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Artem's Groups

Artem's Discussions

New power module proposition

Started this discussion. Last reply by Artem Mar 5, 2014. 7 Replies

Hi everyone! I would like to list two ideas (none novice or mine) which I hope will gain the attention of our community and result in 3dr introducing some new products and functions in the apm…Continue

Tags: halleffect, hall effect, voltage sensor, current sensor, 6s

MyFlyDream AAT and APM/Pixhawk

Started this discussion. Last reply by mP1 Feb 18, 2014. 2 Replies

Hi, I am seriously considering building an antenna tracker. However after some research and sourcing all the various parts/bits and pricing it all together I get a really "hacked-together" looking…Continue

noob question

Started this discussion. Last reply by Artem Nov 19, 2013. 6 Replies

Hi everyone, I've just finished building a tricopter, put an apm 2.6 with external mag/gps on a self made mast very far from any interference, but close to the CG my apm is directly on the CG. done…Continue

Tags: 2.6, apm

 

Artem's Page

Latest Activity

Artem replied to Randy's discussion Copter-3.3 beta testing
"DG any chance you flashed those with BLheli? "
8 hours ago
Artem commented on Chris Anderson's blog post Another good-looking APM-based crowdfunded drone
"@ Daniel, on the contrary, 35min is rather doable on a tricopter ;) I had one which flew on average 27min sometimes 30min and that was with retractable landing gear :) and a a heavy~ish gimbal + a really overkill servo which aloe weighed…"
yesterday
Artem replied to Randy's discussion Copter-3.3 beta testing
"A bit of a question here: has the way RSSI being reported in the mavlink been changed in 3.3? I have a strange issue when I setup up my RSSI pin 103 and range 3.3v MP shows correct rxRSSI, however minimosd shows constantly 0. I roll back to 3.2.1…"
yesterday
Artem commented on Chris Anderson's blog post Another good-looking APM-based crowdfunded drone
"I guess this is why tri frame configuration started receiving some love recently eeeh?  And yes, tri copters make wonderful AP platforms! I had one flying for more than a year on 6s setup giving 25-30min flights carrying a 3axis stabilized…"
Tuesday
Artem replied to leonardthall's discussion Calling all Tri-Copter pilots
"Leonardt, setting rate_yaw_filt_hz to 20 made the trick! it is much much better than the stock 5hz... but still not like 3.2.1  btw, here is a log of a short flight I had on 3.3rc10 with rate_yaw_filt_hz set to 20 I cannot comprehend the new…"
Tuesday
Artem replied to leonardthall's discussion Calling all Tri-Copter pilots
"yes, auto trim works perfect, just make sure you do it in 0 wind condition, I do it in an indoor basketball hall :D  0 drift if vibes are good and no wind afterwards...  "
Tuesday
Artem replied to Randy's discussion Copter-3.3 beta testing
"As far as I understood it is sort of a trim which adds to the absolute level I.e. when your FC is not totally parallel to the propdisc "
Monday
Artem replied to Randy's discussion Copter-3.3 beta testing
"Totally agree 3.1.5 had the best autotune right away.  Did you do 3.2.1 autotune with EKF enabled or disabled? "
Monday
Artem replied to Randy's discussion Copter-3.3 beta testing
"Disable it to hell, so annoying :) "
Sunday
Artem replied to leonardthall's discussion Calling all Tri-Copter pilots
"Try 3.2.1 it is the most stable f/w right now and with low enough Stab Yaw value doesn't wag unless you have some play in your yaw assy.  In 3.2.1 you need to adjust min/max pwm values for ch7  In 3.3 it is changed, but thee is a wiki…"
Sunday
Artem replied to leonardthall's discussion Calling all Tri-Copter pilots
"It used to be that ch7 on tri frame was hard coded to 50hz. Not sure if there were any changes, Leonard, can you verify? "
Sunday
Artem replied to leonardthall's discussion Calling all Tri-Copter pilots
"Leonard, is there a way to change servo pwm frequency?  As a lot of people use good quality heli servos some of those servo will greatly benefit from adjusting pwm frequency to 150 and sometimes even 300. "
Saturday
Artem replied to leonardthall's discussion Calling all Tri-Copter pilots
"Will try on Sunday tomorrow is going to be really busy for me. It is always packed in my car, so whenever I have time to FPV I do :) "
Saturday
Artem replied to leonardthall's discussion Calling all Tri-Copter pilots
"those bobbins last me over a year now :)  I cannot buy the replacements now.. since the seller doesn't have anymore of those and I cannot find 15mm m3 ones..  8mm m3 are really fragile.  I am now using blackout red bobbins+shim…"
Saturday
Artem replied to leonardthall's discussion Calling all Tri-Copter pilots
"Nope, not confusing. Yaw stab value."
Friday
Artem replied to leonardthall's discussion Calling all Tri-Copter pilots
"turdsurfer, I assume you are talking about firmware 3.2.1 or earlier as on 3.3 it is almost impossible to control yaw with yaw stab below 3.0. on AC 3.3 it seems that it takes a bit of time to build up the turning momentum. "
Friday

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Comment Wall (4 comments)

At 6:05pm on January 29, 2014,
MR60
Forrest Frantz
said…

What is your budget?

At 6:14pm on January 29, 2014, Artem said…

this is going to be for my "dream tricopter"  and thus I will be making some saving for this purpose, so if it is under 100usd than I think I could afford them....  so far I found NX-4006-530kv motors 67g 481g @ 3.35amp theoretically 

At 6:16pm on January 29, 2014,
MR60
Forrest Frantz
said…

Also, can I phrase the question as such:

Is there a rotor (motor and prop) that generates more than 430 grams of net thrust (500 grams less motor weight of 70 grams; thrust after the weight of the rotor is removed along with the additional weight of 2 grams per inch of prop over 10"), while sipping 43 watts or less (3 amps at a 4S voltage that varies between 10 and 17 volts)?  In other words, a rotor with an efficiency of about 10 grams per watt at 430 grams of net thrust.

Is it OK to word the question that way?  If so, then a 130 gram rotor generating 560 grams thrust at 43 watts would be OK as would a 50 gram rotor generating 480 grams of thrust at 43 watts.

At 5:33pm on June 27, 2015, Paul Atherton said…

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