thUndeadMod v3.4 - openLRS S**T just got real :)

[SouthPawPaul]

Probably not very well as the red lost packet light indicated on my system.

I picked up an OSD today so I can hopefully monitor RC link.

[SouthPawPaul]

I do accept that flying so close to two high power UHF systems probably wasn't my brightest idea, but the copter starting up took me by surprise.

[papa_lazerous]

I do accept that flying so close to two high power UHF systems probably wasn't my brightest idea, but the copter starting up took me by surprise.

I'm amazed a multicopter could arm itself by accident, as interference is generally random twitches but you need a definate throttle down and rudder over movement for several seconds to stop it happening by accident

Just a thought,  the Bounce is this weekend...... Thats the only place I can think you would be with sooooo much UHF in one place.  Am I right?  I follow the UK thread on RCG from time to time I saw it on there during the week

[SouthPawPaul]

Yes this happened at the Bounce meet today.

[papa_lazerous]

Yes this happened at the Bounce meet today.

Did the weather hold out? it seems there may need to be a system of having a flag board like in the old days to stop problems happening

[SouthPawPaul]

The weather held out fine. Started cold, but by lunchtime the sun was shining and we had a good few hours of gorgeous sunshine. Wasn't too windy and it was probably just right.

We did have a kind of frequency control system that worked reasonably well. The trouble is, is it's not really an organised funfly with no one wanting to take the responsibility of policing a frequency peg board

[papa_lazerous]

I hope you geta good flight in soon as I hold the record right now on orls on Uk legal frequencys ;)

[Devonian]

I tested my v1 system with a 500mW UHF transmitter right next to my receiver and it didn't glitch at all and my OLRS system was still responding to inputs/outputs.  This was a couple of itterations ago of thundeads firmware.

I'll need to re-test on the latest version.
It might be a while before I can do this though.

Seems very odd that another system can appear to have taken control of your system.
As Mihai points out, you really must change that header to something unique to you (not the default DoMo as generated by the configurator software).

Nigel.

[ghost2212]

I have used my openLRS kit with the thundead fw very successfully on my own out to about 250-300m.

I just had this one issue when there was a lot of other UHF activity.

I wonder how well any UHF system on 100mW power would perform beside several other systems outputting 500mW

We ran the openLRS on 435 with no frequency hopping and it performed faultlessly despite other UHF systems being on etc.

1.7km no problem and RSSI was still pretty high.

Was less than 50m and sometimes less from the other UHF users.

[papa_lazerous]

I have used my openLRS kit with the thundead fw very successfully on my own out to about 250-300m.

I just had this one issue when there was a lot of other UHF activity.

I wonder how well any UHF system on 100mW power would perform beside several other systems outputting 500mW

We ran the openLRS on 435 with no frequency hopping and it performed faultlessly despite other UHF systems being on etc.

1.7km no problem and RSSI was still pretty high.

Was less than 50m and sometimes less from the other UHF users.

Where you at the same place at the same time Ghost? And when on 435 where you using Thundeads FW?  This might help narrow down what was going on a little

[ghost2212]

I have used my openLRS kit with the thundead fw very successfully on my own out to about 250-300m.

I just had this one issue when there was a lot of other UHF activity.

I wonder how well any UHF system on 100mW power would perform beside several other systems outputting 500mW

We ran the openLRS on 435 with no frequency hopping and it performed faultlessly despite other UHF systems being on etc.

1.7km no problem and RSSI was still pretty high.

Was less than 50m and sometimes less from the other UHF users.

Where you at the same place at the same time Ghost? And when on 435 where you using Thundeads FW?  This might help narrow down what was going on a little

Same place apart from about 50m difference, Not necessarily the same time though i flew through most of the day and while numerous other UHF users were flying. Using thundeads latest FW. We had trouble on 435 with the latest firmware with it occasionally glitching for a second then returning to normal. It wasn't range related and switching to non frequency hopping stopped it. It was almost as if the receiver and transmitter were getting out of step.

Need more testing really to confirm this and we will hopefully do some 459 testing as well both non hopping and hopping.

Brett

[papa_lazerous]

Thats interesting to hear, strange how you werent getting as many problems as southpawpaul.  I wonder if there could be setup related issues creeping in.  I have found this FW to be pretty good for locking back on after losing sync, but flying the skywalker is different to a fast aircraft or a multicopter where a solid link all the time is needed.  I havent lost a link but if I did for a second or two it wouldnt matter.  Perhaps for those using multicopters a no hop or limit to 3 channels (as to give faster recovery) would benefit.  I am only speculating about possible things until Mihai shows up.  Are you planning on doing some 459 Tests?  Also did you have you header set as DoMo or had you changed it?

[ghost2212]

Thats interesting to hear, strange how you werent getting as many problems as southpawpaul.  I wonder if there could be setup related issues creeping in.  I have found this FW to be pretty good for locking back on after losing sync, but flying the skywalker is different to a fast aircraft or a multicopter where a solid link all the time is needed.  I havent lost a link but if I did for a second or two it wouldnt matter.  Perhaps for those using multicopters a no hop or limit to 3 channels (as to give faster recovery) would benefit.  I am only speculating about possible things until Mihai shows up.  Are you planning on doing some 459 Tests?  Also did you have you header set as DoMo or had you changed it?

Yep we changed the header, Hopefully we will test the 459mhz but not with the current weather. We were flying a Twinstar but I don't think I had any lockouts all day. I know that some of the other UHF users did I think as one guy crashed a nice composite glider due to what they think was a control lockout.

[papa_lazerous]

That is the thing with all of the UHF systems out there, I dont think there is the capacity for allot of users to run side by side like you can with 2.4 To be fair thats a new thing really but something we have all grown to expect now.  And all of the UHF systems seem to work differently so who is to know how well they play together as the manufacturers most likely dont check.  It's good you got some decent range with others around as that proves things are working as they should.  I know with the hopping that it should get a sync pretty fast, if it was taking a long time it may be that there where contsantly bad channels perhaps due to the amount of UHF traffic in the area.

[Coyote]

Looking at the Bounce meet posts on RCG it seems that this was not an isolated incident with Open LRS. There are several people all saying the same "glitches" happened on TLRS, Dragon Link etc. It would seem to me that there was just too many people on the same bands at the same time