First day out flying my new IRIS+ and I kept having DroidPlanner call out "Weak Signal". This is concerning because the copter was in a wide open field between 10' and 100' from me, most of the time around 30' in front of me hovering when it would give this warning... I am using the 3DR Radio for telemetry. I believe the correct way to troubleshot radio problems/interference is by graphing the RAD values from the Pixhawks logs correct? if so, that is what I did and took a picture to attach to this posting, I am not sure what I am looking at so can someone help and tell me if you see what is going on?

3691180954?profile=original

Thanks,

Matt

2015-02-16-radio_analysis.png

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • Hi Matt,

    I had similar issues with the stock rubber duck antennas so I made up some custom antennas by getting 2 standard wireless aerials from an old router, removing the rubber cover and soldering on a length of mig welding wire (to keep it rigid). Then pop a hole in the rubber cover and put it back on and vollia, for about 15 minutes work you can have 2 new monopole antennas. The important thing is that the total length of the unshielded wire is pretty accurate for your desired frequency.

    Have a look at this article for a simple 433mhz build http://fpvlab.com/forums/showthread.php?382-Sander-style-%28Ez%29UH...

    And a more general one for antenna design http://www.rcgroups.com/forums/showthread.php?t=1159968\ And really anything by IBCrazy on the rcgroups is worth reading.

    Anyway I can now fly over 1KM out and keep a reliable connection to the ground station, this is with literately 15 minutes work with a soldering Iron and a ruler, I didn't even remove the counterpoise or measure that accurately as I was heading out to fly when I made them.

This reply was deleted.

Activity

DIY Drones via Twitter
RT @chr1sa: After more than a year of only virtual races, @DIYRobocars returns to the newly renovated @circuitlaunch on May 22 for the resu…
Sunday
DIY Robocars via Twitter
RT @DAVGtech: And now available with LiDAR 🔥 https://twitter.com/Heavy02011/status/1381137016381964293
Sunday
DIY Robocars via Twitter
RT @Heavy02011: #VirtualRaceLeague: @DIYRobocars Race #9 - #ParkingLotNerds #thunderhillracetrack, CA Join us for the next race April 24th,…
Sunday
DIY Robocars via Twitter
RT @DWalmroth: Weather's finally cooperating, looking forward to racing 1:10 scale autonomous cars outdoors again! @diyrobocars, @NVIDIAEm…
Apr 7
DIY Robocars via Twitter
RT @AIDRI_: I finally succeeded in optimizing the trajectory and speed of a car on a #racetrack. Next step: implement a 2d controller and…
Apr 7
DIY Robocars via Twitter
@jetdillo @circuitlaunch Actually the second *in person* event in a year. We do virtual races every month
Apr 2
DIY Robocars via Twitter
Update: we're moving it back one day to Sunday (the 4th) at 11:00am instead
Apr 2
DIY Robocars via Twitter
@GrantEMoe @circuitlaunch Update: we're doing it on Sunday (4th) at 11:00am instead
Apr 2
Laurie J. Troy liked Jasper Kueppers's profile
Apr 1
DIY Robocars via Twitter
RT @chr1sa: Maybe we should have a mini @DIYRobocars race in our lower school's playground https://t.co/xLFeua1R6X
Mar 29
DIY Robocars via Twitter
If anybody wants to join us for an informal outdoors hack/race we're going to be meeting at the @CircuitLaunch park… https://twitter.com/i/web/status/1375907409223249923
Mar 27
DIY Robocars via Twitter
RT @SmallpixelCar: Ready to reopen, innovation has to continue. Inside/outside, LiDAR/GPS, race/delivery https://t.co/jpmvttoHEd
Mar 26
DIY Drones via Twitter
RT @DAVGtech: By far best race yet! Congratulations to the winner @Heavy02011 🥇🏆🍾👏👏👏 @diyrobocars @donkey_car @NVIDIAEmbedded https://t.co/…
Mar 20
DIY Robocars via Twitter
RT @Heavy02011: #VirtualRaceLeague: @DIYRobocars Race #8 - #ParkingLotNerds ⁦@DAVGtech⁩ ⁦@DWalmroth⁩ ⁦@OttawaAVGroup⁩ - join us tomorrow h…
Mar 20
DIY Drones via Twitter
RT @mrpollo: 11 years ago, the pxIMU was announced to the world on @DIYDrones, and it changed the life of many (mine included). The followi…
Mar 18
DIY Drones via Twitter
RT @ishcahealth: This is awesome! ☘️ @DroneDJ @DIYDrones @WorkerDrones @DroneMedia_UK @dublinaviation https://twitter.com/media_ireland/status/1372077878536462336
Mar 18
More…