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philthyy

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About philthyy

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    RC-Cam Regular

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  • Location
    White Salmon, WA
  • Interests
    UAVs, all things RC, robots, electronics, model rocketry, mountain biking, hiking, camping, kite surfing.
  1. philthyy

    Are ground FPV vehicles allowed?

    I've been having alot of fun with a Traxxas Slash set up with a 500mW 1.2ghz video system. Using stock whip on the Vtx and an optimezed 8dbi patch on the Vrx. I'm amazed at the video clarity I get out past 600 feet, even with small trees and a small building in the way! I usually just set the patch on the ground, leaning up against my "groundstation" (Cardboard box...heh). It works, but now I'm looking into building my own SPW for the Vtx and Crosshair for the Vrx. Hopefully they will improve video quality AND range. I'm using my Futaba 9C airplane transmitter for control, with a Corona 72mhz synthesized Rx. Awesome range!
  2. philthyy

    Help controlling transistors/leds

    Thanks! That is an awesome site! My LED strip has 60 LEDs on it. It is from Hobbyking and they rate them at 400mA. I will be running two strips initially, and later adding two more strips. My ring counter has four outputs, and I would like to have a full LED strip on each output.
  3. I am currently attending college for an associates degree in electrical engineering and was hoping for some help on one of my school projects. I am building a ring counter using a standard TTL IC (I forget the number on the chip just now) and I want to use it to control some Hobbyking LED strips I am installing on my Parkzone Stryker. The problem is that the LED strips need 12 volts and my IC only puts out 5 volts. So I was thinking of using the output from the IC to control a transistor to switch the 12 volts to the LEDs. Would this work, and if so do I need to limit the voltage/current from the IC to the transistor? And what transistor should I use? Thanks!
  4. Interesting discussion. I've often wondered if the sheer physical limits of digital wireless transmission keep this from moving forward. The limits as i see them (and I have only the tiniest grasp of these things) are latency (due to encoding and processing) and the fact that digital video doesn't play nice when the signal gets weak. With an analog system, we just slowly get video deterioration, which we can fly through. With digital, you get full picture hangs, or worse. So, I wonder if the answer for this is a side by side system using digital for flying real time with high resolution and the analog running on a small separate screen as a back up in case the digital link fails?
  5. philthyy

    Help finding SMT voltage regulator

    Thanks for the reply and ideas. What about finding another product with a Seiko vreg in it I could steal? Any ideas?
  6. So about a year ago I bought a VSN505 camera, knowingly ordering the 5 volt version as it isn't as noisy as the 12 volt one. I didn't install it in anything until recently, and up to this point all of my video transmitters and cameras have been 12 volt systems. To make a long story short, I stupidly forgot my VSN505 was a 5 volt camera and just hooked it into one of my 12 volt wire harnesses. Sooo, I found only one visible burned part on the board, which is a 3.7 volt LDO voltage regulator. Manufactor part number is S-1131B37PD-N4WTFG. It is available at digikey, but only in orders of 3000 or more. Obviously not an option. Anybody know where I can find this regulator? Here is the link to the Digikey page: http://search.digikey.com/scripts/DkSearch/dksus.dll?lang=en&site=US&WT.z_homepage_link=hp_go_button&KeyWords=1B37P
  7. Yeah, extra weight is always enough to make me nervous. At least from what I've read, the Telemaster is a really gently flier, so that should help keep me somewhat calm. Does anybody have a suggestion for a GPS autopilot that is somewhat plug and play? I'm pretty sure I could work my way through any reasonable difficulties getting one to work with a Telemaster, but if it requires all kinds of custom programming, I doubt I'll be able to get it to work.
  8. See, now, its threads like this that make me think the Electro Telemaster should be my next FPV plane. I'm currently using a highly modified Slow Stick and an Easystar. Both are very nice for FPV, but I plan on adding all kinds of electronic goodies to my next FPV platform, which adds weight. Seems like the Electro Telemaster should be easily up to the task of carrying additional weight. I'm planning on having an OSD, multiple cameras, and a return to home device. Oh, and maybe a super high capacity battery. Something like 7-8000 mah. Would like at least a safe 45 minutes of flight time. You guys think this is possible with an Electro Telemaster?
  9. Heh heh. Been following this post and learning lots by the bantering. I love this site. (Tongue on chin)
  10. Ivspark, have you thought of using an OSD? Seems like a pretty sweet way to tell altitude and onboard battery voltage and other essential info. I'm planning on getting one soon. Getting my tax returns and going SHOPPING! WHOO HOO! Gonna buy video goggles and 900mhz system with a patch antenna and maybe an OSD, although that might have to wait a couple weeks.
  11. Awesome! Man you were way up there! What video goggles do you use? Do you like them? Any idea how high you were on that first video?
  12. Thanks for the great info, Helipirate! yeah, I figured the 900mhz band would work better even with objects in the way. Sounds like it will perfect for RC cars too.
  13. Well, I'm in the US, but its possible they are extremely expensive here, too. I'm definitely going to keep looking for a good MiniDV camcorder that will work...checking craigslist daily!
  14. I'm following along with this thread(as I often do. Who, me, lurk?) and I'm very curious about these problems you're running into. What frequency is your controller? 72mzh? 50mhz? I am thinking that an electro telemaster might just be my next FPV platform, so this thread particularly interests me. Good luck Wavess!
  15. Thanks Peaps! Yeah, I've been learning quite a bit about 900mhz compared to 2.4 and I've decided to go with the 900mhz. I was thinking of ordering it from Rangevideo, as I've ordered a variety of stuff from them before and have always been pleased with thier products and service. Does anybody know who makes Rangevideos 900mhz stuff? Is it Lawmate?
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