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Temporary Insanity

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Everything posted by Temporary Insanity

  1. I can see that it made you dizzy. What I meant was if sequential encoding is used, then each eye would be subjected to 15 frames per second, alternately. My hunch is that flicker might be a problem. What do you think? Best, T.I.
  2. Sequential encoding is intriguing but I think it would return too few frames per eye to produce a quality experience. In addition, the cameras would have to be synced together. The brute force approach (twin cameras, transmitters, receivers and a monitor for each eye) seems the easy way, if not the cheapest way to success. T.I. PS. I will be returning to this experiment soon enough. I also have some video editing software that I believe can render 2 images side by side for viewing. We'll just have to cross our eyes to watch it. 8>)
  3. Yb2normal and I had experimented with this about 2 years ago and the initial results seemed very exciting. We never got to fly it due to weather and some of the equipment was on loan and had to be returned. None the less, I am very interested in continuing the experiment. I hope to put some testing together in the next 2 months and I will post the project and results as I go. T.I.
  4. I haven't tried it in the sun. They claim that the bright light performance has been improved and the software has user settable light compensation. BTW, the link to the review has some pretty good flight simulator demos.
  5. I bought one of those to explore it's use as a head tracker. It works really well for the intended purpose. It may work very well for those willing to do the hacking required. Here's what I found: It works by an IR filtered CMOS camera in the device using built-in IR LEDs spotting a reflective dot on either your forehead or a headband or cap . I didnt check to see if they pulse. There may be issues in full sunlight but I haven't checked on this. At least some of the tracking brains seem to be in the software so if you have a laptop in your system this could be a good way to do the job. My bet is that the camera is feeding USB video to the computer where all the magic happens, but I could be wrong. You would mount the sensor on your transmitter and it would register the alignment between your head and the transmitter. AKA no static drift. As some of you know, I did early experiments in this type of system and I found no downside to the head/transmitter alignment sensing arrangement. I did like the software which allowed extensive adjustment of the gain and complex response curves for both x and y separately. The software features two 3D heads which mimick first what your head is doing and second, what the gained and curved head is doing as a result of your settings All in all an interesting device that might work very well for someone that is willing to dig into the signals. Here's an interesting idea: this product supports Realflight G3 a popular RC flight simulator. One could "try it" by mounting it on the sim transmitter and "flying" the sim from the "cockpit view" while watching the video on video glasses hooked to the PC if you have the glasses/PC compatibility. Here's a link that reviews details on gain curves and such: http://www.screenshotart.com/index.php?act...s&CODE=03&id=12 I might sell my "Tracker 3 Pro" to an interested party. Contact me. Regards, T.I.
  6. Helmut and I had a pleasant discourse about the system and I came to some conclusions which I I'll share here: 1. Overall, I like this system and almost used it but chose in favor to the pyrometer (CoPilot type) instead 2. The isotope has a pretty short half-life of 170 days. This means semi-frequent replacement of the isotope. If not replaced the system tends to act more and more like a gyro instead of a wing leveler. 3. I thought it would be a better system if the long, high impedance coaxial lines were replaced with local, high quality opamps right at the sensor. These are cheap and available these days. I hope this helps!
  7. I'm reasonably sure that those transmitters do not transmit on the same frequencies as your Airwave receiver is tuned to*. To my knowledge, only Airwave transmitters are truly compatible. *The exception is channel #3 which is the same f for both Airwave and Lawmate (that sold be rangevideo and many others). Airwave: 2.414 2.432 2.450 2.468 Lawmate: 2.410 2.430 2.450 2.470 Best, T.I.
  8. Guys, This might help you. See this page for info on what the PCB trace should be for 50 ohms. The file must be saved and renamed to *.pdf before opening since I can't upload a PDF. Best, T.I. SMA_Edge_Johnson__Mouser__.txt
  9. It IS too bad there is no present-day equal to the old National Digi-Talker. It was almost too easy. Very high quality voiced words that are widely needed for instrumentation, pre-recorded in an easily addressed list. Toss in an address, out pops a human-sounding word. Even silences of various lengths had addresses. You'd think with today's cheap digital chips and short product development times, that chips like those would sell like hotcakes.
  10. Hmmm... I wonder what I'd have if I hacked into Prikupits' schematic and dropped in a dual axis, analog output gyro?
  11. I've heard of "flying under the hood" but never flying under the cardigin
  12. The only problem is that the doctor must remember to keep his eyes on the surgery and not continuously glance over at his favorite nurse's anatomy.
  13. A gyro on the ailerons is a good improvement. It's amazing how well it works. I don't think you will have as good an expereince putting a cap across the servo motor so wakewatcher's suggestion is a good one. I have a JR9303 transmitter with servo speed control
  14. Kilrah, I'm curious. There are several silicon gyros out there these days. What criteriea did you use in picking the one you picked? Was it the drift, or interface, etc? Thanks!
  15. I'm thinking about it. Have you got units ready to ship?
  16. Vrflyer. You're the only guy here that has one on his RC car. Could you try hooking the system to your steering servo? I'd like to see you steer it by looking right and left! Perhaps a brave soul would like to try to fly a plane with one on R/E.
  17. Yes, it's a 3.5mm jack. I'm not afraid to drill the case and install a second jack to bring out power.
  18. Kilra, It IS a good idea. Is there a JR compatible version?
  19. I had suggested the very slow correction because years ago, I used this idea to continuously auto-zero something entirely different than this application. While it did have some errors due to non-zero averaging--quite similar to what someone's head might do, it did a reasonable job and while it rarely got a perfect null, it never got too far off the mark either.
  20. Hi Kilrah, I've been watching this thread with some serious interest. As you might remember, I did some early work on head tracking and Vrflyer almost built one using my technique. I see that drift is an error that still creeps in with time. That is to be expected with a gyro. What I'm wondering is if the effects of drift can't be reduced or overcome by slowly, very slowly, adjusting the long-term average servo pulse width toward "zero" (1.5ms) regardless of the signal from the gyro. This works assuming that for the most part, the user's head angle will average at or near center. If not, the remnant error will likely come out to be small and the user will likely adjust his head to compensate without even being aware. The only time a gross error would occur in this sort of system is if the user keeps looking off to the same side for a very long time. What do you think? T.I.
  21. kilrah, If you go here, at the bottom of the page you will see software that just might do what you want. The camera, although obsolete, did have similar features and interface. http://rock2000.com/Company/Panasonic_Indu...al/GP-CX171.htm Good luck!
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