff Eco8gator Electric Heli Talk 7 Jan 02, 2002 10:36 PM
My Home-Made CP Piccolo Flys!!!:) Eco8gator Electric Heli Talk 2 Dec 21, 2001 11:52 PM