"guys, i still dont understand what is the relation between motor KV , propeller size and thrust,could you give some simple mathematic to convert motor KV and propeller size into thrust (its better if thrust in Newton)
thanks in advance"
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ARHEXA
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ARHEXA's Discussions
what Motors for heavy octa
Started Feb 2 0 Replies 0 Likes
Hello,I need a suggestion for motors for an heavy octa, that will be more powerful than the jDrones 2836 motors.I am using 12x45 props from jDrones, with 4S battery.i measured 1.75kg of thrust with…Continue
How to upload code (optflow test)
Started this discussion. Last reply by Randy Jan 27. 6 Replies 0 Likes
Hiim trying to upload the APOpticalFlow_test.pde to APM as written here:http://code.google.com/p/arducopter/wiki/AC2_OptFlow ive…Continue
Telemetry with Android phone ?
Started this discussion. Last reply by Roterdan Macedo Jan 16. 1 Reply 0 Likes
I'd like to use and Android phone for displaying the telemetry data,just like mission planner with the XBEE.is it possible ? how ?i just need to view the map, altitude, etc... no need for 2 way…Continue
OCTA-V vs traditional OCTA for AP
Started this discussion. Last reply by R_Lefebvre Jan 9. 18 Replies 0 Likes
Hi,I need advice on what airframe to choose for Aerial photography Octa.It will be carrying about 2.5-3.5 KG payload of gearWhat are your inputs on OCTA-V versus traditional OCTA (spider shape) ?I…Continue
ARHEXA's Page
Latest Activity
James Y. replied to ARHEXA's discussion how to choose motors for Quad ?"One of the main benefits of a quad is its mechanical simplicity. If you're talking about using variable pitch linkages on each of the four rotor systems, you've just gone and made an aircraft which is a lot more complex than a…"
ModeratorARHEXA commented on Jani Hirvinen's blog post jDrones News: Updates on original ArduCopter motors
"Good news.
just a small question - will you have a MORE powerful motor than the 2836 ?
"
JDronesJani Hirvinen replied to ARHEXA's discussion how to choose motors for Quad ?
"jDronesis best for providing those as we work with most of manufacturers and create new motors with them. Also original AC2830-358 and AC2836-358 motors are created but jDrones.
Original motors are now black to differentiate from clones. Also…"
martinvecchio replied to ARHEXA's discussion how to choose motors for Quad ?"in this case i would not looke for cheapest.
buying here is a way to support diydrones, they started the project.... ( correct me if i am wrong)
so even that ebay or other sources could you get it cheaper. is a nice way to support them…"
"if you want to use it for arial filming it will be ussles due to vibraton....why would you want to do that??? it will end up like this http://www.youtube.com/watch?v=rcubbloN4HU"
ModeratorARHEXA commented on Adam Amos's blog post Bottle Drop Updates
"you can use a zip-tie around the bottle and pierce a small hole in the zip lock band to use as the lock\release pin hole"
Richard replied to ARHEXA's discussion how to choose motors for Quad ?"It's grams measured using a spring balance against Earth surface gravity.
Thus 200g thrust will balance 200g against Earth surface gravity.
Everyone knows that grams aren't really a unit of force, but it's a simple way of measuring…"
ModeratorARHEXA commented on Chris Anderson's blog post APM 2 update -- Ordering reopened!
"how is it possible to connect an external GPS on APM2 with an onboard GPS ?
Thanks"
Donald R. Poole, Jr. replied to ARHEXA's discussion how to choose motors for Quad ?"Thanks for the clarification Jani. When looking at the thrust numbers, i'm a little confused. I'm used to seeing thrust measured in units of force, not mass. Are the grams suppose to read grams * m/s^2 rather than just…"
JDronesJani Hirvinen replied to ARHEXA's discussion how to choose motors for Quad ?
"Those values were per single motor."
Donald R. Poole, Jr. replied to ARHEXA's discussion how to choose motors for Quad ?"Jani,
Are these numbers per motor or do they reflect power and efficiency for all 4 motors together?"
ModeratorARHEXA commented on Jean-Louis Naudin's blog post Full AUTO-AUTO LANDING tests with the ArduCopter v2.4xp1
"does it use the sonar to auto land ?
it would be really cool to use the sonar:
drop fast while above 4 meters, then slow down the descend,
and do the last meter or 50cm really slow and gentle"
Anthony Bee commented on ARHEXA's blog post 3.3 million microFarads help your servos and reduces noise"If ur trying to sqweese more battery/flight time out of ur aircraft by using huge storage capacsitors, this is not gonna help...
A Capacity works like a shock absorber, and a storage place for current.
But it sucks every amp from ur battery that the…"
DeveloperR_Lefebvre commented on ARHEXA's blog post 3.3 million microFarads help your servos and reduces noise
"@ John, that is exactly what I'm doing. Just ordered 4 2S rated servos, and I'll round-file the UBEC. It's the simplest solution.
@Gareth, I have the large "voltage protector" from Hobby King, and it can power…"
DeveloperJohn Arne Birkeland commented on ARHEXA's blog post 3.3 million microFarads help your servos and reduces noise
"For this type of application (big servos) there is another solution that might be simpler and also give better reliability, by using less electronics. Get some "high voltage" (HV) servos that can be driven by a 2S lipo directly (or 2S LiFE…"
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ARHEXA's Blog
3.3 million microFarads help your servos and reduces noise
Posted on February 17, 2012 at 8:30am 11 Comments 6 Likes
This voltage protector offers 3,300,000 uF of energy storage in a small and lightweight package.
.
more powerful…
ContinueReal strobes for your plane !
Posted on August 6, 2011 at 6:00am 5 Comments 2 Likes
I personally don't like these constants LEDs very much,
how cool is that: a real xenon strobe like in real airplanes - for your RC plane !
I've flown with it last evening - it was AWESOME !
draws much attention...
can get it…
ContinueFind your UAV when it get lost - Dronecell and GPS
Posted on June 3, 2011 at 1:30pm 21 Comments 11 Likes
Following Chris' post about the dronecell, here is a first use i've made with it.
I combined a GPS, which is being read by a PIC controller, every X seconds, then every 5 readouts it will send the last 5 readings over SMS text message to my cellphone.
The idea is to…
Continue6 POS Mode Switch
Posted on June 2, 2011 at 5:30am 3 Comments 6 Likes
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Contests
Season Two of the Trust Time Trial (T3) Contest has now begun. The third round was a reliablilty/aerial photography round for both planes and copters, which is now closed. Stay tuned for the next round, beginning soon.A list of all T3 contests is here.
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