You know, I think that I am glad that I have waited to jump on the ELRS bandwagon.
By the time I get ready for my new transmitter, RadioMaster TX16S II (or what
ever is new), this ELRS might be a bit more stabilized.

(05-Jul-2022, 07:29 PM)Lemonyleprosy Wrote: In the meantime I don’t think you’d need to buy another whole transmitter to run both v2 and v3. Pretty sure you could just buy an external nano ELRS tx module, run v2 on your internal and v3 on your external or vice versa, and just switch between internal or external module depending on the quad you wanted to fly.

You know that would be an interesting experiment.  The Jumper T-Pro allows a nano module, so I could maybe use that.  But I find those external modules to be aesthetically displeasing.  Like strapping a house brick to the underside of a controller.  Would rather have another controller.  I have nothing but good things to say about the T-Pro, as much as people slag it off, it wasn't as bad to flash people made out and it's smooth as silk when you are flying, plus the ELRS LQ is pretty excellent.

TBH though my plan was to probably buy one of the new Jumper T-Lite ELRS with the four, 3-way switches on it.  My T-Pro lacks proper multi-position switches.  It has two plastic 3 way switches.  I use one for modes and one for arm.  It also has loads of other switches, but I haven't worked out how to set them up yet.  Thankfully this drone doesn't appear to have turtle mode, so I only need to add the buzzer in at some point when I work out how to.  But on a more advanced drone that supports lots more things and might need more switches, then it would be nice to have more, not to mention if I ever get a wing (and I almost bought a partially built Caipirinha last month), then more switches would be useful.

iFly4rotors Wrote:You know, I think that I am glad that I have waited to jump on the ELRS bandwagon.
By the time I get ready for my new transmitter, RadioMaster TX16S II (or what
ever is new), this ELRS might be a bit more stabilized.

It's as bleeding edge or as stable as you want it to be.  Sure the hardware part keeps changing, but that's software/hardware development for you.  I went down this path because it was open source, being actively developed and because I see it as the future.  Also many of the review videos I watched achieved great things with ELRS.  I was originally interested in Crossfire or Tracer, but all the reviews I watched, the ELRS TX/RX blew them away.  it was also cheaper than either of them.  OpenVTX and HDZero will probably be the other future tech that becomes the standard, down the line.

Yes, I do believe it will be the major protocol moving forward...and
someday I will likely move towards it myself. Since I have no place to
fly long range and even limited short range fly locations, the XM+ is
holding up well for me. Plus, I must have a dozen of them. As a side
note, the ViFly cam switcher works quite well with the SBUS protocol.

Im still on like 2.3 something with 915ELRS
I thought binding phrase and VTX Administrator were HUGE.
This update feels even bigger.


But Im bit confused by some changes.
All this time it was sending 1.2us.. why?

Where is all this bandwidth for faster telemetry magically appearing from?

Why modes to resend packet 4x - I thought there is FEC and CRC to fix small errors.

(12-Jul-2022, 03:31 PM)romangpro Wrote: But Im bit confused by some changes.
All this time it was sending 1.2us.. why?

Where is all this bandwidth for faster telemetry magically appearing from?

Why modes to resend packet 4x - I thought there is FEC and CRC to fix small errors.

The change from 1.2us to 1us was due to the range over which they were compressing the 10-bit Crossfire channel values. One of the ELRS Devs, CapnBry, has a new video that answers most of your questions.

The additional bandwidth is coming from 1) larger packets in some modes to support full res channels for PWM use, and 2) the addition of FLRC modes which have a much higher bandwidth and reduced time on air at the expense of sensitivity.

The DVDA modes all run at 1000Hz, but send the same packet twice (D500) or four times (D250) at different frequency hops to increase the likelihood that a packet gets through. This has the effect of greatly reducing jitter, as packet timings at the receiver are much more consistent and higher feedforward rates can be used.

I read and re-read the dev notes from github.
I was super excited by ELRS 3.0 - especially DVDA.

But, it turns out little if anything applies to us 915Mhz users.
I'm still waiting for some nano diversity receiver goodness to rain down from the heavens.
I dont want to have to buy more old FrSky R9 Slim+ and flash over - they are pretty bulky.