FlySky AFHDS 2A

Details

Protocol Number: 28 Autobind: No Channel Re-mapping: Yes Extended Limits: Yes Failsafe Support: Yes Receiver Match: Yes Telemetry: Yes Option Value: Servo refresh rate. A value of 0 gives 50Hz (min), 70 gives 400Hz (max). Specific refresh rate value can be calculated as $option=(refreshrate-50) \div 5$

Notes

Models: FS-iA6B, FS-iA10B, etc.

FlySky AFHDS 2A is labelled FlSky 2A in OpenTX.

You must use a different Receiver Number for each different AFHDS 2A receiver you bind. Re-using numbers will remove the binding for the previous receiver.

A maximum of 64 AFHDS 2A receivers can be bound to the MULTI-Module.

Telemetry

If telemetry data is incomplete (for example, missing receiver RSSI) you need to upgrade your RX firmware to version 1.6 or later. You can do it from an original FlySky radio, or using an ST-Link programmer, as explained in this tutorial.

Suggested OpenTX RSSI alarm threshold settings:

OpenTX Version	Low Threshold	Critical Threshold
Prior to 2.3.0	15	12
2.3.0 and later	70	50

Channel Assignment

CH1	CH2	CH3	CH4	CH5	CH6	CH7	CH8	CH9	CH10	CH11	CH12	CH13	CH14
A	E	T	R	CH5	CH6	CH7	CH8	CH9	CH10	CH11	CH12	CH13	CH14

Sub Protocols

0 - PWM_IBUS

1 - PPM_IBUS

2 - PWM_SBUS

3 - PPM_SBUS

4 - PWM_IBUS16

3 additional channels. Need recent or updated RXs.

CH15	CH16	CH17
CH15	CH16	LQI

LQI: Link Quality Indicator

5 - PPM_IBUS16

3 additional channels. Need recent or updated RXs.

CH15	CH16	CH17
CH15	CH16	LQI

LQI: Link Quality Indicator