FS-ZCZ-STW01 assembly seat is a potentiometer steering wheel assembly seat. This assembly seat simulates the control angle of a real car steering wheel and can provide a simulated driving experience. This assembly seat is compatible with transmitters such as FS-ST8 and FS-i6S. This article mainly introduces how to use FS-ZCZ-STW01 with FS-I6S/FS-ST8.
TX |
Install on the left joystick |
Install on the right joystick |
Does the transmitter support joystick calibration |
Steps |
FS-ST8 |
No need to adjust the joystick line sequence |
Need to adjust the joystick line sequence |
Supported |
Need to flash the potentiometer version firmware |
FS-I4 |
/ |
/ |
/ |
ODM/OEM |
FS-I4X |
/ |
/ |
/ |
ODM/OEM |
FS-I6 |
/ |
/ |
/ |
ODM/OEM |
FS-I6X |
Need to adjust the joystick line sequence |
No need to adjust the joystick line sequence |
Not supported |
Need to adjust the joystick line sequence |
FS-I6S |
Need to adjust the joystick line sequence |
No need to adjust the joystick line sequence |
Supported |
Need to adjust the joystick line sequence |
FS-ST8 potentiometer version firmware:https://www.flysky-cn.com/st8-downloads
Installation video reference link:https://www.youtube.com/watch?v=SLNPjMSDlDw
Learn More
FS-ST8 line sequence adjustment diagram

Calibration steps:
Before calibration, make sure the transmitter has entered the joystick calibration mode (the method can be found in the transmitter manual)
1. Enter the calibration mode:
Use a slender tool to press the self-reset button calibration hole for 3 seconds, and the turn signals on both sides are always on.
2. Center calibration:
Short press the self-reset button once, the turn signal flashes once, and the center calibration is completed.
3. Minimum/maximum calibration:
Short press twice → the turn signal flashes twice (minimum calibration); short press 3 times → the turn signal flashes 3 times (maximum calibration)
4. Exit calibration:
Press the calibration hole for 3 seconds, and the turn signal is completely off.
5. Steering wheel calibration:
Release after turning left and right, and the steering wheel will complete the minimum and maximum calibration.
Note: If the calibration fails, repeat the above steps; FS-I6, FS-I4 and other models need to be used with the factory, and do not support user calibration.
Frequently Asked Questions
1. Which models are compatible?
A: Car, ship models, etc.
2. How many turns can the steering wheel make?
A: 1.5 turns 540° on each side (total 1080°), simulating the feel of a real car
3. Is the connection cable standard?
A: Users need to prepare or DIY, and it is recommended to use a 1.5mm terminal cable (length: 10cm)
4. Will the battery life be affected after installation?
A: Low power design, with FS-ST8 using Nanfu batteries, the battery life is ≥20 hours
5. Can the resistance of the steering wheel assist device be adjusted?
A: Manual adjustment is not supported; its preset resistance has optimized the one-handed operation experience. If greater resistance is required, you can try to install an anti-slip pad
6. Can it be adapted to non-Fushi brand potentiometer transmitters?
A: If the installation holes of the transmitter assembly seat are consistent, you can physically install and use the basic steering function, but the calibration function and turn signal prompt may not be compatible
7. Does it support firmware upgrades?
A: No