Hitec Aurora 9 Transmitter - Page 1554 - RC Groups
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Jan 15, 2013, 10:36 AM
Registered Crasher
Quote:
Originally Posted by shadow102
it was simply due to them not having to pay for spektrum royalties anymore by going with their own protocol
Huh? Are they not the same company??
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Jan 15, 2013, 10:37 AM
t = Col Frank Fitts
tdab's Avatar
Quote:
Originally Posted by VideoKing
Go to the dual rates / expo page, under the "model" tab, change the switch to switch "E" and then move the switch to each of the positions and programme as much movement as you want.

It's exactly the same as a usual dual rate setting, except you change the switch allocation to "E"
VK, You are the man. Much appreciated. Tom
Jan 15, 2013, 10:40 AM
Registered User
shadow102's Avatar
Quote:
Originally Posted by jtaylor996
Huh? Are they not the same company??
Nope, Spektrum is owned by Horizon Hobby...they do not own JR, JR is its own company
Jan 15, 2013, 11:27 AM
I can crash anything
Quote:
Originally Posted by shadow102
Nope, Spektrum is owned by Horizon Hobby...they do not own JR, JR is its own company
JR is a susdiary of Horizon Hobby, Spectrum is a wholly owned name brand for HH radio equipment.
Jan 15, 2013, 12:01 PM
Radio? Screwdriver!
Quote:
Originally Posted by Rescuejim
JR is a susdiary of Horizon Hobby, Spectrum is a wholly owned name brand for HH radio equipment.
No, JR Propo is a separate company to Horizon. Horizon own the rights to use the name in the US and is a distributor.

In the UK we have MacGregor as the JR distributor and still have Horizon as a separate distributor entity.

See Andy Kunz post on this (a Spektrum developer).

Si.
Jan 15, 2013, 02:44 PM
Registered User
shadow102's Avatar
its like Futaba and Hobbico. Hobbico is the US distributor but futaba is its own company. Hence the reason hobbico came up with anylink for their BNF models
Jan 15, 2013, 03:33 PM
Radio? Screwdriver!
Quote:
Originally Posted by VideoKing
Sorry I did not mean to imply that an inbuilt module would be needed for improved latency, only that that would be the outcome of the transmitter design changes.
I think the old modules will NOT be up datable to the new protocols, because that would sabotage their new product. Why upgrade to a new TX if the old one could be updated. Does not make commercial sense, anyway the old hardware may not be compatible with the protocol changes. For faster data they will need wider bandwidth, similar to DSMX.

Personally I don't think Latency is a problem, its only the "must have's" who want it, so I think this new Tx will be at least 50% higher in price, as will be the matching receivers.

I just hope the old A9 does not get let to wither and die, as its still far from a finished project.
I would be very surprised if the old hardware didn't work, after all if they keep with the CC2500 RF chipset, its just down to code. Hitec actually use one of the fastest data rates of a RC protocol I've seen - around ~250kbaud. Which is a lot higher than frsky and futaba s-fhss.

The easiest way to reduce the latency is speed up the rate at which the packets are sent. At the moment it sends 4 identical packets in a ~20ms frame. Where as Futaba send 2 packets in a 6ms frame. Thus they do have much lower latency.

But yes, I feel Latency is a issue made bigger than it really needs to be. However it makes a could selling point!

Also it wouldn't make sense to have the older models support the lower latency, as after all, Hitec make a lot of money (maybe more?) from the receivers. So they would be more interested in selling more of them. Anyway there are plenty of people who want to buy the latest transmitters when they are released!

However we're getting beyond ourselves. It's only a rumour still (albeit strong one) and we all know that even after Hitec announce it, it usually takes at least year (or two) before it's actually in the shops... !

Si.
Jan 15, 2013, 05:49 PM
most exalted one
micro usb port and sd card!! Backward compatibility and forward compatibility update or Hitec begins to lose.
Jan 15, 2013, 07:08 PM
as much as I can
beenflying's Avatar
Quote:
Originally Posted by SimonChambers
I would be very surprised if the old hardware didn't work, after all if they keep with the CC2500 RF chipset, its just down to code. Hitec actually use one of the fastest data rates of a RC protocol I've seen - around ~250kbaud. Which is a lot higher than frsky and futaba s-fhss.

The easiest way to reduce the latency is speed up the rate at which the packets are sent. At the moment it sends 4 identical packets in a ~20ms frame. Where as Futaba send 2 packets in a 6ms frame. Thus they do have much lower latency.

But yes, I feel Latency is a issue made bigger than it really needs to be. However it makes a could selling point!

Also it wouldn't make sense to have the older models support the lower latency, as after all, Hitec make a lot of money (maybe more?) from the receivers. So they would be more interested in selling more of them. Anyway there are plenty of people who want to buy the latest transmitters when they are released!

However we're getting beyond ourselves. It's only a rumour still (albeit strong one) and we all know that even after Hitec announce it, it usually takes at least year (or two) before it's actually in the shops... !

Si.
I'm pretty sure Jim Drew said that a major component of the latency in the A9 was due to the how long it took the module to send the data, after it was sent from the Tx to the module (which I believe is I2C between the two). So eliminating the module would improve the latency, in this case.
Jan 15, 2013, 07:32 PM
Addicted to 3DHS and EF
3Daddict's Avatar
I fly high energy 3D flying inches off the ground, and I can say that I do not notice any Latency issues with this radio. The only reason i think people say things about hitec having some sort of latency problem is because they are futaba fans.
Jan 15, 2013, 07:57 PM
bryansifsof44's Avatar
Quote:
Originally Posted by 3Daddict
I fly high energy 3D flying inches off the ground, and I can say that I do not notice any Latency issues with this radio. The only reason i think people say things about hitec having some sort of latency problem is because they are futaba fans.
Agreed... i fly 3D planes and starting to get aggressive on helis too. No issues with latency and I have flown both futaba and Spektrum to boot. I used to fly strictly futaba until they fell behind on telemetry.
Jan 15, 2013, 08:56 PM
Registered User
prefabu's Avatar
Quote:
Originally Posted by prefabu
I left the battery out for a couple of hours, then I recharged overnight. I just tried to perform the 1.09 update once again. This time I watched closely. The transfer progress bar reached 44% and then went back to 0%. The transfer status line flashes every couple of seconds. It might be displaying another status for just the briefest instant, but I'm not sure. It's nothing I can read.

Once the transfer status goes back to 0%, nothing else happens. I'll try again one more time this evening. Clearly it's working to some extent. All the lights are flashing rapidly as data is transferred, but then it stops before completion.
I took my A9 over to my father's house to try updating the firmware on his computer using his HPP 22 device. Everything worked as it should. Does anyone have any idea about what would cause an update to abort part way through? Does the HPP 22 device use a fair amount of power during the update? I know the USB ports on my computer are pretty weak since they had trouble powering an external drive whereas my Linux box had no issue at all.
Jan 15, 2013, 09:53 PM
Addicted to 3DHS and EF
3Daddict's Avatar
you know another thing I notice about people who say they can tel a 20 ms difference. They have there sticks tight, and are using analog servos. Also the only people who ever seem to mention it are Team Futaba pilots who make a big deal out of it as a selling point. I believe people are experiencing a placebo effect: they expect to notice a difference between the two radios so they do.
Jan 15, 2013, 10:08 PM
bryansifsof44's Avatar
Quote:
Originally Posted by 3Daddict
you know another thing I notice about people who say they can tel a 20 ms difference. They have there sticks tight, and are using analog servos. Also the only people who ever seem to mention it are Team Futaba pilots who make a big deal out of it as a selling point. I believe people are experiencing a placebo effect: they expect to notice a difference between the two radios so they do.
LOL... they get the more locked in feel, right.
Jan 16, 2013, 05:09 AM
Sailplane Mafia
gquiring's Avatar
Quote:
Originally Posted by VideoKing
SD cards are so last decade. ....

Seriously, how are you going to reprogram the receivers, telemetry station, as well as possible new mA sensors with an SD card. The USB box is the only sensible system.

You cant put a card reader in every module and receiver.......
Why don't you try thinking for a moment, I am referring to the TX.


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