1. Introduction
This manual provides detailed instructions for the diymore NX4-PRO and NX4-EVO Fixed Wing Flight Controllers. These modules are designed to enhance the stability and control of fixed-wing RC aircraft, offering features such as automatic balance, gyroscope stabilization, and various flight modes suitable for pilots of all skill levels. Please read this manual thoroughly before installation and operation to ensure safe and optimal performance.
Image: NX4-PRO and NX4-EVO Flight Controllers, showing their compact design and port layouts.
2. Product Features
- Multi-Level Flight Modes: Offers progressive flight modes from beginner to advanced, allowing pilots to gradually improve their skills.
- Flexible Mode Switching: Seamlessly switch between stabilizing, locking, and closing modes using your remote control to adapt to different flight conditions.
- Excellent Stability Enhancement: Incorporates advanced algorithms to provide superior flight stability while maintaining responsive control.
- Simplified Setup: Eliminates the need for complex hybrid settings, making installation and initial setup quick and straightforward.
- Multiple Wing Type Support: Compatible with various fixed-wing aircraft configurations, including standard fixed wings, V-tails, and delta wings.
3. Specifications
NX4-EVO
| Parameter | Value |
|---|---|
| Input Voltage | DC 4.5-6V |
| Response Frequency | 100Hz |
| Working Temperature | 0-50 °C |
| Dimensions (L x W x H) | 43mm x 28mm x 15mm |
| Functional Features | 4 Flight Levels (Learn, Practice, Advanced, Expert), Supports Fixed Wing, V-tail, Delta Wing, Independent Potentiometer for Axis Sensitivity, Automatic Aileron Type Recognition (Single/Double), Remote Sensitivity Adjustment/Off, Automatic Balancing, One-Click Rescue, Posture Locking, Aileron Servo Y-line Function. |
NX4-PRO
| Parameter | Value |
|---|---|
| Power Supply | DC 5-6V (Directly from BEC) |
| Dimensions (L x W x H) | 44mm x 29mm x 13mm |
| Functional Features | Supports Fixed Wing, V-tail, Delta Wing, Normal Stabilization, Locking Mode, Shutdown Mode (switchable via remote), Independent Potentiometer for Axis Sensitivity, Optimized Algorithms for Stability and Responsiveness. |
Image: Comparison of dimensions for the Regular (NX4-PRO) and Updated (NX4-EVO) models.
4. Package Contents
Combination 1 (NX4-EVO)
- NX4-EVO Flight Control Board x 1
- Connection Line x 4
- Screwdriver x 1
- Sponge Sticker x 1
Image: NX4-EVO Flight Controller and included accessories.
Combination 2 (NX4-PRO)
- NX4-PRO Flight Control Board x 1
- Connection Line x 5
- Screwdriver x 1
- Sponge Sticker x 1
Image: NX4-PRO Flight Controller and included accessories.
5. Setup and Installation
5.1 General Installation
Mount the flight control board horizontally on your aircraft. Use the provided double-sided tape to firmly affix the NX4-EVO/PRO flight control board. Ensure the side labeled 'Nx4 Evo' or 'Nx4' faces upwards, and the long side of the flight control board is parallel to the aircraft's fuselage. Before each test flight, always double-check that the flight control panel is securely affixed.
Image: Proper installation of the flight control board, showing 'TOP/Labels facing up' and 'Heading Direction/Mounting Direction'.
5.2 Wiring Connections
Connect the flight controller to your receiver, servos, battery, and ESC/motor according to the diagrams below. Ensure all connections are secure and correctly oriented. This flight controller does not require mixed control settings on your remote control.
Image: Detailed wiring diagram for the NX4-EVO Flight Controller, illustrating connections for Aileron, Elevator, Rudder, Emergence, Aileron R, Elevator, Multi-channel inputs and outputs, along with battery, BEC/ESC, and motor connections.
5.3 Dip Switch Settings for Wing Types (NX4-PRO)
Adjust the DIP switches on the flight controller to match your aircraft's wing type. Incorrect settings can lead to unstable flight or loss of control.
| Wing Type | DIP Switch Setting |
|---|---|
| Common Fixed Wing (Single Aileron) | All OFF |
| Common Fixed Wing (Twin Ailerons) | AIL2 ON, others OFF |
| Delta Wing | DELTA ON, others OFF |
| V-tail | VTAIL ON, others OFF |
Image: Dip switch configuration for NX4-PRO, showing settings for various fixed-wing aircraft types.
5.4 Specific Wiring Diagrams
Single-Aisle Model
Image: Wiring diagram for a single-aisle aircraft model, detailing connections from the receiver (RX) to the Aileron, Elevating, and Rudder servos via the flight controller.
V-Tail Model
Image: Wiring diagram for a V-tail aircraft model. Note that the NX4 has built-in V-tail mixing control, so the remote control does not need to enable V-tail mixing.
Delta Wing Model
Image: Wiring diagram for a Delta Wing aircraft model. The NX4 has built-in delta wing mixing control, forcing the controller to not need to turn on delta wing mixing control.
Dual Aileron Model (Aileron Flap Mixing)
Image: Wiring diagram for a dual aileron aircraft model. This mode provides two separate aileron servo paths and does not have built-in aileron flap mixing control, which needs to be enabled by the remote control.
6. Operating Modes
The NX4-PRO and NX4-EVO flight controllers offer several operating modes, switchable via your remote control:
- Stabilizing Mode: Provides basic flight stabilization, helping to smooth out turbulence and maintain level flight.
- Locking Mode: Locks the aircraft's attitude, maintaining its current orientation.
- Shutdown Mode: Disables the flight controller's stabilization functions, allowing for direct control from the remote.
- One-Key Rescue Function (NX4-EVO): Automatically returns the aircraft to a stable, level flight attitude. Refer to the manual for specific setup, as the elevator may need to be lifted upwards and then returned to the horizontal position for proper activation.
- Posture Locking Function (NX4-EVO): Maintains a specific flight posture.
The independent potentiometers on the flight control board allow you to adjust the sensitivity of each axis (Aileron, Elevator, Rudder) to fine-tune the stabilization performance to your preference. The total sensitivity can also be adjusted remotely, and the flight control can be remotely turned off.
7. Calibration
7.1 Gyroscope Direction and Sensitivity
Adjust the working direction and sensitivity of the gyroscope using the potentiometers on the board. Verify that the working direction of each control surface (aileron, elevator, rudder) is correct. For the first flight, it is recommended to use a lower sensitivity setting.
7.2 Remote Control Neutral Point Calibration
After connecting the flight controller and setting up the remote, use the remote control mode switch to toggle back and forth. This action calibrates the neutral point of the remote control. It is crucial to recalibrate the neutral point after replacing the remote control or receiver.
8. Maintenance
- Keep the flight controller clean and free from dust and moisture.
- Avoid exposing the unit to extreme temperatures or direct sunlight for prolonged periods.
- Regularly check all wiring connections for looseness or damage.
- Ensure the flight controller is securely mounted before each flight.
- Store the unit in a dry, safe place when not in use.
9. Troubleshooting
- Aircraft unstable: Check gyroscope direction and sensitivity settings. Ensure the flight controller is mounted correctly and securely. Verify remote control neutral point calibration.
- No response from control surfaces: Check all wiring connections between the receiver, flight controller, and servos. Ensure the power supply to the flight controller is adequate (DC 4.5-6V for EVO, DC 5-6V for PRO).
- Incorrect flight mode behavior: Verify DIP switch settings match the aircraft's wing type. Ensure remote control switches are correctly assigned and functioning.
- One-key rescue not working (NX4-EVO): Confirm the elevator position during setup for one-key rescue. Ensure the function is correctly activated on your remote.
10. User Tips
- For initial flights, start with lower sensitivity settings and gradually increase them as you become more comfortable with the aircraft's response.
- Always perform a pre-flight check to ensure all control surfaces move correctly and the flight controller is functioning as expected.
- Practice in an open area away from obstacles and people, especially when trying new settings or flight modes.
- Consider using the 'Learn to Fly Mode' (NX4-EVO) to familiarize yourself with the flight controller's stabilization capabilities before attempting more advanced maneuvers.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your proof of purchase for any warranty claims.
