Artem's Friends

  • Gyrobot
  • Todd
  • Mikhail
  • Julien Dubois
  • Nick
  • Forrest Frantz
  • Rolf Blomgren
  • Shyam Balasubramanian
  • Tommy Larsen
  • Simon Howroyd
  • Rob_Lefebvre
  • emile 'butch' alline
  • Matthias Badaire
  • Michael Oborne

Artem's Groups

Artem's Discussions

New power module proposition

Started this discussion. Last reply by Artem Mar 5. 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. 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

APM Output Function

Started Dec 17, 2013 0 Replies

Hey, could someone point to me where can I find APM_RC library? Also, am I correct that this library includes functions which are used to control APM output? this is what I am trying to do:currently…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 ArduCopter-3.2 beta testing
"oh, sorry you were clear its just that when I saw your offsets I jumped to concluding that this is about the onboard compass (they are usually in that range) there is definatelly a problem with your external compass/GPS  module, I use an older…"
Nov 18
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"we were talking about the pixhawk onboard mag. if you have issues with your stand alone mag, this is is different. "
Nov 18
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"As you noted back than you could veeify only 2 weeks back. My cousine got his pixhawk from 3DR itself and still heating his screws helped to bring his offsets below 100. Also, the miniSD card slot+spring are made of steel, so its worth to demag them…"
Nov 18
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"If tou read back some N amount of pages there was a discussion about demagnetizing the screws wich held pixhawk inside the case. I suggest first demaging those. Apperently some units are being assembled with a magnetized screw driver, this leaves…"
Nov 18
Artem commented on Christiaan van Vollenstee's blog post DJI T600 Inspire - Hobbyking
"@ Rob. or use retracts :)   how much will it cost to repair after a small crash.... "
Nov 14
Artem commented on Paul's blog post DJI INSPIRE 1 in Action
"this is a sexy design, yes, but I wonder how much "play" a rough landing will introduce in all these mechanics..... and how many proprietary parts will need to be changed after a small crash?"
Nov 13
Artem commented on Paul's blog post DJI INSPIRE 1 in Action
"so, all of that mechanical complication (and extra weight) just to have retractable motors instead of the retractable landing gears?  I really like the camera/gimbal/hd downlink though this alone costs about 1.8k-2k.  "
Nov 13
Artem replied to Damo's discussion Large FPV Screen in the group ArduCopter User Group
"yes, it will work, but you need to keep in mind that not all DVRs are created equal :) many introduce about half a second delay, others hang a lot and to regain your video feed you need to restart them.  but there are pretty good ones too. "
Nov 12
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"What I noticed is that at some point after 3.2rc2, may be rc3 autotune started giving PIDs which made motors on my copters to pulsate in hover, as soon as any angle is requested pulsating stops.  no pulsation at default PIDs. "
Nov 4
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"is this for ppm (<2k) or for sbus too? Also, on my x8r setup I use channels 1-8 on the sbus and channels 9-16 on the x8r pwm outputs (x8r bind case 4...if I am not mistaken) and on my dtfuhf setup I output channels 1-8 via ppm and the rest on the…"
Nov 3
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"Is it possible to connect amothe mpu6k via I2c or SPI? "
Oct 31
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"Yes, I realise that noise cancelling is very tricky and this is why bose charges so much, however audio noise is much different from the michanical vibrations, mainly due to the frequences. In our applications AC handles high frequency vibrations…"
Oct 31
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"Also, the LED gets rather warm, which being close to the baro could contrebute to the alt variations.  Also, regarding the alt drop, on long+fast runs my copter drops alt heavily, however, when breaking fast it holds alt pretry well. Vibrarions…"
Oct 31
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"Randy, may I suggest something to you? Do you know how a noise canceling mic works on your cell phone? I assume yes you know, but will still explain: there are at least two mics one you speak in and the other one on the other side of the phone which…"
Oct 31
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"Thx for the reply, will have an opportunity to play with I term coming Saturday. "
Oct 28
Artem replied to Randy's discussion ArduCopter-3.2 beta testing
"I actually have experienced this (non-completed RTL) couple of times, and I do like to keep my tricopter tail very soft for better shots. Will try to see how far can I bump up my yaw rate p (right now it is 1.4) without affecting the softness of…"
Oct 28

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Comment Wall (3 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.

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