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Anyone explain harmonics?

Started this discussion. Last reply by Lew Payne Sep 7. 2 Replies

Hey folks,I have UHF for my RC and 1.2Ghz for my video on a Bixler.Do harmonics only affect higher frequencies?So my video signal wont interfere with my RC - but my RC might interfere with my…Continue

Tags: video, antenna, rc, radio, fpv

Troubles Arming after adding FPV gear to Quad

Started this discussion. Last reply by Finnius Aug 29. 2 Replies

Hey folks, I am having some issues arming my APM 2.5 quadcopter after adding some fpv gear to it.I have an Deadcat frame, with 1.2ghz for FPV, 900mhz for telemetry, and 433mhz for RC.I dont really…Continue

Tags: fpv, interference, arming, out, brown

9XR throttle too sensitive

Started this discussion. Last reply by Finnius Jul 23. 6 Replies

Hey folks,I have a 9XR that i just started using to fly my APM deadcat quad with.The problem is that the throttle stick is way too sensitive for me.I used to fly the quad with a cheaper radio set and…Continue

Tags: apm, deadcat, throttle, 9XR

Loiter Not Work

Started this discussion. Last reply by Finnius Apr 21. 27 Replies

Hey folks,I have an APM2.5 running on a SK450 with whatever the latest version of arducopter firmware is. Using a ublox gps and 900mhz radio telemetry modules with 2.4 for rc control.In stabilize…Continue

Tags: sk450, crash, loiter, apm, arducopter

 

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Latest Activity

Lew Payne replied to Finnius's discussion Anyone explain harmonics?
"What you're interested in is intermodulation distortion (IMD), something repeater owners (K7GOV) are keenly aware of... http://www.tcstx.com/software/intermod/intermodulation.htm 73's."
Sep 7
Finnius replied to Finnius's discussion Anyone explain harmonics?
"No one knows how harmonics in relation to radio waves work? Will the 1.2Ghz affect the 433mhz? Or only the other way around?"
Sep 2
Finnius posted a discussion

Anyone explain harmonics?

Hey folks,I have UHF for my RC and 1.2Ghz for my video on a Bixler.Do harmonics only affect higher frequencies?So my video signal wont interfere with my RC - but my RC might interfere with my video?Thanks so much!See More
Sep 1
Finnius replied to Finnius's discussion Troubles Arming after adding FPV gear to Quad
"Can i disable the compass? Using the MAG_ENABLE parameter or do i need the compass to control yaw, or will the accelorometers handle that?"
Aug 29
Finnius replied to Finnius's discussion Troubles Arming after adding FPV gear to Quad
"I also just got a 'Pre-arm check mag field' error. I wonder if it is getting these when i am trying to arm the quad. I never got those errors before - so how can my fpv gear be causing mag error, and how can i fix it if it is the problem?"
Aug 29
Finnius replied to joe boyle's discussion APM 2.6 will not arm when connected to 3DR telemetry radio
"I have sort of a similar problem - did you end up fixing yours. Here is my problem: http://diydrones.com/forum/topics/troubles-arming-after-adding-fpv-gear-to-quad"
Aug 29
Finnius posted a discussion

Troubles Arming after adding FPV gear to Quad

Hey folks, I am having some issues arming my APM 2.5 quadcopter after adding some fpv gear to it.I have an Deadcat frame, with 1.2ghz for FPV, 900mhz for telemetry, and 433mhz for RC.I dont really use the telemetry radios, so i am not worried about the the FPV at 1.2 being so close in frequency.I have one servo for tilt on the FPV cam that is running of my receiver which gets its power through the APM.When the servo is plugged in the APM goes crazy, mission planner 'ends unexpectedly' and it…See More
Aug 29
Finnius replied to Finnius's discussion 9XR throttle too sensitive
"I have heard that many people have problems with deadcat style of configuration. It has the front motors further apart - so the APM thinks the motor aren't where they are. Arducopter configuration doesn't have an option to specify the new…"
Jul 23
Bubba replied to Finnius's discussion 9XR throttle too sensitive
"I had the same issue and found this video 9XR Throttle Curve Using Expo It made a world of a difference. I haven't had any issues, but I am not an aggressive flyer "
Jul 22
Harry Gibson replied to Finnius's discussion 9XR throttle too sensitive
"I've never used the sonar - we have one, but didn't find it necessary. altitude hold is accurate to within a few inches without it so it would only be necessary if you want to follow variations in the ground surface at a fixed distance. I…"
Jul 22
Finnius replied to Finnius's discussion 9XR throttle too sensitive
"Perfect! Thanks for your input. Much appreciated. I will change the p accel value, possibly make two throttle curves, and i am also getting a sonar. That should sort out the throttle issues. But the deadcat still wants to fly forward all the time so…"
Jul 22
Harry Gibson replied to Finnius's discussion 9XR throttle too sensitive
"Hi,   I wouldn't really recommend doing it this way. It's probably ok in modes where the throttle is under manual control (i.e. stabilise) but not ideal in alt-hold, loiter etc.   In those modes your throttle stick is used to…"
Jul 22
Finnius replied to Finnius's discussion 9XR throttle too sensitive
"I think i may have this sorted out. I am experimenting with throttle curves, in particular the expo throttle curve on the 9XR which should hopefully give me a stable hover. I am also putting a sonar module on the quad to help in altitude hold…"
Jul 22
Finnius posted a discussion

9XR throttle too sensitive

Hey folks,I have a 9XR that i just started using to fly my APM deadcat quad with.The problem is that the throttle stick is way too sensitive for me.I used to fly the quad with a cheaper radio set and the throttle stick seemed great. I had too move the stick 'miles' to get it to change speed - which is what i like.Now with the 9XR i only have to move the throttle stick a few mm and my quad is shooting up through the sky. Also, today when i was flying the quad it was a bit too high in the sky so…See More
Jul 20
Finnius replied to Finnius's discussion Loiter Not Work
"UPDATE: Today i tested altitude hold mode and i love it! I am impressed with the way it works. However when i fly a bit mor"
Apr 21
Finnius replied to Finnius's discussion Loiter Not Work
"Hello again, I have put the APM in its black enclosure, it has black foam over the barometer and is nice and sealed up. I attempted to graph the same variables you graphed above for comparison (attached below). It appears that the altitude is now…"
Apr 19

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