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Attention: RC-CAM.com will permanently shut down on August-08-2021.

The RC-Cam.com forum was the very first online community dedicated to the advancement of wireless video cameras on radio controlled (R/C) models. This is now called "FPV" (First Person View). We are proud of the contributions that our members have made to the FPV hobby.

We've seen significant changes over the last twenty years. Initially there were a lot of eager R/C hobbyist that built their own video systems. Allowing these creative individuals to share their work was the purpose of this site. Now the FPV market is flooded with low cost systems; Sadly DiY FPV video projects are now rarely discussed.

RC-CAM.com (main site and forum) will be closing down August 2021. This was announced several months ago (March 2021) to allow our members ample time to download any information that is important to them. After the site is shutdown the information will no longer be available here.

We appreciate every member's involvement with advancing the FPV hobby. It is indeed sad to say goodbye to all our online friends. Be safe and stay healthy.


Acetronics

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About Acetronics

  • Birthday 11/10/1956

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    N/O of France
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    Planes and Boat models.<br>Electronics around ...<br>3 Cylinder Kawa Bikes

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  1. Acetronics
    Hi, Audihere I do think the best method is mainly linked to the used compiler ... and functions offered. for the input choice ... Shmitt trigger looks fine BUT it is unusable with most of Futaba receivers ( Signal high level is 2.9 to 3.2 v ... GASP ! ) So TTL input is the most compatible with ANY receiver. TO ME, the most reliable and easiest way is pin polling ( i use PicBasic Pro ) with full software pulse measurement : glitches ( obviously outside the valid values !!! ) are always identified ...by a 0 returned. But C compilers do not offer such a function ... or you have to write your own assembler function Alain
  2. Acetronics
    Hi, Terry The best way is to have a perfectly tuned Tx/Rx couple ... I've tuned myself all my receivers to match my Transmitter HF Heads, and the result is my eyes ( pretty good sight ... ) are the only limit. I also tried flying gliders with a pair of Binoculars ... Radio is still working fine. so ... what else to ask for ??? ... Alain
  3. Acetronics
    Hi, Some months ago, on another forum ... same question went up ... a Dozen Guys measured their antennas lenght for "classical" receivers ( 9 known brands - 24 models); Funny ! from 26 Mhz to 72 Mhz ... same 1 meter length @ +/- 2 cm .... No comment. Now consider amplifying the RX incoming signal will add noise more than anything else ... Alain
  4. Acetronics
    Hi, Just found this one ... from EagleAir Australia. Alain expdiff.pdf
  5. Acetronics
    Hi, Did you just ask for a MkC PRO Password ??? It supports the '726 .... ( Free if you own a MkC License - otherwise 2k limited ). The PRO release also could spare some lines at compile time. But, it's you to decide ... Alain
  6. Acetronics
    Hi, Loïc Just a little scoping at the trainer port output will confirm ... don't you think ??? either way, some series resistance to limit current from the Pic is a good idea ... Alain
  7. Acetronics
    Hi, une fois Would this Help ??? http://lichtenberger.s.free.fr/OrdreVoies.htm Bien sûr, c'est en Wallon ... Alain
  8. Acetronics
    Hi, You can get it from here : http://www.gotronic.fr/catalog/actif/actif...regulateurs.htm bottom of page Alain
  9. Acetronics
    Hi, Mr CAM Perfect ! It was post #35. Thank you once more. Alain
  10. Acetronics
    Hi, Mr CAM Some times ago ( this year ), I had found a scheme with Logical circuits, the purpose was to reconstruct the serial input of RC decoders from the decoded outputs of a receiver ... YOU designed it ... I'm sure of that !!! But can't find it any more with the Forum SEARCH ... if it was ever published on this Forum. Could you give me a link to it ??? Many,many thanks Alain
  11. Acetronics
    Hi, Jean I made a rocket Launcher for my F14 GreatPlanes, 15 years ago, with 4000 CMOS Logic. I used then 2 channels, 1 locking channel, and 1 Channel for fire ( rockets are launched " serially" ). Plus to that, I use a PCM receiver... Of course, the two channel signals must be both Ok to allow firing. Never got any misfunction that way. You also could test for a very narrow "good" signal variation AND sampling 8 to 10 incoming signals ... but that implies "auto learning" programming of the switch points. Easy to realize ( I do it for all my devices, now ... ). Alain
  12. Acetronics
    Hi, Jean No, you can't : these false pulses can have any valid value in the 800 - 2200 µs range ... I observed it on the pulsemeter I built these days ... Th only "marker" of these false pulses is the not-steady duration. BTW this leads mes to ask you what you want to do ... as a project. ( Could be i.e. a "multi switch" device ... ). Knowing what you want to do will lead us to find how to prevent those false pulses ... Alain
  13. Acetronics
    Hi, Jean The safer way would be to verify the signal length : must be 800 to 2200 µs. The safest would be to verify if this filtered signal keeps the same value for, say a second or two. You'd be sure this is a valid signal ( supposing another transmitter on the same channel isn't turned ON !!! ) When using those signals for commutating devices, I read the pulse 4 to 10 times to be steady as a value before switching on ... one value outside the "gap" resets the counter ... 5 to 11 "outside" lead to the failsafe stubb of the program ... Alain
  14. Acetronics
    Hi, JF I do not want to be rude ... But you had it already done ( with 12F675 !!! and PCB draw. + parts placement ) in RC Groups Forum DIY section ... Alain
  15. Acetronics
    Hi, Mr Cam A PicBasicPro version of this utility ( for 12F6xx devices ) is also downloadable here : see : .melabs.com/resources/samples/12F675/PBP/RECOVER.BAS in the Labs X4 sample programs http://www.melabs.com/resources/samples.htm Alain
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