Weird lag on controls with 7e and NRF24L01+

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16 Jun 2015 19:08 - 16 Jun 2015 19:24 #34180 by rilot
Hi guys
First, thanks for the awesome Deviation software. Absolutely loving it.

I'm having an issue with the NRF24L01 module in my 7e. I've installed it as per the connections listed here: bitbucket.org/PhracturedBlue/deviation/wiki/ModuleList It's in the TCK position as I have an A7105 in the TMS position. I've wired the A7105 the new way and it works just fine with all my Hubsan models. The NRF24L01 does not however.
I can bind it to a Syma X4 using the SymaX4 version of the YD717 setting and everything works, except that the control have about 1 second of lag. Every control responds as it should apart from the lag. It's really odd. I've checked my wiring and it all seems OK. I've tried it with and without the PA setting although I think my module does in fact have the PA. It's this one: www.ebay.co.uk/itm/351026325001?_trksid=...e=STRK%3AMEBIDX%3AIT

Using the latest nightly

Any ideas?
Last edit: 16 Jun 2015 19:24 by rilot.

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17 Jun 2015 04:26 #34203 by hexfet
Replied by hexfet on topic Weird lag on controls with 7e and NRF24L01+
That module does not have a PA.

Can't think of anything that would explain a one second lag. Maybe interference - have you flown in more than one location?

This protocol does require receiving from the quad - binding is evidence that is working. Once bound any reception issues would only cause a max 5ms delay before sending the next packet.

Does the X4 fly fine with the stock tx?

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17 Jun 2015 07:05 #34209 by rilot
Yes, the X4 flies fine with it's stock TX. It's really odd. I've tried it in a number of locations and always get the same result. The lag does vary though from around 1 second to sometimes 2 seconds.
All other models that I have that use different protocols work fine but I don't have another model that uses that module though.
Could I have damaged the module if it doesn't have the PA but have selected the PA option in hardware.ini?

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17 Jun 2015 12:15 #34216 by hexfet
Replied by hexfet on topic Weird lag on controls with 7e and NRF24L01+
No it would not damage the module. Your module might be faulty, though I can't think how that would explain binding fine but lag when flying. Best would be to try with another aircraft.

Is it a new X4? Maybe Syma's tweaked the protocol.

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17 Jun 2015 12:50 - 17 Jun 2015 12:57 #34220 by Durete
Replied by Durete on topic Weird lag on controls with 7e and NRF24L01+
@Hexfet, I know syma released a new X12S nano quadcopter, with some differences at the protocol. In fact Syma X11, X12, X13, etc... X12S stock TX's binds fine with the X12S old Syma staff but no our SymaX protocol doesn't bind with the new X12S. I don't think this could be related, but who knows...

Edit with correct information
Last edit: 17 Jun 2015 12:57 by Durete. Reason: Edit with correct information

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17 Jun 2015 12:55 #34222 by rilot
The X4 is about 6 months old. It has the white xbox tx. I've got a brand new X3 that appears to have a different protocol. It for sure doesn't work at all with either the X1 settings or the new X3 settings. Syma may have done something. Doesn't explain my X4 issue though.
I'll pull the A7105 module tonight and move the NRF24L01 to the TMS position and see if that changes anything. At the very least it will rule out interference between the modules.
Just to check though, I've not taken one apart but does the Syma stock xbox tx have a module I could pull? If so, I can add that instead to see if it's my module that's faulty.

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18 Jun 2015 11:37 #34278 by rilot
Swapped them between A13 and A14, no difference. Still loads of lag.
Removed the hubsan module, same deal.

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18 Jun 2015 11:56 #34281 by hexfet
Replied by hexfet on topic Weird lag on controls with 7e and NRF24L01+
I don't know about that controller. Trying a different module would be a good next step if there's no other aircraft to test with.

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18 Jun 2015 11:57 - 18 Jun 2015 18:16 #34282 by racemaniac
Replied by racemaniac on topic Weird lag on controls with 7e and NRF24L01+
Not sure if it's related or not, but i'm experiencing the same issue with my devo 7e, and a bnf JXD 385 that just arrived.
I already use my modded 7e on JJ1000 and CX-10(a) quads, and it works perfectly, but with the JXD 385 i've got a very unpredictable connection. Sometimes it reacts more or less normal (for a few seconds), and then it just doesn't listen for a second >_< (and thus usually crashes into a wall or so).

*edit*
I assume it's an issue with the quad. Holding the 7e really close to it fixes the issue, so it seems to have VERY bad reception >_<
Last edit: 18 Jun 2015 18:16 by racemaniac.

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18 Jun 2015 20:16 #34320 by rilot
I've ordered another module. One with a PA this time. Will try it and report back what the results are if anyone is interested.

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22 Jun 2015 13:32 #34521 by rilot
New module sorted it. I got one with the PA and it now works perfectly.

On another note, the X3 I have won't bind. It appears to have a newer version of the Syma board than Deviation supports. It's marked SM X5-R V5. The SymaX protocol doesn't seem to work with it either with the X5C option on or off.

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22 Jun 2015 14:38 #34526 by Durete
Replied by Durete on topic Weird lag on controls with 7e and NRF24L01+
Did you try to bind using the SymaX4 protocol option under YD717 protocol?

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22 Jun 2015 14:39 #34527 by hexfet
Replied by hexfet on topic Weird lag on controls with 7e and NRF24L01+
Good news on the module.

The Supported Models spreadsheet says the X3 uses the YD717 protocol with the Syma X4 option. Does that work?

.

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22 Jun 2015 14:45 #34529 by rilot
Doesn't work. The X4 works fine with the SymaX4 option but the X3 doesn't bind. It appears to be a newer version of the X3 I have with the X5 flight board.

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22 Jun 2015 14:53 #34530 by rilot
Edit, sorted it. I works with the SymaX protocol, with the X5 option off. Not the YD717

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22 Jun 2015 15:43 #34534 by rilot
OK, now this is strange. The craft just wouldn't fly. It was almost as if it was in rate mode. The controls seem to stick. Very strange.

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