Flysky AFHDS 2A, protocol as used i10, i6, iT4,

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05 Jun 2016 14:46 - 05 Jun 2016 14:57 #49955 by goebish

HappyHarry wrote: nice purchases, though the inductrix is a little tame if you already know how to fly, they should have included an agility mode


I know it's tame, especially with stock motors & batteries + the extra weight of the micro fpv pod, but I'm waiting for beefier motors and batteries, should be fine for my small apartment ;)
Also, it has an agility (rate) mode, though it's not stated in the manual (probably because it can't be done with the RTF transmitter) , just toggle channel 6 high / low to switch between "safe" and agility modes :)
Last edit: 05 Jun 2016 14:57 by goebish.

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05 Jun 2016 14:59 #49956 by stinkydiver73
Replied by stinkydiver73 on topic Flysky AFHDS 2A, protocol as used i10, i6, iT4,
thx, i already have backup :)

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05 Jun 2016 17:49 #49964 by stinkydiver73
Replied by stinkydiver73 on topic Flysky AFHDS 2A, protocol as used i10, i6, iT4,
Nothing new found after updating the rx. I have TGY-i6 tx with FS-i6 firmware, only the same 3 sensors found in the sensor list: IntV 1, Tx.V 1, Err 1 (%).

(Bricked in linux/openocd, backup, erase worked, write_image no, not interesting, windows st-link utility worked)

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05 Jun 2016 17:51 #49965 by stinkydiver73
Replied by stinkydiver73 on topic Flysky AFHDS 2A, protocol as used i10, i6, iT4,
Not a big surprise if the old fw don't handle the new funcionality :(

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05 Jun 2016 17:51 - 05 Jun 2016 17:51 #49966 by goebish
The TGY i6 won't display sensors it's not aware of, obviously ;)
At least this has not bricked the RX, so that should be fine to upgrade them for usage with Deviation :)
Last edit: 05 Jun 2016 17:51 by goebish.

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05 Jun 2016 20:03 #49984 by Fernandez
Replied by Fernandez on topic Flysky AFHDS 2A, protocol as used i10, i6, iT4,

goebish wrote: Can someone take close pictures of the Flysky iA6 and iA10 RX, I want to make sure that's the same hardware than the Turnigy's before we try to flash them.


Attached image from the Flysky IA6B, bought at Banggood few weeks ago.
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05 Jun 2016 20:09 #49987 by goebish
Seems similar, I'll write a small tutorial to update it to TGY fw 1.6 with the ST-Link.

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05 Jun 2016 20:16 #49990 by HappyHarry
Replied by HappyHarry on topic Flysky AFHDS 2A, protocol as used i10, i6, iT4,

goebish wrote: I know it's tame, especially with stock motors & batteries + the extra weight of the micro fpv pod, but I'm waiting for beefier motors and batteries, should be fine for my small apartment ;)
Also, it has an agility (rate) mode, though it's not stated in the manual (probably because it can't be done with the RTF transmitter) , just toggle channel 6 high / low to switch between "safe" and agility modes :)


should be a great fpv platform once modded! I never knew about the rate mode, I followed the threads when it was first released as i liked the idea of no exposed props for indoor obstacle avoiding fpv, but as the early adopters reported it's docile nature and no rate mode I quickly lost interest, seems like I should have stuck around lol. I'll keep an eye for your findings once modded and it may move back onto my want to own list :)

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05 Jun 2016 21:07 #49996 by goebish
Google "tiny whoop", lot of resources :)

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05 Jun 2016 21:26 #50002 by HappyHarry
Replied by HappyHarry on topic Flysky AFHDS 2A, protocol as used i10, i6, iT4,
sweet! thanks for the heads up, just watched some of their youtube vids, now i'm off to order myself an inductrix :D

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05 Jun 2016 21:34 #50004 by goebish
I posted a tutorial to update iA6B firmware via ST-Link on rcgroups, I couldn't post it here because number of links per post are limited on this forum:
www.rcgroups.com/forums/showthread.php?t=2677694

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06 Jun 2016 00:18 #50011 by dc59

goebish wrote: I posted a tutorial to update iA6B firmware via ST-Link on rcgroups, I couldn't post it here because number of links per post are limited on this forum:
www.rcgroups.com/forums/showthread.php?t=2677694


Thanks Goebish for your great tutorial, I have finished my iA6B FW update, there is nothing has been changed on stock TX,



but now I can get RSSI on my U7E telemetry page.



Is -60db correct ?? I put RX next to U7E.

BTW, I didn't do this step "optional: open it in an hex editor then change the 4 bytes at offset 0x1C00 (12 34 56 78) to change RX ID, I think you can use any arbitrary values, just avoid using FF FF FF FF" because I don't have any HEX editor on hand, is it OK?
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06 Jun 2016 00:22 - 06 Jun 2016 11:40 #50012 by goebish
All is OK, thanks for testing :)

The i6 transmitter doesn't display the new sensor, because its ID is unknown to it, you updated the RX, not the TX ;)

That's not a big deal if you don't change RX ID, no worries.
Last edit: 06 Jun 2016 11:40 by goebish.

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06 Jun 2016 00:24 #50013 by dc59

goebish wrote: All is OK, thanks for testing :)

The i6 transmitter doesn't display the new sensor, because its ID is unknown to it, you updated the RX, not the TX ;)

That's not a big deal if you don't change RX ID, no worries.


:woohoo: Good Job!! :woohoo:

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06 Jun 2016 10:56 - 06 Jun 2016 11:23 #50026 by goebish
I haven't done any work, I only extracted the firmware from an updated iA6B RX ;)
Someone on rcgroups sent me a PM to ask if I could modify the firmware to allow more than 6 channels when set to PPM output, I'll check that, I'll also try to flash the iA6B with the iA10 firmware ...

edit: I just checked and there are already 8 working channels in the PPM stream, just as with the iA10, good enough :p
Having more channels in the PPM stream is not a good idea as that would increase latency.

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Last edit: 06 Jun 2016 11:23 by goebish.

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06 Jun 2016 12:48 #50030 by povlhp
Actually, 9 channels would necesarily not add more latency, maybe it would just eat a bit of the interframe spacing.
Not sure if the firmware is using a fixed frame length or a fixed frame spacing.

From putting together the iBus2PPM code I know that there are compatibility issues when optimizing CPPM output. In theory, an interframe spacing of 3000 us should be fine, and the dynamic frame size. Works nice with BaseFlight/CleanFlightm but not APM. Will cut avg frame size down from 22500 us = 22.5ms to 1500*8 + 3000 = 15ms. Actually even lower if you plan to have high channels in the low range most of the flying time. Say most common flightmode first. But iBus2PPM is for this stuff.

8 channels over PPM is already a large step forward, and will fulfill most of my needs. And for extra channels for headtracking, I will use iBus2PPM, and get the pan/tilt output on channel 5+6 and use iBus2PPM to switch 9+10 in their place in PPM.

Now I just need my new BG CC2500 NRF24L01 A7105 Multi RF 3 IN 1 - which just shipped - has a tracking number, but it is still listed as "preorder".

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06 Jun 2016 19:29 #50055 by stinkydiver73
Replied by stinkydiver73 on topic Flysky AFHDS 2A, protocol as used i10, i6, iT4,
You can simply change rx id by simply editing the target memory at 0x08001C00 with the st-link utility. Rewrote the original rx id from the backup and selected the model memory in the tx and voila...

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06 Jun 2016 22:34 #50066 by HappyHarry
Replied by HappyHarry on topic Flysky AFHDS 2A, protocol as used i10, i6, iT4,
guys what's the difference between the fs-ia6 and the fs-ia6b? they both ;ook to use afhds 2a

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06 Jun 2016 22:37 - 06 Jun 2016 23:28 #50067 by aMax
Certainly range.... 2.3 km..:woohoo: and PPM output. (IA6B).

Edit: the other rx is marked for park flying

Devo7e, TaranisQ X7, R9M , 4in1 MM, Futaba FC18plusV3.2 & DFT/FLD-02
Last edit: 06 Jun 2016 23:28 by aMax.

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07 Jun 2016 00:34 #50068 by dc59
Incredible , that such good range and so cheap price. :woohoo:

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