eUGENE
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eUGENE's Groups

eUGENE's Discussions

Weird cpu load values

Started Mar 2, 2015 0 Replies

Hi,Nowadays I'm monitoring some values on pixhawk. Some values drew my attention.for example cpu load values like 45 ,51, 55, 61,34,61 ,2611, 45, 65, 2546 ......2611, 2545, 2511 etc. cpu load values…Continue

 

eUGENE's Page

Latest Activity

Hasufel commented on eUGENE's blog post Is it possible to beat drone jammers?
"Hi Eugene, you may investigate -- as Jordan hinted at -- dead reckoning. It would be enough to fly over their airspace (combined with RF shielding). Have a look at the inertial nav code in the APM code -…"
yesterday
Paul Bealing commented on eUGENE's blog post Is it possible to beat drone jammers?
"Our model club is adjacent to a site that has been operating 2.4GHz jamming on and off for the past 3+ years.  In my testing the only 2.4GHz RC that was immune is the Corona DSSS.  I have also been thinking about this for some time. …"
Saturday
Auturgy commented on eUGENE's blog post Is it possible to beat drone jammers?
"It’s trivial to defeat any non-kinetic anti-drone device I’ve seen available, but irresponsible to detail how on a public forum."
Thursday

100KM
Hein du Plessis commented on eUGENE's blog post Is it possible to beat drone jammers?
"Why are they allowed to transmit at those high powers and those commercial spectra but drones are regulated!"
Oct 12
Robert Pigeon commented on eUGENE's blog post Is it possible to beat drone jammers?
"Cell network communication. They jam cell network and they go to jail!  https://www.fcc.gov/general/jamming-cell-phones-and-gps-equipment-against-law"
Oct 10
kolin commented on eUGENE's blog post Is it possible to beat drone jammers?
"If they start jamming based on measuring near suspicious transmissions and not full time (FCC would not be happy about full time jamming everything) you could probably do it if your craft does not emit any recognizable RF signal. I use openLRS (on…"
Oct 10

Distributor
RC Tech.se commented on eUGENE's blog post Is it possible to beat drone jammers?
Oct 10
eUGENE commented on eUGENE's blog post Is it possible to beat drone jammers?
"its just a challenge for me :)no problem IR Lasers, laser diode array etc. Main problem is optical modem design in my opinion"
Oct 10
Andrew Doilidov commented on eUGENE's blog post Is it possible to beat drone jammers?
"BTW, how big is your bet? %-)"
Oct 10
Andrew Doilidov commented on eUGENE's blog post Is it possible to beat drone jammers?
"80m for a camera! How about an IR receiver? I know that simple TV-B-Gone kit can kill a TV from 150 ft. Now imagine an array with properly designed LED driver?"
Oct 10
eUGENE commented on eUGENE's blog post Is it possible to beat drone jammers?
"80m (262 feet) not enough :) "
Oct 10
Andrew Doilidov commented on eUGENE's blog post Is it possible to beat drone jammers?
Oct 10
eUGENE commented on eUGENE's blog post Is it possible to beat drone jammers?
"No, there is not any ir jammer. I know, IR is optical but I have to reach jammed area . I mean, I need very powerful IR LED array :)"
Oct 10
Andrew Doilidov commented on eUGENE's blog post Is it possible to beat drone jammers?
"What jammer? Do they jam IR now? IR is optical, all you need is LOS and powerful enough array."
Oct 10
eUGENE commented on eUGENE's blog post Is it possible to beat drone jammers?
"Andrew: what about the range? jammer easily reach to 1000m or more"
Oct 10
Andrew Doilidov commented on eUGENE's blog post Is it possible to beat drone jammers?
"Switch to IR. Big array of IR LEDs blasting PPM from your transmitter and 4-8 standard IR receivers ORed and feeding your PPM directly into your controller."
Oct 10

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Comment Wall (1 comment)

At 8:17am on June 12, 2015,
MR60
Forrest Frantz
said…

Tiger makes excellent products and has good data.  Build an Excel worksheet and enter the 4004 data and 3508-380 efficiency:

- first enter the weight of each motor

- next enter the lift column of each motor

- next subtract the mass of the motor from the lift (getting net lift)

- line up the two net lift columns

- add the watts to two more columns

- calculate net-lift efficiency (net-lift / watts)

- you can not compare the efficiency of two motors that way

- the 3508 is capable of a 1 hr flight in mission (race, photography, etc.) conditions

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EUGENE's Blog

Is it possible to beat drone jammers?

Posted on October 9, 2017 at 3:30am 28 Comments

Hi everyone,



I just made a bet with some local professional jammer manufacturer who is too confident with their product. 

I'll take them out if I can manage a flyaround over their premises.

Their product is no joke though. As far as I could understand, it scans the entire spectrum and jams the suspectable frequencies but obviously there's something more to it which they won't tell me.…

Continue
 
 
 

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