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Jasper

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About Jasper

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    RC-Cam Visitor
  1. Did you manage to get this sorted out? I'm having the same problems with my 1.2Ghz 1w system. The Lawmate Rx outputs PAL video that displays perfectly on my cheap monitors and on the home plasma but the Marshall field monitor I use for FPV doesn't recognise the signal. I've tried connecting other PAL sources to the Marshal field monitor and it recognises and displays the alternative sources perfectly. It's obviously an issue with the composite video signal that the field monitor doesn't like. I'd love to get this sorted out.
  2. I posted this over in RC groups but perhaps it would be better suited here: In my quest to develop a decent helmet camera system I am trying to find a solid state DVR unit that will record video from a bullet cam in a format suitable for converting to DVD. When not using the helmet camera I would also like to use the same recording unit to view and record my video downlink for AP. I realise that this is not entirely an AP question but thought that since there are so many techno savy members here already using DVR's to record their video downlinks, someone might be able to give me some advise on the best possible recording option. I currently use a DV camera to record my video downlinks and the quality is fantastic. However, this is not exactly a lightweight option and I can't just attach it to my TX to view while walking around. So, for now, the DV cam is out. I figure that using solid state technology to record directly onto a multimedia media card (ie. SD/CF cards) I would not have to deal with the inherent problems faced when using a hard drive recorder in a high impact environment... such as head vibration leading to recording interuptions and eventually hard drive failure. There seem to be a lot of options out there for solid state recorders, most of which record in Mpeg-4 (.AFF) format. My minimum requirement would be the ability to record in at least 640 x 480 @ 30fps. Here are a few products that I've found could be viable options, both for helmet camera and video dorwnlink recording. Mobibox Recorder Positives: Phyical Size (pack of cards) & 96grams with battery Records 640x480 -AT-30fps Records to SD card Cheap at US$200 Negatives: Suggestions that company is being liquidated – No warrantee No remote Image quality (bitrate) unknown Archos Range Positives: High resolution (Full PAL) avaialble Nice small footprint / Lightweight Negatives: No good: Hard drives – Not solid State (bad for shock resistance) PV-500 Recorder Positives: Small and lightweight Records 720X480 @ 25 – 30fps LCD display Negatives: Price: US$389 Aiptek R-MZDV Positives: 720x480 -AT-30fps Cheap at only $189 Negatives: Unknown battery life Slightly larger than PV-500 Don’t need the cheap CMOS camera/lens RC Tek's upcoming DVR Positives: Full PAL in Mpeg 1/2/4! Small/lightweight Negatives: No LCD On the expensive side Has anyone had experience with any of these products? Are there any others that I may have missed?
  3. That's a really well put together Manual and Installation Guide there. I'm veeery impressed! And no I didn't spot anything goofy You mentioned that short range recievers should not be used and that only a high quality double conversion reciever would suffice. Does this include the JR R700 running on their ABC and W circuitry? Would an FMA reciever (with copilot) such as the FS8 provide a better solution?
  4. Understood.... gotta pay those bills! Looking forward to hearing about your progress
  5. Love your work Kilrah. I'm just ordering online now. I'll let you know how we go!
  6. Ahh I see! So does that mean that the only pre made board is the EVAL? And where did you see free samples? NI? My ears always prick up when I hear "free"
  7. Thanks Denis, I'm sticking with the 5V TX and camera for now but want to upgrade to the 12V in the future. I'm not a fan of the standard regulators due to their heat and inefficiency. I'm still trying to track down a LM2675-5.0. There seems to be many options for the one LM2675-5.0, such as LM2675M-5.0 LM2675MX-5.0 LM2675N-5.0 LM2675-5.0EVAL LM2675-5.0MDC LM2675-5.0MWC LM2675M-ADJ ARGHH, which one do I get?! Please excuse my ignorance
  8. How's this fantastic project coming along? Any sign of a release date yet?
  9. sorry people, I'm having trouble tracking down a decent store that sells single units of these regulators. Digi-Key had them for $4.00 each but then wanted me to pay $36 for shipping!
  10. Thanks for all your help Kilrah. Much appreciated I'll look into the LM2675-5.0 and let you know how it all pans out.
  11. So what's the best regulator to take a 3S down to 5V for my transmitter? I'm just going to run with a 5V camera off the transmitter for now.
  12. Thanks Kilrah. Since I'm running the ESC/motor of a 3S pack I think I might power the camera off that and have a seperate 2S pack for the transmitter with a single regulator. Does this sound like a more viable option? I'll be using the setup in heavily built up areas so was thinking that a powerfull directional antenna would help cut through interference from various wireless networks. I guess my motto has always been too much is better than not enough.
  13. Yeah I was a little hesitant with this setup too. I'd really like to keep weight to a minimum with a 2S, but if it means sacrificing video quality then I'll go with a 3S.
  14. I'd just like to start by saying what a great site this is! I only stumbled across it recently and have gained so much inspiration from it already . I'm currently setting up my first Wireless camera setup and was hoping to run a few questions by you all. My setup will be as follows: Blackwidow 600Mw 5V TX / 12V RX KPC650 High Res 12V camera 14Dbi patch antenna 2S (7.2V) 800Mah Lipo Battery DC-DC Boost Switch Regulator (for camera) DC-DC Buck Voltage Regulator (for transmitter) See attachment for simplified transmitter configuration. The KPC650 will be interchangeable with a Digital still camera for Aerial Photography so the Boost Regulator will be attached directly to the KPC650. Can anyone give me some advice on how well this would work and provide me with options for the voltage regulators? I would like to get the best possible picture, without any noise. Thanks in advance! Jasper.
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