Song Yang X25(Syma X9 OEM?)

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19 Dec 2015 02:41 #41027 by micro heli club
Song Yang X25(Syma X9 OEM?) was created by micro heli club
Hello~~~

Is it possible by DEVO7E to make them bind Song Yang X25(FLYING CAR)25?
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02 Apr 2016 15:40 - 02 Apr 2016 15:43 #45656 by BirdBarber
Replied by BirdBarber on topic Song Yang X25(Syma X9 OEM?)
I just ordered a SY X25 and am going to test it with the Syma protocols since it looks like it might be the same thing as the Syma X9.
Last edit: 02 Apr 2016 15:43 by BirdBarber.

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08 Apr 2016 19:18 - 08 Apr 2016 21:20 #46121 by BirdBarber
Replied by BirdBarber on topic Song Yang X25(Syma X9 OEM?)
I finally got mine and tried a bunch of the more popular protocols with no success. I haven't tried all protocols with all sub-menu options yet, there are a ton of them! I was hoping somebody might be able to narrow down the list using the attached photos of the TX internals. I used an 8S with NRF24L01 & A7105 modules, and a nightly build I downloaded on Jan 26th 2016 (v4.0.1-2a4077a).

These are pictures from inside the Song Yang TX. There are only 2 large chips, only one is marked. It looks like a NST LT8910SSC 1530. It also looks like there is a PCB trace between the antenna and the LT8910, so it should be the transceiver. I can't see any markings on the other chip, and I used a digital microscope and tried all sorts of light angles with no success.

Edit: I found an Arduino library for the LT8900 / LT8910: forum.arduino.cc/index.php?topic=324539.0
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Last edit: 08 Apr 2016 21:20 by BirdBarber.

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08 Apr 2016 22:15 #46136 by victzh
Replied by victzh on topic Song Yang X25(Syma X9 OEM?)
LT8910 has an unpleasant feature - it can be run at unsupported by current emulation layer data rate - 62.5kbps. Chance are slim so far, but I'm looking at similar L6052.

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