Blogs

Freewave Radio Moving live H.264 Video, with 10 PWM Channels and GCS

Posted by Eraser on March 10, 2011 at 8:00pm

3689392762?profile=original

Test Airframe: Senior Telemaster 8'


Boards:
APM
Oilpan
Arduino Pro
Freewave Radio
Eflight ESC & Motor
H264 Video Server

Joysticks that work:

Logitech G940 (no yaw on foot pedals yet) - Working on getting trim math working in the code.

Logitech Attack 3 (Tested all control surfaces working)


Other:
2 Cameras, 1 foward facing, 1 PTZ

Using Laptop with UBUNTU and Logitech Joysticks.

Phase 1:

 

a. Working Joystick Controls all surfaces of Airframe, Various buttons on Joystick change APM flight mode.
a. Completed

Added:

 

b. Working on integrating Logitech G940 Flight System

no yaw on foot pedals as off yet, does n't seem to show in the PYGAME librarys.

work to be done.

 

Phase 2: Complete
a. General Test - Live video through radio and video server.

b. Need to test and measure various bandwidth requirements for H264, frame sizes etc...

 

Phase 3: Complete
a. 4 Mile Test - 74db signal level Great video quality control surfaces respond instantly.
b. 15 mile test coming shortly.

 

Phase 4:Working on it.
Test GCS with waypoints.

 

Phase 5: Drop everything neatly back into airframe.

E-mail me when people leave their comments –
Follow

You need to be a member of diydrones to add comments!

Join diydrones

Comments

  • Eraser March 7, 2011 at 6:39pm
    well since I spent almost 700 dollars on a electric motor for a plane I think the radio to push these distances is a steal.
  • Eraser March 7, 2011 at 6:38pm
    @Jack crossfire
    Hmm, then why do I have 8 or nine of these, and why are they made in boulder, colorado and why did the tell I.S. 375usd each?
  • I.S. March 7, 2011 at 5:39pm

    @John Arne Birkeland

    1.3GHz is only for mil.

    They will release a 2.4GHz version in few weeks. (but you know: not as good for NLOS)

  • I.S. March 7, 2011 at 5:36pm
    The tech support guy told me 375USD for each module (asked per 3) and about 750USD the Dev kit
  • Bill Porter March 7, 2011 at 5:35pm
    Lol, I was about to say, did anyone mention the price of FreeWaves?

    Cheap (and very well proven) for government use (we have a ton of them at work) but expensive to the at-home DIYer.
  • Developer
    John Arne Birkeland March 7, 2011 at 5:34pm
    Looked over the data sheet for the AXIS M7001 h.264 encoder and as usual they say nothing about the h.264 profile used and encoding latency. But realistically it would have to be a constrained baseline (CBP) or baseline profile (BP). So you will not get the same bit rate efficiency as a normal mp4 / youtube file using main or high profiles. But on the other hand BP profiles usually means low latency encoding so that is good. A 1mbit/sec radio link should be more then enough for adequate video quality. ~640Kbit/sec is pushing it, but should work for normal high altitude flying.
    The Freewave modems looks very interesting. To bad we can not use 900mhz in Europe. Will have to look into the 400mhz and 1.3ghz versions. And word on what price range they are in?
  • Jack Crossfire March 7, 2011 at 5:18pm

    There is a huge demand for 1 megabit 900Mhz radios but no supply, & even less in english.  Been thinking of just ganging together tons of FSK chips to make a mercy product.  The freewave MM2-HS-T hurls 1.2megabits 30 miles.  If you need to know the price, you can't afford it.  2 are made per year, by the guy in China who also makes the flux capacitor, but export restrictions only let him export 1 radio to US. 

  • T3
    Jared S March 7, 2011 at 4:30pm
    What kind of time delay do you see in the video? H264 takes some time to encode.
  • I.S. March 7, 2011 at 4:23pm

    D1 isn't 704x576 for PAL and 704x480 for NTSC?

    Eager to see your vdos. Youtube sucks sometimes. Give Vimeo a try?

  • Eraser March 7, 2011 at 4:19pm
    I have tried to upload a couple  times to  youtube keeps failing.....  Will have one soon.
This reply was deleted.