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

[SouthPawPaul]

I am flying my Tricopter with this firmware, but only out to about 300m as I don't have a way to monitor RSSI whilst under goggles. THis is why I was asking about some sort of audible notification that my signal was degrading.

[thundead]

I might implement something like primitive telemetry but can't find the time atm. plus not seeing a big interest in the olrs lately except a couple of you guys. Next thing in the works is RSSI based on packet lost rather than on raw rssi data from the rf module.

I am flying my Tricopter with this firmware, but only out to about 300m as I don't have a way to monitor RSSI whilst under goggles. THis is why I was asking about some sort of audible notification that my signal was degrading.

[phibin]

I might implement something like primitive telemetry but can't find the time atm. plus not seeing a big interest in the olrs lately except a couple of you guys. Next thing in the works is RSSI based on packet lost rather than on raw rssi data from the rf module.

im still very interested....

unfortunately i ran into a problem with antenna connection i haven't resolved yet,
but im hoping for some good testing soon.

the rssi idea sounds like a good one :)

im thinking im going to have to buy like 10 pairs of ends to make a new tx pigtail... :/
dont think my soldering or my soldering iron are really up to the job..

any one fancie selling me a couple 'ready done' ?


simon.

[thundead]

lol simon ask and u shall receive lol. ive got some sma- sma pigtails uf u need. drop me a pm lol.

I might implement something like primitive telemetry but can't find the time atm. plus not seeing a big interest in the olrs lately except a couple of you guys. Next thing in the works is RSSI based on packet lost rather than on raw rssi data from the rf module.

im still very interested....

unfortunately i ran into a problem with antenna connection i haven't resolved yet,
but im hoping for some good testing soon.

the rssi idea sounds like a good one :)

im thinking im going to have to buy like 10 pairs of ends to make a new tx pigtail... :/
dont think my soldering or my soldering iron are really up to the job..

any one fancie selling me a couple 'ready done' ?


simon.

[phibin]

PM sent :)

lol simon ask and u shall receive lol. ive got some sma- sma pigtails uf u need. drop me a pm lol.

I might implement something like primitive telemetry but can't find the time atm. plus not seeing a big interest in the olrs lately except a couple of you guys. Next thing in the works is RSSI based on packet lost rather than on raw rssi data from the rf module.

im still very interested....

unfortunately i ran into a problem with antenna connection i haven't resolved yet,
but im hoping for some good testing soon.

the rssi idea sounds like a good one :)

im thinking im going to have to buy like 10 pairs of ends to make a new tx pigtail... :/
dont think my soldering or my soldering iron are really up to the job..

any one fancie selling me a couple 'ready done' ?


simon.

got some ordered ;D

[SouthPawPaul]

I got the opportunity today to show all the EZUHF, ThomasLRS and DragonLink boys that OpenLRS with thundead's custom firmware was just as stable and as capable (up to 3km ;)) as theirs is.

I turn on my Tx. Things are looking good, I've not shot down any of the other LRS aerial vehicles.
I plug in my Tricopter and as usual, wait for the blinking lights on the MultiWii baord to tell me all is initialised.

At this point I realise something isn't quite right. The red light is flashing frequently on my Rx. It's never done that before. My Tx is about 2 metres away.
I think that I'll just bring the Tricopter up into a hover to see of it's twitchy. On my short walk back to my Tx I hear the tail servo moving on my copter and I turn around to see it go full right. The Wii board when seeing this input, arms the copter and the props start spinning. Just as I near the copter and bend down to unplug it the motors start blipping.  I quickly yank the power and set about diagnosing the problem.

It turns out there was another chap using ThomasLRS and right next to him was a chap using Dragon link. Both these guys were about 5 metres away from my copter. It seems that random control data from their systems were being fed and used my my OpenLRS Rx.

I packed away at that point due to the fact that 90% of the people there were using the other LRS systems and I didn't want to get shot down.

My confidence in the RC link has been knocked.

I have attached my config.h Tx file in case anyone wants to see what I have set.

[papa_lazerous]

a RED light means you are losing packets of data, this may be caused by lots of other people in the close proximity uing high powered UHF settings. Did you have failsafes set correctly?  Also another LRS cant control your Tricopter that 100% cant happen!

[SouthPawPaul]

I'm sorry to say that it 100% definitely did happen.

I got the guy running ThomasLRS to stop moving his Tx controls and all my twitching stopped. When he started moving his  Tx controls it start twitching and acting up again.

My failsafes are set to everything neutral.

[papa_lazerous]

I'm sorry to say that it 100% definitely did happen.

I got the guy running ThomasLRS to stop moving his Tx controls and all my twitching stopped. When he started moving his  Tx controls it start twitching and acting up again.

My failsafes are set to everything neutral.

That doesnt mean he was controlling your tricopter, it means the guy beside you was broadcasting on an Illegal frequency at an illegal power and it was causing interference with your setup!  Why not go out without others using high powered UHF on non UK legal powers and frequencys and then do a test.  In the situation you where in today only the most powerful system will be ok!  Thats not the fault of your system its just how it is, in a room full of people talking you only hear the loudest person shouting...

[thundead]

hey mate,

just had a look at your config.h and in theory its absolutely impossible to receive packets from another system because tlrs dlink are hopping between 430-447 while you are on 459.  Furthermore, the olrs uses a 4 byte header to make sure only valid packets are used. Invalid pckets are dumped. so very weird indeed. Only explanation, someone else was using the Olrs on 459 on stock settings (header DoMo which needs changing in order to have an unique packet like binding more or less)

Sorry to hear that anyway :(

[SouthPawPaul]

I want to make clear here that I am in no way trying to lay blame at anyone's feet. I'm just reporting my findings so that others may learn from my experience.

It is indeed weird. There was only one other person there using openLRS and he was using 433Mhz.

I expected it to be ok because I'd seen the packet headers and was well aware of the theory behind them.

I guess I literally got shouted out. Which I guess is to be expected. Had I been using one of the other high power UHF links I could've been stood right next to the other two who were quite happily co-existing.

[papa_lazerous]

I want to make clear here that I am in no way trying to lay blame at anyone's feet. I'm just reporting my findings so that others may learn from my experience.

It is indeed weird. There was only one other person there using openLRS and he was using 433Mhz.

I expected it to be ok because I'd seen the packet headers and was well aware of the theory behind them.

I guess I literally got shouted out. Which I guess is to be expected. Had I been using one of the other high power UHF links I could've been stood right next to the other two who were quite happily co-existing.

2 Olrs users in one place, wow! although it sounds like allot of UHF in one place, where you at a FPV meetup lol So how did the other olrs user get on? if he was ok then it points towards a setup issue.  I hope you can get setup and working as it really does work!! I will send you a PM in a moment

[SouthPawPaul]

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.

[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

[Coyote]

Dragonlink was the same, fly with other Chainlink users ( like we did at a meet ) and all the chainlink users were fine, the DL user ( Marcin ) was failsafing next to tx. Dragonlink has since fixed this problem.