FLYWOO LR4 QUAD HD V1.0

1. Drone Introduction

The Explorer LR quad is a collaboration between Flywoo and Dave_C, the original creator of #micro long range. This new field offers opportunities for exploration and fun.

Long-range FPV cruising through landscapes is a primary appeal of FPV. However, practicing legally and quietly with large 6 or 7-inch long-range quads can be challenging due to noise. The #MicroLongRange project aimed to scale down a 7-inch long-range quad to under 250g take-off weight. With community support and Flywoo's development, the Explorer LR incorporates many improvements.

This compact quad features GPS, Crossfire, and an independent model finder, providing confidence for pushing the limits of digital and analog video transmission range. Its powertrain includes a GOKU 16x16 stack and new 2750kV 1404 motors spinning 4-inch props, optimized for efficiency and low weight. Flight times exceeding ten minutes on a standard 850mAh 4S LiPo battery are achievable. Cruising speeds of 40-50 kph (25-30mph) are notable for its size, enabling 10km (6 miles) round trips. A key benefit is its quiet operation, making it barely audible from a distance.

— Dave_C

2. Configuration and Wiring Diagram Description

Explorer LR 4 Vista / Nebula Pro BNF Specifications:

• Stack: Goku F411 V2.1 nano stack 16x16
• Motors: Dave_C & Nin 1404 V2 2750kv
• GPS: Goku M8N mini gps v2.0
• Finder: Flywoo Finder v1.0
• Propellers: Gemfan 4024
• Antenna: 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 & Specifications:

• Lightweight 4-inch quad under 250g, even with battery, meeting FAA regulations.
• Easy to control with long flight times, recommended for FPV beginners and cruising pilots.
• Equipped with GOKU 16X16 MICRO STACK and NIN 1404 v2-2750kv motors, supports 4S batteries.
• Up to 20 minutes of cruising flight time possible.
• Highly suitable for FPV beginners and long-range enthusiasts.
• Recommendation: Install side carbon fiber plates to increase arm strength and stability.

CLI Configuration:

Resource mapping for serial ports:

• resource SERIAL_TX 11 B06 ---- VISTA RX
• resource SERIAL_RX 11 B07 ---- VISTA TX

UART assignments:

• UART1: TBS/R9M/XM+/DSMX/SBUS receiver
• UART2: GPS module (default baud rate is 9600)
• SOFTSERIAL1: VISTA OSD UART

3. Receiver Binding

TBS NANO 915:

When the USB is connected, the receiver's green light flashes. Follow the linked video for binding instructions: [Watch TBS Nano 915 Binding Tutorial]

R9MM FCC ACCESS OTA:

Ensure your remote control supports the ACCESS protocol. Register and bind following the instructions in this video: [Watch R9MM ACCESS Binding Tutorial]

R9MM ACCST Protocol:

For ACCST protocol, follow these steps:

1. Place the following firmware files into the SD card firmware directory of your remote control:
   • R9MM firmware: FW-R9MM-ACCST_v20190201
   • R9M TX module firmware: 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, then connect it to the S.PORT port to write the firmware.
4. After both R9M TX and R9MM RX have ACCST firmware written:
   1. Press and hold the RX button, then power on. The red and green lights should be solid.
   2. Select binding on your R9MM receiver. The RX red light will flash. Then exit binding mode.
   3. Power cycle the RX. A solid green light indicates successful binding.

XM+ Receiver:

Follow these steps for XM+ receiver binding:

1. Press the XM+ receiver button and supply power via USB. The red and green lights should be solid.
2. Turn on your remote control's binding mode. A flashing green light on the receiver indicates successful binding. Turn off and restart the receiver.

3-1. Receiver Protocol and Mode Setting

Receiver Protocol:

Ensure the corresponding serial port and receiver protocol are set correctly to guarantee normal output of receiver channels.

Mode Setting:

Configure the ARM switch and flight mode switch. AUX* corresponds to the remote control switch. The yellow area indicates the switch is turned ON.

5. Motor Test

Perform the motor test with the propellers unloaded:

1. Check the rotation direction of each motor.
2. Turn on the safety switch.
3. Test the rotation of the motors one by one.

6. GPS Rescue Mode

GPS rescue mode provides safety features for your drone:

1. When the GPS acquires a lock on 5 satellites, it will display latitude, longitude, altitude, and distance information.
2. GPS rescue can only be activated when the flight distance data exceeds 100 meters. If activated below this threshold, the drone may fall.
3. Once GPS rescue is engaged, the drone will turn, gradually ascend, and return to its home location.
4. The drone will not automatically land. When control is restored, you must manually guide the drone to land.

7. Bluetooth Function

Details regarding the Bluetooth function were not provided in this document.

8. Finder Buzzer Function

The Finder buzzer has two operational modes:

1. It functions as a traditional active buzzer, synchronized with the flight controller.
2. If the flight controller is connected and the main battery loses power during flight, the Finder V1.0 will automatically emit a 100 dB beep after 30 seconds of power failure. A white LED will also illuminate.

To turn off the buzzer: Press and hold the release button for more than 2 seconds.

9. Flight Firmware Upgrade and Write Default CLI

Follow these steps to upgrade flight firmware and write default CLI commands:

1. Activate DFU mode on the flight controller.
2. The BF Configurator should display that it has entered DFU mode. If not, ensure drivers are installed. The ImpulseRC Driver Fixer can be used for installation: [Download Driver Fixer]
3. Load the local HEX firmware file and wait for the flashing process to complete. A green progress bar indicates success, and DFU mode will change to a COM port.
4. After connecting, you will see a blank interface. You need to write CLI commands. The factory CLI link is available here: [Flywoo Manual & CLI Commands]
5. If the command does not trigger a restart, write the command SAVE and press Enter to save the configuration. The FC will then restart.
6. Once restarted, all FC functions will return to normal.