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

[thundead]

getto enough ? :D




This is called the poor student's rig where the cable tie is king :D

Year ER-9X, cool, having a look right now :)

Its just a ply board and velcro, as getto as I can get :)

[papa_lazerous]

Your attachment sucks.  Can't view on tapatalk as its a clickable thumbnail, instead of the image direct on the page. So you get points or ghetto posting

[Coyote]

Lol, its got the servo test function, but I have no idea what im doing with the mixes * runs to find video *

[Coyote]

Easy enough

Template Servo Test (Servo Teste)- ER9X

[papa_lazerous]

Mixes are something you should know about in detail.  Some very clever stuff possible

[Coyote]

All sorted working fine, ground tests here we come

[papa_lazerous]

All sorted working fine, ground tests here we come

Cool :) I'd expect you get more rage than me, as I must have been getting a loss due to the sea.  Can you test on 459 and 6ch hopping so you mirror my test.  That way our data can be compared, ofcourse antennas will be different though

[Coyote]

Ok I`ll do that, using a Diamond on tx and Splashy 459 Sander style

[papa_lazerous]

Same Tx antenna :) the Rx antenna is down to how good splashy is ;)

[phibin]

hello all...

i have had olrs v2 hardware for a while now and have been testing some of the earlyer fw...

after not very good range at all and crashing my quad i waited for an update,
tried that and got 20ft maybe before really bad glitching etc..

so i have been waiting for some new fw to be written.
unfortunately im no programmer,
and i admire those who understand even a bit of it! lol

if we now think this 3.6 fw will work on 459mhz i will reflash it this week end and have a go :)
i will have to go get a new multi meter from b&q or something to test the rssi and i will report back.

originally i tried making some antennas but purchased some from badland.co.uk in the end
they made some especially for me, 2x lightened 1/4's for airframes and a 1/2 wave for tx,
all for £30  ;)

so 459 hopping 6 channels?

simon.

[papa_lazerous]

Hey Simon good to see you are up for some testing, maplin might be a good bet for a meter it would be a £15 investment but well worth it,  once you have a meter you wont know how you managed without it.  When you want to measure the RSSI take an old servo that's broken and cut the cable off, or cut one end off an extension,  you need to connect the meter to the outer 2 wires.  That's ground and signal,  do not use the centre wire as that's 5v! Best keep that wire out the way!! You will need the Tx upright and the Rx upright so both antennas are orientated the same.  It's best to have a helper with the Tx so it's off the ground at normal height too.  I guarantee you will have better results with 3.6. I've got complete confidence in it,  and I can honestly say its the first time I've had this much confidence in it lol. Make sure your Rx isn't naked, as that will affect performance!  I use heatshrink to protect mine.  Really looking forward to seeing someone else's data :)

[phibin]

ok i got a bit exited last night at the prospect of olrs working well enough to use now

so i flashed 3.6 359 6ch last night and went for a quick test around the house
i got 250m up the road!!! :)
this is through old 2ft stone walls of my house and in a dense urban area! and in the car!!!

very pleased so far!!! any other fw was glitching at the door step!!!

going to get multimeter now... will report back when 'propper' test done...

simon.

[papa_lazerous]

That sounds promising! I didnt get very far in my car either, add stone walls and 250m is actually very good :)

[phibin]

well...

i managed to do a bit of a test in the end (busy weekend)

i roped a friend into holding the tx and we went to the biggest open area close to here.

got the v2 rx hooked up to the meter and it read 2.9v or there abouts...

i drove to the other end about 450-500m away and got out the car.
i was getting nothing behind trees and under 1v at 450m away :(

it only became a 'usable link' at around 250m in open space.
any greater distance and i was loosing lots of packets....
and the voltage on rssi seemed to have to be around 1.5-2v to get a good link..?

i didnt have it all mounted to anything though...
would this affect  it?
the rx is covered in battery pack heat shrink so its ok,
but would holding it affect the range?

i was quite exited at the prospect of being able to use olrs in the air after all this time
and 3.6 does seem to be the best fw yet! thanks every one for all the dev. so far.

but if im honest i was expecting more :/

maybe its my antennas?

might try post a pic of it all tomorrow if anyones interested?

simon.

[papa_lazerous]

Antennas will play the biggest role in the quality of your link!  You say you got your antennas from badland.co.uk all for £30.  I paid that much just for my Tx antenna lol  I have absolutely no way of knowing if your antennas are good or bad but I would be swayed into suspecting that something is not correct there.

You should absolutelty be getting more signal than you are getting right now, without a doubt 100% sure about this, the only possibilites are a) you are doing something wrong b) your antenna is wrong c) you have a hardware issue.

Firstly you say you have heatshrink on the Rx this is good, and holding it shouldnt cause a problem, I put everything in a box so it wouldnt be an issue though

Whats your Tx setup like?  specify what type of module and radio you have and how its hooked up

Next is one of the most overlooked and kinda obvious things,  When you flashed your Tx & Rx in Arduino what board did you select? it should have been the Arduino pro or pro mini (5V,16MHz w/ATmega 328)

If you selected ANYTHING else its wrong and will kill any range, I have posted a picture below of the correct option to select, sorry if this is obvious but its also a good reason why your range would be bad



If you flashed using the correct option can you try a range test using the standard antennas?

Also I found I could get much lower than 1.0-1.5v for a useable RSSI, I will say that I had a good direct line of sight with no obstructions betweenthe Tx and Rx.  Trees are an absolute no no for range tests when they are in close proximity especially now they have leaves!  They absord radio waves on the UHF very easily, so if you have trees between the Tx and Rx you will get poor results.  There must be a clear place near you that you can get say even at least 500m of clear ground just to overcome the issue you have now with trees like a school plaing field or something.

Also I didnt get to fly and do an in the air range check this weekend as it blew and blew all day sunday, and its half 6 Monday and still blowing :(