FPV HUB
Advanced search  

News:

Who's Online
  • Dot Guests: 73
  • Dot Hidden: 0
  • Dot Users: 1
  • Dot Users Online:
* Site Sponsor
* Random Gallery Items
raptor50 (2)

Views: 614
Posted by: mattydred
in: raptor 50
DVR

Views: 850
Posted by: Coyote
in: Coyote`s Album
LEYSY Y PONTIAC 020

Views: 1909
Posted by: COKE32
in: FPV SPAIN
py-x4

Views: 881
Posted by: JOMA72
in: quadcopters
* Latest Gallery Items
IMAG0786

Views: 2260
Posted by: Njoro
in: FPV Stuff
Ground Station

Views: 2906
Posted by: Njoro
in: FPV Stuff
IMAG0165

Views: 2755
Posted by: Njoro
in: FPV Stuff
IMAG0161

Views: 1648
Posted by: Njoro
in: FPV Stuff
zeroG Raptor

Views: 1985
Posted by: Njoro
in: FPV Stuff

Author Topic: understanding the numbers  (Read 1324 times)

Animal brown

  • Flying officer
  • *
  • Karma: 2
  • Offline Offline
  • Posts: 59
understanding the numbers
« on: July 19, 2017, 11:33:09 PM »

Hi
   I am interested if anyone has a link that would give information that would help explain how to understand the numbers and features displayed on an osd (im using cyclops storm).
I am fairly new to fpv have just started flying with a new set up and am wanting to get comfortable with my system and in particular learn to understand what the battery levels and rssi etc are telling me so I can make sure I don't leave myself to far out with a lack of battery and so on.
Im feeling my way at the moment going between line of sight and fpv with a friend spotting for me but am spending more and more time in the goggles and would like to push out a little further but safely.
I have spent a lot of time searching for answers but have only found a few hints here and there.
all the best steve
Logged

Steve W

  • "The Gaffer"
  • Marshal of the Royal Air Force
  • *
  • Karma: 272
  • Offline Offline
  • Posts: 11411
  • ^ not actual size
    • DroneFinder
Logged

Animal brown

  • Flying officer
  • *
  • Karma: 2
  • Offline Offline
  • Posts: 59
Re: understanding the numbers
« Reply #2 on: July 20, 2017, 08:18:48 AM »

Hi Steve W
               I already have the manual what im really looking for is just how to understand things like at what voltage should I be returning on landing etc. I can't seem to find a page that talks about it too much. I did find one on here where members talked about 10.5v, 10.3v but that was about it.
http://www.fpvhub.com/index.php?topic=15665.0
Logged

Steve W

  • "The Gaffer"
  • Marshal of the Royal Air Force
  • *
  • Karma: 272
  • Offline Offline
  • Posts: 11411
  • ^ not actual size
    • DroneFinder
Re: understanding the numbers
« Reply #3 on: July 20, 2017, 12:03:13 PM »

Well it depends what battery you're using.

3.3v per cell is the absolute minimum for a lipo, so you should be looking to land above 9.9v (on 3 cells) or 13.2v (for 4 cell) - but I wouldn't go that far, I'd be aiming for 10.2v or higher on 3 cell, or 13.6v on 4 cell.

However the more throttle you're applying, the more amps will be coming out of the battery so your voltage will drop - if you reduce throttle the voltage will recover. So you need to find a balance - if you're cruising (i.e. low power) and the voltage is approaching the minimum, it's probably time to land ASAP. If you're on climb out and at full throttle then the voltage will be reading low - so monitor it  to prevent it from going too low, then ease off the throttle and you'll see the true battery voltage remaining.

This is just something you'll get familiar with the more you fly and no two batteries behalf the same.

Basically... if you're cruising and you're approaching the minimum level, come home. If you're climbing and approaching the minimum voltage, ease off the throttle and see where you're at - if it doesn't come back up, come home. If it does, estimate how far you can go. Make sure you fly upwind though so if you run out of power the wind will push you home :)
« Last Edit: July 20, 2017, 12:16:19 PM by Steve W »
Logged

Loopdreams

  • Air Commodore
  • *
  • Karma: 33
  • Online Online
  • Posts: 2126
Re: understanding the numbers
« Reply #4 on: July 20, 2017, 12:05:50 PM »

Just one thing, do not trust the Storm's "amps used" display.  It's made of lies.
Logged

Billy_boy_2010

  • Group Captain
  • *
  • Karma: 25
  • Offline Offline
  • Posts: 1794
Re: understanding the numbers
« Reply #5 on: September 09, 2017, 12:57:15 PM »

Some of the numbers on OSDs/autopilot are accurate. Others less so. Some can be calibrated to make them more accurate.

The location to home and distance are IMO the most important and these are always pretty accurate  (provided you waited for a decent number of satellites and set home correctly).

The voltage is normally pretty good. Remember voltage drops if you're taxing the battery in a faster model- so will frequently recover a bit on landing/throttle off. The mah use is frequently way off. Don't rely on it unless you know it's accurate.

Rules of thumb are you shouldn't exhaust a battery- keep 20% of it's capacity in reserve. And don't drop the voltage too low- keep 3.6 volts per cell minimum. Ideally a bit more.

RSSI can be a bit of a curse. It's easy to obsess over it and it can hamper the experience.
Logged

Billy_boy_2010

  • Group Captain
  • *
  • Karma: 25
  • Offline Offline
  • Posts: 1794
Re: understanding the numbers
« Reply #6 on: September 09, 2017, 01:00:14 PM »

If you're going to push the distance a bit- do it on a fresh battery. Fly upwind so the return journey is easier. Make sure you have RTH set so if you do lose signal you can get it back. Make sure its failsafe settings are set to RTH. Easy :)
Logged

Animal brown

  • Flying officer
  • *
  • Karma: 2
  • Offline Offline
  • Posts: 59
Re: understanding the numbers
« Reply #7 on: September 09, 2017, 07:15:31 PM »

Thanks Billy_boy have everything set and failsafes all working just waiting for some weather. Have managed just under 3km recently which was fun and my set up worked as it should.
                       
















Logged

Billy_boy_2010

  • Group Captain
  • *
  • Karma: 25
  • Offline Offline
  • Posts: 1794
Re: understanding the numbers
« Reply #8 on: September 11, 2017, 01:08:00 AM »

Thanks Billy_boy have everything set and failsafes all working just waiting for some weather. Have managed just under 3km recently which was fun and my set up worked as it should.
                     

Ah you're nearly there then.

First step is flying with the plane out of earshot.

After that it's a question of how much money you're prepared to spend on kit and how easily bored you get. Long range can be quite dull.
Logged

Animal brown

  • Flying officer
  • *
  • Karma: 2
  • Offline Offline
  • Posts: 59
Re: understanding the numbers
« Reply #9 on: September 11, 2017, 09:26:43 PM »

yeah, the out of earshot thing was a bit weird the first time it happened but the second time I was expecting it so didn't worry as much.
I posted my first flight a few weeks ago. was only around 1.7km but was fun. I have also maidened my mini talon which was even more fun. Just wish the weather would play ball so I could get out again
Logged
 

* Recent Topics
Kingkong / LDARC FPV Egg Pro 138mm - no Power to FC by ched
[Today at 12:48:36 AM]


FPV TIME SHIFT: Flying the same park through 4 seasons in one seamless edit by War Chest
[July 20, 2018, 07:55:50 PM]


E.T.s Martian 2 Round the fields in HD. by ched
[July 20, 2018, 05:28:15 PM]


Most realistic Sim for fpv quadcopter learning acro? by ched
[July 20, 2018, 12:18:21 AM]


Phantom 2 Vision + by BigT
[July 19, 2018, 10:02:16 PM]


Heavy Metal by urbanfpv
[July 19, 2018, 02:09:45 PM]


E.T.s Martian 2.....A Fun Day Out. by ched
[July 19, 2018, 12:03:06 PM]


Hi from Richmond! I'm looking for a club and like minded geeks :) by steve_eulat
[July 18, 2018, 10:57:43 PM]


What is your best Youtube comment? by Coyote
[July 18, 2018, 07:48:16 PM]


No joystick flying by Loopdreams
[July 18, 2018, 12:23:27 PM]


Having a nose around the new manor by drambuidhe
[July 18, 2018, 11:44:22 AM]


Decisions decisions by English Turbines
[July 18, 2018, 11:36:04 AM]


E.T.s Martian 2...... Testing a friends Taranis X9D by English Turbines
[July 17, 2018, 06:02:19 PM]


Cut my antenna 💩 by Coyote
[July 16, 2018, 10:33:52 PM]


Air Navigation (Amendment) Order 2018 - Guidance for small unmanned aircraft use by Steve W
[July 16, 2018, 05:48:15 PM]

* Keywords
fpvhub  fpv hub
first person view video piloting

rc r/c r.c. model aircraft flight pilot fpv piloting wings fly flying flight fuse fuselage aileron tail pan tilt tx rx vtx rtx receiver transmitter video radio control controlled headtracker fpvuk bfpvmfa fpv uk first person view video piloting fpv servo servos easystar easy star multiplex antenna VR1400 fatshark video goggles 2.4 5.8 1.2 900 ghz mhz uhf panel antenna circular fpv polarised tracker dbi 10mw 100mw 500mw camera osd fpvuk bfpvmfa fpv first person view video piloting downlink ezantenna tracker gps EzOSD current sensor tiny telemetry autopilot ccd gopro kx131 kx171 FY21 FY21A FY21AP II IMU oracle diversity processor video switcher fpvuk bfpvmfa fpv uk first person view video piloting insurance simulator delta wing glider funjet quadcropter helis heli helicopter electric nitro scratchbuild scratch build batteries battery 2s 3s 4s lipo lipos fpvuk first person view video piloting Antenna fpvhub  fpv first person view video piloting rc r/c r.c. model aircraft flight pilot fpv Airframe Artifical Horizon Auto pilot Av AWG AWU Bec Brownout Buddy box C rating CG Circular Polarized Data logger Dbi Dbm Dipole Diversity DVR Easycap EPO EPP Failsafe FM Freshnel zone Frequency Gain Ghz Goggles GPS Ground Station Gyro Head Tracker HD Hz Inverted Vee Jst LC Filter Lipo LUX Mah Mhz Omni OSD Pan Patch Platform Polarization Rssi RTH Servo Spotter Telemetry Tilt Tracker Transmitter TVL Ubec UHF Video Splitter Vrx Vtx Watts Yagi  fpv uk first person view video piloting rc r/c r.c. model aircraft flight pilot fpv

http://www.fpvhub.com/forum/index.php?action=sitemap;xml http://www.fpvhub.com/forum/index.php?action=sitemap http://www.fpvhub.com/forum/index.php?action=sitemap;start=0 http://www.fpvhub.com/forum/index.php?action=sitemap;start=100 http://www.fpvhub.com/forum/index.php?action=sitemap;start=200 http://www.fpvhub.com/forum/index.php?action=sitemap;start=300 http://www.fpvhub.com/forum/index.php?action=sitemap;start=400 http://www.fpvhub.com/forum/index.php?action=sitemap;start=500 http://www.fpvhub.com/forum/index.php?action=sitemap;start=600 http://www.fpvhub.com/forum/index.php?action=sitemap;start=700 http://www.fpvhub.com/forum/index.php?action=sitemap;start=800 http://www.fpvhub.com/forum/index.php?action=sitemap;start=900 http://www.fpvhub.com/forum/index.php?action=sitemap;start=1000 http://www.fpvhub.com/forum/index.php?action=sitemap;start=1100 http://www.fpvhub.com/forum/index.php?action=sitemap;start=1200
* Disclaimer
The content, views and opinions expressed within this forum are those of the authors and do not necessarily reflect the views, official policy or position of FpvHub. However, we reserve the right to remove or edit any content considered inappropriate.