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About ma_meister

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    RC-Cam Visitor
  1. Hi there, me and my brother were pretty successful flying a litte 3channel electric plane (Wing Dragon, has many other names too) with a Mustek GSmart Digi3 (a used one from ebay 25 euros) and a powerswitch that was operating the trigger from the 4th channel (we drilled a hole in our radio control to have a proper switch ). Unfortunately after the 10th landing or so soldering joint somewhere gave way and the system is down for now. My question is: I am looking for a 40g camera with SD slot (or fixed internal memory) and fixed internal battery pack for approx the same weight range (40 - 80g max). Any recommendations or suggestions? cheers, Martin
  2. Interesting, thank! I think we will need to modify a draganfly or xufo for our purposes (prolong the carbon axes to the rotors, increase rotor diameter, add bigger motors, add more batteries for more voltage and mAh). cheers, Martin
  3. Wow, what a great video! Thanks for posting the link (by the way I checked out your site, amazing stuff, Thanks for putting that online! Very inspirational!). The stripes are annoying that's right. Although it does not seem as bad as the artefacts I have seen in my first flight. Will post results of my next experiments. cheers, Martin Another question (I am greedy I know ): My boss at work is fascinated by Quadrocopters (e.g. Draganfly). Any experiences how much they can lift? Idea is to lift up a normal camcorder (500g) and additionally the rc cam for pilot view (about 80 gramm). We need to do it via camcorder for image quality. It will be joint pattern recognition/computer graphics project (image based reconstruction and rendering). The golden rule there is: garbage in - garbage out. While this does not mean the normal rc link setup is bad it certainly means that the less quality we put in the less we get out. Thanks for thoughts
  4. Hi, I will try again with my a reflector for the receiver and sender antenna and will post results. Kilrah, you were right. We accidentally had mobile phones on. cheers, Martin
  5. Hi, sorry for the problems with the videos, they play fine with me (all players, I must have used a really wierd codec). Picture of my receiver unit Martin
  6. I just found this thread http://www.rc-cam.com/forum/index.php?showtopic=689 Would be great to here from users of this technology. Any videos out there on the web? Cheers, Martin
  7. I think that Wireless Cameras (e.g. 802.11g WLAN) might be an alternative if you have a plane that can carry the weight. As I see it at the moment you would only need a laptop with a WLan Card to go on the field (and maybe an access point with an extra antenna for link quality) and then mount the WLan cam on the plane (need to setup the wireless lan network at first). There are versions that do 640x480 at 30 fps (the more fps the better when flying) as an MPEG4 downstream (several KBits/sec, no problem for your > 1GHz laptop). If have no experience yet with that setup and have no idea what happens for example when the signal is lost. Maybe the image will just stand still until it gets another frame. The newer digital video codecs should be able to handle unstable connections, since they are designed to. This might of course not be a good option when you want to fly with that image as a cockpit view alone. Analog will be better then, better to have a bad quality image than no image (especially when landing ...). What do you think? Martin M.
  8. Videos in the website: The videos are Divx4-encoded. You can get the codec for free from the internet (install divx5 free edition, I think, it will play the dixv4 ones). CCD vs CMOS: Ok, I see. If that is a typical problem then it seems I would have to switch to ccd. What I still ask myself is: are all artefacts seen in this video due to the camera? That does not seem plausible to me, I think the radio connection my ba a bit faulty, too. But back to topic: Are WLan cameras in use by the RC cam experts in this forum? I have checked out a lot of manufacturers and just found one that does NTSC resolution (640x480) at 30 fps over 802.11g WLan. It is called "CAS 700W". Unfortunately the data sheet does not tell the weight of that thing, which would be of paramount importance. Regards, Martin
  9. Hello I am new to the forum. Let me introduce myself:This is my camera/video-story so far: My plane is a wing dragon sportster (name is leo). I am using a Mustek GSmart 3 (internal 16 Meg of RAM, internal Batteries, can record 320*240 video at 10 fps for 3,5 minutes) and recently purchased a cheap (120 dollars) 2,4GHz system (1/3 [edited: not ccd but] cmos cam, 9V batterie charged, svideo to USB MPEG1/2/4 hardware grabber). I have a problem with the antenna and a lot of redish blur at the lower edge of the video. Maybe it is the automatic len aperture doing something wrong. Furthermore I will need a better receiver antenna (probably Yagi for a second person to track it). Dropouts everythere. If you are interested please check out my page, comments very welcome: http://www9.informatik.uni-erlangen.de/Per...ter/leopold/leo (The text is in german). Please do not watch the last two videos if you are epileptic or have a strong sensitivity to flashing red lights. I would very much appreciate any comments on the last two videos (the 2,4 GHZ ones) and how I can increase the picture quality! ------------------ Now here is my question (Sorry, if I have overlooked any posts that deal with it already): I am quite disappointed by the quality of analog video over the (very crowded in Germany) 2,4 GHz Band. I am thinking of trying out digital. This is my plan: Wireless LAN (WLAN) Camera are on the market from about 100 dollars/euros up, featuring at least the same picture quality as the cheap 2,4GHz systems. Any experiences? Are they too bulky/heavy for an electric park flyer (my plane is 600 gramm but I have no problems taking about 80 gramm extra in the air)? Power consumption could be high (they have internal webservers and all the stuff...) and sometimes live on voltages of 6 Volts. My questions: What happens if you lose signal? Are there any cameras doing the full NTSC (640x480) with 30 fps or likewise PAL (720x576) with 25 fps at decent codecs (MPEG4)? Do the fields choke the MPEG4 compression scheme? Are there videos online so I can have a look before buying? I would need to get a directional WLAN antenna (say 100 dollars), WLAN Camera (say 200 dollars) and a WLAN cards for my laptop (100 dollars) so I guess it is an investment of about 400 dollars or approx 350 euros. Any ideas? Experiments already? Thanks very much! Martin M.
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