FPV skref #1

[Árni H]

Settu ljós á þetta gadget og fljúgðu í myrkri í kringum húsið hjá Magnúsi Skarphéðinssyni - þá verður fjör

[Valgeir]

Start with the bare essentials and add equipment one step at a time. after each new equipment was added do proper range- and stress tests.
Do not fly with a video system that is capable of outperforming your R/C system in terms of range
Do not fly with a R/C frequency higher than the video frequency (e.g. 2.4GHz R/C, 900MHz video).
Monitor the vitals of your plane (R/C and battery). Flying with a digital link without RSSI is dangerous.
Do not use 2.4GHz R/C unless you fly well within its range limits, in noise-free environments and always within LOS. since this is most likely never the case, it is recommended to not use 2.4GHz R/C systems.
Do not fly at the limits of video. if you see noise in your picture, turn around and buy a higher-gain antenna before going out further.
Shielded wires or twisted cables only. anything else picks up RF and can cause problems
When using powerful R/C transmitters, make sure your ground station equipment is properly shielded
Adding RTH to an unreliable system does not increase the chances of getting your plane back. Work on making your system reliable without RTH first, then add RTH as an additional safety measure if you must. At this point you will most likely realize RTH is not required.
Avoid powering the VTx directly. step-up or step-down the voltage and provide a constant level of power to your VTx, otherwise make sure your VTx runs reliably until the battery dies. Try to avoid 12V VTx on 3S systems.
Do not power your camera directly unless it works along the complete voltage range of your battery. step-up or step-down the voltage and provide a constant level of power to your camera. make sure your camera runs until your battery dies.
A single battery system is safer. 2 batteries in parallel to mitigate further sources of failure. reverse current protection is recommended, but usually not feasible
For maximum video range, use 2.4GHz video with high-gain antennas
When flying with R/C buddies that fly on 2.4GHz, or when flying in cities, it is perfectly possible to use 2.4GHz video provided you stick to the channels that do not lie in their band (ch5 & 8 for lawmate)
Do not use diversity as a replacement for pointing your antennas. diversity should be used to mitigate polarization issues
Improving the antenna gain on the receiver end is better than increasing the output power (except in RF-noisy areas). 500mW is plenty of power, more tx power causes more issues with RF on your plane.
Do not buy the cheapest equipment unless it is proven to work reliably (e.g. capacitors falling off, multitudes of bugfix firmware updates, community hacks and mods are a good indicator of poor quality and something you do NOT want to buy). Saving $50 is simply not worth losing your plane.


Þetta er texti sem team blacksheep fpv eru með sem leiðbeinigar fyrir byrjenda. Þeir sem vita ekki hverjur þeir eru að þá géta þeir skoðað videoinn http://www.youtube.com/user/nastycop420. En þarna kemur fram til dæmis að ekki sé gott að vera með flugvélina á hærri tíðni en fpv græurnar t.d. að vera með 1.3 ghz fpv græur og 2.4 á flugvélinni þannig að þeir sem eru með 2,4 rc græjur ættu að fá sér 5,8ghz. En þeir sem eru að fljúa á 35mhz géta notað 1,2 1,3 og 2,4. einnig er minst á að ekki sé gott að nota yfir 500mw til að forðast að trufla sjálfann þig þó að þú sért á annari tíðni.