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randall1959

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Everything posted by randall1959

  1. This is an idea I've been working on for the last few weeks. For starters, I used a "peanut" style motorcycle helmet. It's compact and lightweight and devoid of holes and sculptured surfaces. I mounted my 2.4 ghz receiver and GP patch antenna to the top of the helmet, so as to always have it aimed at the modified Kadet Senior that I use for AP and AV. Then I attached a mounting block to the side of the helmet and bolted an aluminum arm onto the mount for a 2.5" TFT monitor I found on Ebay. Since both the monitor and the receiver run off 12 volts, I use a 10 cell 1800 ma pack to power them. I never much cared for the idea of flying under the hood, but I have been wanting a good way to aim my nikon and this works perfectly. The monitor is easy to see even in sunlight, due to the fact that it's set vertically and doesn't have the sun shining directly onto it. I can flip a switch on the side of the plane to switch from my Nikon 3700 to my on board CCD bullet camera with pan servo. If I want, I can still run an av cable to my tv set for times when there are crowds like the science fair I'll be flying at next week. I like the idea of having the plane and the monitor a glance away from each other. All I have to do is line up with my intended AP subject and glance down at the monitor for the correct time to flip the shutter switch.
  2. I'll take a reading tomorrow and get back to you then.
  3. Ok, here's what I have so far. I've found the power wire and the ground. I've also found that my av cable has to also ground to the crt, through the common ground wire. I've also found the AV input wire. Now, when I hook up my video source, which is my mustek DV 4000, which I know works, I get what appears to be a very fast rolling effect on the crt. There are two small screws on the end of the board that are unlabled, but these only appear to affect brightness and contrast. There also appears to be two rings of some sort around the crt, but they are painted, like there's some setting that needs to be maintained. Are these the vertical and horizontal hold adjustments? If so, what is the procedure for eliminating the paint? Heat? I know the input I have is video, as I can run my hand in front of the camera and the crt goes dark till I remove it. Or, am I possibly overdriving the AV input and need a resistor of some sort? Thanx for any ideas on this. If I could just get this to work it might come in handy as a viewfinder for my AP.
  4. Yea I don't know what the deal is. When I hook up any of the other five wires to the AV out of my mustek I get no picture. Just white. And the brightness knob seems to have no effect at all. It might be even that something is wrong with the board somewhere. I'll have to fiddle with it later and see what I can find out.
  5. Ok. I'll try to get some better photos this weekend. I was able to get the crt to light up but haven't been able to get a picture to show when I hook any of the wires up to a video source. It just lights up very brightly but doesn't do anything else. I was able to find out that it's from a Panasonic OmniMovie VHS HQ camcorder.
  6. Here's that plug you mentioned. See anything familiar? I'm pretty ignorant when it comes to actually knowing what is what with these things.
  7. I got this really small viewfinder today and I know it works, but the cord that powers it and feeds the video into it is gone. The wires were all the same color anyway, but I forgot to have the fellow test to see which wire was the hot, ground, or video. The plug has seven contacts. Let's say the first contact on the left is Number 1. Does anyone possibly know what number connector I would find the hot, ground, and video input? It came from a JC Penney's vhs recorder. There is a number on the end of the circuit board. I'm providing pictures in case anyone should know. Anyways, it's free so I can afford to experiment a little. Thanx for any help anyone can give me with this thing.......
  8. I sent you an email through this website on how to contact me.
  9. What resolution does it record video in? What I do is run a Nikon 3700 digital through my wireless system. It records 640X480 and also transmitts the video back to my tv set. That negates the need for a CCD camera. It's built into the Nikon and the camera also records the flights. All I need external power for is the transmitter as the camera has it's own li ion battery.
  10. I sent you a pm about one I have. Is yours setup with the small SMA connector or a tv type F connector? The one I have uses an F connector.
  11. Those videos were recorded with my Nikon 3700. I only use a downlink for framing photos. If I wasn't flying around town someone here would invariably call me to see what's the matter......hehe
  12. Here is my aerial video website with a photo of my house and runway and the plane I use. http://www.skidrow-aerodrome.com/ Here is a link to my experiments with wireless video http://pg.photos.yahoo.com/ph/randall1959/...l1959/my_photos and here is a link to some of my aerial photographs http://pg.photos.yahoo.com/ph/randall1959/...l1959/my_photos
  13. It's about uav's. Thought you guys might be interested. http://www.newscientist.com/article.ns?id=dn3868
  14. Now I figured out where I was going wrong.........oops........I was dividing the bottom number by the top number.........my bad.......
  15. Oh ok......remember I said I'm no mathmetician Fractions were never my forte'. Thanx.
  16. Ok let me see if I got the math right. The watts were actually 4.75 4.75/12= .253 or 253 ma........correct?
  17. Thanx........I'm not much of a mathmetician. So in this case the current draw is 333ma? Cool, using my battery pack to power both the monitor and the receiver shouldn't be a problem. Thanx a lot!
  18. milliamps? Is there a way to figure it? I'm getting a small monitor that says 12 volts and 4 watts consumption. Thanx for any help in this matter.
  19. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewI...5763396850&rd=1
  20. That's what I was thinking. It should work the same upside down as right side up was my idea. I just haven't had time to try it and see what happens.
  21. Ok, thanx Mr RC CAM. I was wondering how that worked. I didn't realise that there was a top or bottom to the GP Patch. I just figured that your directions were for building the antenna and not for it's actual operation. I was thinking about trying it upside down on my helmet receiver combo so that it wouldn't stick up so far. Thanx once again
  22. Is there truly a top and bottom to the GP Patch or can you have it upside down, for instance? Also, why not have the connector in the center of the antenna? Is there a reason it's off to one side? Thanx.
  23. Thanx for posting this Keith. I'm in the process of acquiring something like this to help aim my camera for AP use. I have a video receiver and patch antenna mounted on a helmet and it will be easy to mount a small arm on it so that I can swing the crt over my glasses once I line up on my photo subject. I had thought about using one of those handheld 2 inch tv's but your idea makes more sense. With my "old" eyes trying to see a small tv up close is simply NOT an option But the crt idea gives me a way to focus the eyepiece so that I can have it allready set up and simply swing it into place. I'll basically have the same setup, although admittedly bulkier, that BW sells now. Thanx.
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