XK A110 3 channel plane

Looks like it's using a PANxxxx MCU with built-in XN297L transceiver, it should be possible to deviate it, but only with SDR, not with a logic analyzer ...

Can you try to bind with GD00X protocol ?
(available in latest nightly build)

No, that's a PA/LNA.

KN protocols are using a nrf24l01, but the PAN163CX MCU in this TX has a XN297L transceiver, therefore that's a different protocol.

V911S is a recent protocol, it's for the "stabilized" (6G) version of the WLToys V911.
https://www.banggood.com/WLtoys-V911S-2_4G-4CH-6-Aixs-Gyro-Flybarless-RC-Helicopter-RTF-p-1318778.html

Rate is automatically set to maximum, channel 5 is used to start accelerometer calibration on the V911S, I don't know if it's used on the A110.

This protocol is known to be problematic because it's using xn297L emulation @250kbps, it requires an accurate crystal oscillator for the nrf24l01 and it doesn't work (or not very well...) with every modules, this is an hardware issue, there's nothing we can do about it in the firmware:
www.deviationtx.com/forum/protocol-devel...911-s?start=20#71646
That's not a power saturation issue, but frequency drift, we transmit on 24xx MHz, but the XN297L listens to 24xx.2 MHz, depending of the crystal oscillator (in)accuracy on both sides, it might work ... or not ... This is only an issue @250kbps, no problem with xn297@1Mbps protocols.

The EAchine E010 is using xn297l@250kbps as well, and many people have the same issue.

Are you using a X-in-1 module or a separate nrf24l01 module ?
Recent 4-in-1 modules and separate nrf24l01+pa/lna modules seems to work better (no guaranty tho!).

I should add a note about those XN297L@250kbps protocols (i6S, E010, Q303, V911s, GD00X) in the documentation, but I'm not sure how to write (word) it ...

Anyway, I'm adding the XK A110 to the compatibility list

I do not have a V911S but I suppose you've to put it on level surface, set CH5 to 100 then wait a few seconds until the leds flash or stop flashing.

SPI bus is not exposed, that's a PAN163CX + PA/LNA

XK A100 use S-FHSS compatible protocol

Are you sure ?
According to pictures on banggood, the A100 and A110 are using the same Tx (V911S compatible).

The XK K100 uses S-FHSS

Sorry, it's for XK K100

Found next message:

"In conclusion, the new protocol of WLToys and XK are the same, V911S and A110 can bind to each other"

結論から言えば、WLToysとXKの新プロトコルは同じで、V911Sと A110は相互にバインド可能です。PAN163CXというRF統合1チップマイコンが同じなんですが、どうやらコードも同じようでｗ