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

[jiberjaber]

Hmmm I am pretty tempted by this system now! :)

[Coyote]

Nice antennae too, its an impressive range test for sure. How was the new firmware ? Did you have RSSI displayed ?

[thundead]

v3.3 - RSSI moved to pin 7
                 - CH7 moved to pin 9
                 - SERIAL PPM fixed and on pin 8
                 - 459Mhz band fixed.

http://code.google.com/p/openlrs/downloads/list

Cheers,
Mihai.

[Coyote]

Excellent work bud :)

[Coyote]

Turned out to be a bad connection on soldering so i tidied up the thread.

All 3 rx`s working great, no binding like othe LRS which i really do like :)

So far all tests have been flawless with 5 channel hopping, custom headers.

Only range checks to do now, then game on !

[Devonian]

Seen this ground test?

http://forum.flytron.com/viewtopic.php?f=7&t=54&p=2346#p2346

It gets better by the day.

Nigel.

[Coyote]

Cool, 2km on the ground with diamond and dipole on 6 channels :)

Im on a diamond and ive made some 459mhz rx antennas straight off the board, but ive factored in 0.9 as a velocity factor so ended up with 147mm elements

[Devonian]

Hmm, I calculate the elements need to be 163mm @ 459MHz for each 1/4 wave part.

300 / 459 / 4  = 0.163 metres (163mm).

Velocity factor only applies to coax and were not overly concerned about that in this scenario.

Nigel.

[Coyote]

Its not so much the co-ax but ive got my elements inside piping, only active element too ( on the quad )

[g.collins]

Hay guys, this all looks and sounds great, the thing that puts me of, is every time I look at these posts, my mined is switched of with all the scents.
your tests and antennas are great Splashy, are you going to put up a post on how to make them, if I thought that I could get a safe 2 to 3km out of this system, I would jump on board, but electrics puzzles me and I think I would end up, not being able to get it working properly and wast yet more money.
:) G

[Coyote]

The antennas are as easy as it gets G, two wires, one going up 163mm from center pin of rx, the other ging down 163mm from outer pin. Make sure the one going up is as straight as possible and you have a dipole ;)

[g.collins]

thanks Coyote, is that the same as the Dragon link antenna then, not specifically the length, but one up and one down configuration, if so. can I use the DL TX transmitter antenna on the TX model.
:) G

[Coyote]

Yeah same as Dragon, Chainling, Rangelink etc etc ............

But they are tuned to 433 mhz not 459

You can use a dragonlink tx antenna on a OpenLRS tx if thats what you meant

[g.collins]

cool, thanks its a little bit clearer now.
;) G

[Splashy]

Hay guys, this all looks and sounds great, the thing that puts me of, is every time I look at these posts, my mined is switched of with all the scents.
your tests and antennas are great Splashy, are you going to put up a post on how to make them, if I thought that I could get a safe 2 to 3km out of this system, I would jump on board, but electrics puzzles me and I think I would end up, not being able to get it working properly and wast yet more money.
:) G

I can make you a couple of antenna if you like.

I got some 0.8mm MIG welding wire, RG58 SMA connectors and a snake set for a Easy Star.
I solder a length of the wire onto the SMA then very carefully measure 163mm from the edge of the SMA connector and cut the wire. I then put on the inner snake so it goes right up to the soldered bit and cut to length. Then the outer snake and cut. Finally I put some heat shrink on the top and where the snake joins the SMA connector.

It is not a difficult job if you have the right components and the right soldering iron with a fine tip.