Flywoo Explorer LR 4 Quad HD F745 V1.0 Manual

1/ Drone Introduction

The Explorer LR quad is a product of collaboration between Flywoo and #micro long range creator Dave_C. #Micro long range represents a new field, and Flywoo aims to explore more fun in this area with Dave_C.

Dave_C personally finds long-range cruising through epic landscapes to be the best aspect of FPV. However, practicing legally and without disturbing others with the noise of larger 6 or 7-inch long-range quads was challenging. The core idea behind the original Project #MicroLongRange was to scale down a 7-inch long-range quad to be under 250g take-off weight. With community support and Flywoo's development efforts, this concept has been refined and implemented in the Explorer LR.

This compact quad is equipped with GPS, Crossfire, and an independent model finder, providing the confidence needed for maximum range with digital and analog video transmission. Its powertrain features the GOKU 16x16 stack and the new 2750kV 1404 motors spinning 4-inch props, optimized for efficiency and low weight. Flight times exceeding ten minutes are achievable with a standard 850mAh 4S LiPo battery. Cruising speeds of 40-50 kph (25-30 mph) are impressive for its size, enabling easy 10km (6-mile) round trips. Notably, the drone is exceptionally quiet, barely audible from a few dozen meters away.

- Dave_C

2/ Configuration and Wiring Diagram Description

Explorer LR 4 Vista / Nebula pro BNF Specification:

• Goku F745 nano stack 16x16 quad
• Dave_C & Nin 1404 V2 2750kv motors
• Goku M8N mini gps v2.0
• Flywoo Finder v1.0
• Gemfan 4024 props
• Atomic 5.8 G antenna LHCP
• VTX: CADDX VISTA

Recommended Battery:

• Naked GoPro & SMO 4K & Insta360 go
• Explorer 18650 / Tattu 1050 4s mah
• 650 4s mah

Highlights & Specification:

• Equipped with GOKU HEX F745 16X16 NANO STACK and NIN 1404 v2-2750kv motors, supporting 4S batteries.
• Features a powerful F745 BGA chip, barometer, black box, and WS2812LED.
• Supports 7 complete hardware serial ports, I2C, and other open functions, meeting all FPV needs.

UART Configurations:

• UART1: TBS/R9M/XM+/DSMX/SBUS receiver
• UART2: GPS module, default baud rate is 9600
• UART3: VISTA OSD TX/RX
• UART4: VISTA SBUS RX (Use only with DJI remote control; turn off RX1)
• UART5: Bluetooth module, default baud rate is 115200
• UART6: NULL
• UART7: NULL

3/ Receiver Binding

TBS NANO 915:

When the USB is connected, the green light on the receiver flashes. Bind according to the picture operation. For detailed steps, refer to: YouTube Guide.

R9MM FCC ACCESS OTA:

Ensure your remote control supports the ACCESS protocol. Follow the link to register and bind: YouTube Guide.

For ACCST Protocol:

1. Copy the following files to the firmware directory of your remote control's SD card:
   • R9MM firmware: FW-R9MM-ACCST_v20190201
   • R9M TX module: FW-R9M-ACCST-20190117
2. Insert the R9M TX module and write the desired firmware.
3. To write the firmware for the R9MM receiver, remove it and connect it to the S.PORT port for firmware writing.

Binding Method (after R9M TX and R9MM RX are flashed with ACCST firmware):

1. Press and hold the RX button, then power on. Red and green lights should be constantly lit.
2. Select binding on R9MM; the RX red light will flash, then exit.
3. Power on the RX again; a single green light indicates successful binding.

XM+ Receiver:

1. Press the XM+ receiver button, and power via USB. Red and green lights will be constantly lit.
2. Turn on the remote control's binding mode. A flashing green light indicates successful binding. Turn off and restart.

Finally, set the corresponding serial port and receiver protocol to ensure correct channel output.

4/ Mode Setting

Configure the ARM switch and flight mode switch. AUX channels correspond to remote control switches. The yellow marked areas in the Betaflight Configurator indicate active settings.

(Visual description: The Betaflight Configurator interface shows sliders and dropdowns for AUX channels linked to modes like ARM, ANGLE, HORIZON, HEADFREE, FAILSAFE, and GPS RESCUE. Users assign specific switch positions on their remote control to these AUX channels to activate different flight modes.)

5/ Motor Test

Before testing, unload the propellers. Turn on the safety switch and test the rotation direction and speed of each motor individually.

(Visual description: A diagram shows the drone's frame with motors labeled M1, M2, M3, M4. Arrows indicate the correct propeller installation direction. A separate section shows the Betaflight Configurator's motor tab with sliders to control individual motor speeds and a graph displaying voltage and amperage.)

6/ GPS Rescue Mode

GPS rescue mode activates when the drone has found 5 satellites and locked their positions, displaying latitude, longitude, altitude, and distance information.

This mode can only be enabled when the flight distance exceeds 100 meters; otherwise, the drone will fall directly.

Once activated, the drone will turn around, gradually ascend, and return to its home location. The drone will not automatically land; manual control is required to land after control is restored.

(Visual description: A screenshot from the drone's FPV feed shows GPS data including distance (113m) and satellite count (9). Another section shows Betaflight Configurator settings for Failsafe, including channel fallback settings and GPS Rescue activation via AUX channels.)

7/ Bluetooth Function

The drone supports Bluetooth connectivity for configuration via the Speedy Bee or Betaflight APP. This allows for real-time adjustments to OSD (On-Screen Display) settings, sensor data monitoring (gyro, accelerometer, magnetometer, barometer, GPS, sonar), and system configurations like mixer type, motor direction, and PID tuning.

(Visual description: The interface shows a QR code for the Betaflight APP. Screenshots display the Speedy Bee app interface, showing connected devices, sensor readings, OSD configuration options, and system settings for the drone.)

8/ Finder BUZZER Function

The Flywoo Finder V1.0 buzzer has two operational modes:

1. It functions as a traditional active buzzer, synchronized with the flight control.
2. If the main flight battery loses power while the flight control is connected, the buzzer will automatically emit a 100 dB sound after 30 seconds, and the LED will turn white.

To turn off the buzzer, press and hold the release button for over 2 seconds.

(Visual description: An image shows the Flywoo Finder V1.0 module attached to the drone, highlighting the 'BUTTON'.)

9/ Flight Firmware Upgrade and Write Default CLI

1/ Activate DFU Mode:

To upgrade firmware, first activate DFU mode on the flight controller.

2/ BF Configurator and Driver Installation:

Use the Betaflight Configurator. If DFU mode is not entered, the ImpulseRC Driver Fixer software may need to be installed. The driver software can be downloaded from: ImpulseRC Driver Fixer.

3/ Flashing Firmware:

Load the local HEX firmware file. A green progress bar will indicate completion, and the DFU device will then appear as a COM port.

4/ Writing CLI Commands:

After connecting, the interface will be blank. You need to input CLI commands. The factory CLI link is available at: Flywoo Manual Page.

5/ Saving Configuration:

If the command does not restart the FC, type 'SAVE' and press Enter to save the changes, which will then restart the flight controller.

6/ Restoring Functions:

After saving and restarting, all FC functions should return to normal.

(Visual description: Screenshots show the Betaflight Configurator interface during firmware flashing, including selecting the target board, firmware version, and flashing progress. Other screenshots illustrate the CLI interface for entering commands and the final state of the configurator after successful flashing.)