EACHINE V-tail 210 QUICK START GUIDE

1.0 General Introduction

The Eachine V-tail 210 is a highly regarded FPV Racing drone, distinguished by its unique shape and appealing paint scheme. Featuring a new V-tail body design and constructed from carbon fiber material, it offers superior ruggedness and resistance to impacts. The V-tail 210 is built upon the SP RACING F3 EVO hardware platform, enabling exceptional flight performance. Its internal ARM Cortex-M4 72Mhz CPU, equipped with a Math co-processor (FPU), handles flight calculations efficiently, reducing processing time. This results in loop times up to approximately twice as fast as previous-generation STM32F1 based boards. The drone utilizes acclaimed EMAX RS2205 motors paired with Emax Lighting 20A ESCs running the latest BLHELI firmware, ensuring super-fast response, superior power, and an enjoyable FPV flying experience.

Images showing the ARF Version 1, ARF Version 2, RTF Version 1, and RTF Version 2 of the drone.

⚠️ For your safety and to avoid accidents, you must remove all propellers when connecting the V-tail 210 to a computer.

2.0 Specifications

General Specifications

• Main Rotor Dia: 127mm
• Overall (L x W x H): 224 x 188 x 75 mm
• Weight: 560g (including battery)
• Camera: 1080P HD 90° Camera
• Propeller: Gemfan 5045BN
• Remote controller: Eachine I6 (Optional)
• Receiver: Eachine X6 (Optional)
• GPS: 7M GPS (Optional)
• OSD: MWOSD R1.6
• Main Controller: SPRACING F3 EVO
• Video transmitter: TX58200 40CH 200mw
• Brushless Motor: Emax Rs2205 KV2300
• Brushless ESC: Emax 20A
• Battery: Eachine 4S 1500MAH 50C

Diagrams illustrating the overall dimensions of the drone.

Flight Controller Specification

Motor Specification

ESC Specification

Emax lightning-20A, support Li-po Battery: 2s-4s. Continuous current 20A, Burst current: 30A(10s). Oneshot125 Ready, Damping light Ready.

Camera and Video Specifications

Camera Specification

• Video format: NTSC or PAL Switchable
• Effective pixel: 1920(H)x1080(V)
• Sensor: 1/3 inch HD CMOS
• Focal length: 3mm
• Lens angle: H:90 degree V: 90 degree
• Working voltage: 5V
• Working current: 80mA
• Weight: 4g

HMDVR-HD Specification

• Video format: NTSC or PAL Switchable
• Records Effective pixel: 1920(H)x1080(V)
• Records Frame rate: 60Frames
• Compress Format: MOV
• Video Output size: 640x480
• Size: 50mm x 22mm
• Weight: 6g
• Max support 32G TF Card, Suggest Class10
• Auto-save function: Auto-save every 5 minutes

Diagram of the HMDVR-HD unit showing the Micro SD Card slot, Video IN, and Video output ports. Includes labels for 'Button A' and 'Reset Button' with instructions for recording and format change.

5.8G 40ch 200mw Video Transmitter Specification

• Wireless Channel: 40CH
• Modulation: Broadband FM
• Support Video Format: NTSC/PAL
• Video input impedance: 75 Ohm
• Audio input impedance: 10K Ohm
• Output Signal: 23~24dBm
• Output Power: 400mw(Max)
• Working voltage: 5V
• Working current: 500mA
• Connector: RPSMA Connector
• The default channel is 5917

Diagrams illustrating channel selection for the 5.8G video transmitter using DIP switches, along with frequency tables for groups A, B, C, D, and E.

3.0 Parts Identification

Main Drone Assembly

Diagram of the V-tail 210 drone with key components labeled, including motors (V2101CW, V2101CCW), ESCs (V2102ESC), camera (V2105), PDB+OSD (V2106), propellers (5045BN, 5045BNR), and frame parts.

⚠️ Cautions Propeller Installation: The side with marked characters must be up.

Parts Exploded Views

Exploded view diagrams showing the assembly of various drone parts, with labels for components like V2119, V2109GPS, V2107, V2108, V2115, V2120, V2137, V2118, V2103, V2104, V2102, V2114, V2111, V2121, V2128, V2126, V2101CW, V2117, V2122, V2101CCW, and nuts.

Parts List

PDB_OSD Main Board Connection Diagram

Diagram of the PDB_OSD Main board showing connections for Video In, Video Out, GND, +5V, 5.8G TX, F3 Configure USB Port, OSD Configure USB Port, UART2, UART3, and DSM Input. Includes labels for Front LED and Rear LED.

• VIDEO IN: Camera video in
• VIDEO OUT: 5.8G VTX video out
• F3 Configure USB Port: Connect to computer, accept Cleanflight and Betaflight.
• OSD Configure USB Port: Connect to computer, configure OSD with MWOSD GUI, must power the battery.
• UART2: Used for PPM/SBUS Receiver input or GPS
• UART3: Used for GPS or Telemetry module, unavailable when DSM Input used
• DSM INPUT: Used for DSM/DSM2/DSMX Receiver input, unavailable when UART3 used

4.0 Remote Controller (Optional)

A remote controller is included with the RTF version. The V-tail 210 features two useful flight modes: STABILIZE and ADVANCED (Rate mode), selectable via the MIX switch (SWB). It is recommended to select the appropriate mode according to your flight skills. For your initial test flight with a new quadcopter, always start with the STABILIZE mode.

MODE 2 (Throttle stick on the left)

MODE 1 (Throttle stick on the right)

MIX Switch to "2" for STABILIZE Flight Mode.

MIX Switch to "1" for ADVANCED Flight Mode.

Remote Controller Components:

• 1. Handle
• 2. Antenna
• 3. Switch A
• 4. Switch B
• 5. Switch C
• 6. Switch D
• 7. Left stick
• 8. Left trim
• 9. Right trim
• 10. Right stick
• 11. Left trim
• 12. Right trim
• 13. Up
• 14. Press the Enter key
• 15. Down
• 16. Short press the Cancel key
• 17. Code keys
• 18. Switch
• 19. LCD Display

5.0 Receiver Configuration (ARF Version)

The V-tail 210 ARF Version requires a separate receiver and radio controller. It supports PPM, SBUS, DSM, and DSMX receiver inputs.

PPM Receiver Configuration

Plug the PPM receiver into the UART2 port, then set the receiver mode to RX_PPM in the Cleanflight configurator.

Screenshot of the Cleanflight Configurator 'Ports' tab, showing serial port configurations for USB VCP, UART1, UART2, and UART3, with options for Data, Logging, Telemetry, RX, and GPS.

Receiver Mode

• RX_PPM: PPM RX input
• RX_SERIAL: Serial-based receiver (SPEKSAT, SBUS, SUMD)
• RX_PARALLEL_PWM: PWM RX input (one wire per channel)
• RX_MSP: MSP RX input (control via MSP port)

Serial Receiver Provider

Note: Remember to configure a Serial Port (via Ports tab) and choose a Serial Receiver Provider when using the RX_SERIAL feature.

• SPEKTRUM1024
• SPEKTRUM2048
• SBUS
• SUMD
• SUMH
• XBUS_MODE_B
• XBUS_MODE_B_RJ01
• IBUS

SBUS Receiver Configuration

Plug the SBUS receiver into the UART2 port. Then enable Serial_RX for UART2 and set the Receiver mode to RX_SERIAL. Select SBUS signal in the Cleanflight configurator.

DSM/DSM2/DSMX Receiver Configuration

Plug the DSM/DSM2/DSMX receiver into the DSM Port. Enable Serial_RX for UART3 and set the Receiver mode to RX_SERIAL. Select Spektrum1024 (DSM/DSM2) or Spektrum2048 (DSMX) in the Cleanflight configurator.

⚠️ Please connect GPS to UART2 when using DSM/DSM2/DSMX Receiver.

6.0 Flight Preparation and Safety

Attention Before Flight

• The V-tail 210 Quadcopter is recommended for pilots aged 14 years or older, with RC hobby experience.
• Fly the V-tail 210 only in dry weather with low wind. Avoid flying in rain or heavy foggy conditions.
• Always choose large open fields for flying. Check local laws and ordinances for legal flying areas.
• Always maintain at least 10 feet distance from the aircraft when armed to avoid injury from high-speed propellers. Always disarm before handling the aircraft.
• Do not fly close to high-voltage power lines, cell phone towers, or radio towers, as these may disrupt your control signal.
• ALWAYS check local laws BEFORE flying. NEVER fly over crowds, concerts, or sports stadiums.

7.0 Charge the Battery

Connect the power cable to the wall outlet; the power adapter accepts voltage from 100V to 240V. When correctly powered, the charger LED Screen will display.

Insert the Lipo battery balance plug into the Charsoon DC-4S charger.

During charging, the LED screen will display the total battery voltage and single cell voltage cyclically. When charging is completed, the total voltage should be 16.8v (±0.1v~0.2v) as shown on the LED Screen.

⚠️ IMPORTANT ISSUE YOU MUST PAY ATTENTION TO:

• The DC-4S Charger can ONLY be used for 2s/3s/4s batteries. NEVER attempt to charge more than one battery at any time, as the charger may get damaged or catch fire.
• During charging, the DC-4S should be placed in a dry and ventilated place, far away from heat sources and flammable or explosive substances.
• Always remove the battery from the aircraft before charging.
• Never charge unsupervised; stay close and keep an eye on the charger for the entire duration of the process.
• Always allow the battery to cool down before charging, for at least 10 minutes. Overheated batteries may swell or catch fire while charging.
• Before connecting the battery, ensure the polarity is correct.
• Avoid dropping a charging battery.
• DO NOT charge a damaged battery; if the battery has cuts, swelling, or is bent, do not charge.
• Dispose of damaged batteries by submerging them in a pot of salt-water for 30 minutes, then take them to a battery recycling facility.

Diagram of the battery charging setup showing connections between the power adapter, Charsoon DC-4S Balance charger, and the 14.8V Lipo battery.

8.0 Ready for Flight

Propeller Installation

Fix the 5045BN propeller (Counterclockwise) onto the M1 (CW motor Inverted mounted) and M4 motor (CCW motor). Fix the 5045BNR propeller (Clockwise) onto the M2 (CW motor) and M3 motor (CCW motor Inverted mounted).

Use Counterclockwise rotation to tighten the Black propeller Locking Nut and Clockwise rotation to tighten the Silver propeller Locking Nut. Tighten the propeller locking nut manually and ensure the propeller is installed correctly and fastened.

Diagram showing motor and propeller installation for the V-tail 210. Labels indicate CW/CCW motors, inverted mounted motors, and propeller types (5045BN, 5045BNR) with their respective locking nuts (Black, Silver).

⚠️ IMPORTANT NOTES: The side with marked characters must be up.

Battery Installation

First, place the battery anti-slip mat into the bottom carbon board. Position the battery at the bottom and adjust it forward-backwards as required for perfect balance, ensuring no interference with other equipment. Firmly secure the battery with the velcro strap.

Attention for First Flight

1. Place the aircraft in a wide open space, with the rear facing you (this position is known as “TAIL IN”).
2. Put the SWB switch to the 2 position (Please set the flight model to STABILIZE if yours is not an RTF Version). Set all trims and dials to the Middle position, move the throttle to the lowest position, then turn on the Remote Controller.
3. Video receiving equipment (such as an FPV monitor with a 5.8G wireless video receiver, goggles, etc.) is needed to display an image and OSD information.
4. The V-tail 210 mini-quad has a low-voltage alarm beeper. The OSD provides a visual reference for remaining battery power, flight time, flight height, attitude line, flight speed, coordinates, and direction. When the voltage drops below 14.0 volts, the beeper will sound an alarm. The V-tail 210 mini-quad is designed for FPV racing and does not have an “automatic landing mode”.

9.0 Operation

Motor ARM/DISARM

The Vtail-210 ARF/RTF is set with AUX1(CH5) to ARM/DISARM the motor. For the RTF Version, AUX1(CH5) is the SWA Switch. For the ARF Version, you need to set this up yourself. You can also customize the ARM/DISARM function to any switch using the CLEANFLIGHT CONFIGURATOR.

Screenshot of the Cleanflight Configurator 'Modes' tab, showing settings for ARM and ANGLE, with adjustable ranges for AUX1 and AUX2.

First, check that all trims are neutral and the throttle stick is ALL the way Down, indicating 0% throttle.

Push the SWA MIX switch to the “2” position. You will see all the LED lights turn blue, and the buzzer will issue a "B~B" sound, indicating that the motors are armed. Be very careful at this point, as pushing the throttle up will start the motors. You can test this by pushing the stick up slightly; the motors should start.

Push the SWA MIX switch to the “1” position. You will see the front LED light turn green, and the buzzer will issue a "B~B" sound, indicating that the motors are disarmed.

Visual representation of Motor ARMED state (SWA Switch to '2') and Motor DISARMED state (SWA Switch to '1'), showing LED colors and buzzer sounds.

TEST: Push the throttle stick up slightly; the motors will not start when disarmed.

Proximity FPV Obstacle Flying

Illustration depicting proximity FPV obstacle flying, showing a drone navigating through a course of obstacles.

Attention

1. Proximity FPV obstacle flying is more suitable for experienced pilots; high-speed obstacle avoidance flights require advanced skills.
2. Recommended FPV range is 200m, depending on the environment.
3. Avoid flying over people, animals, crowds, concerts, or sports stadiums. Avoid flying close to power lines and cell phone towers, as these may cause you to crash.

End Flight

Land the aircraft and disarm (lock) it. First, power off the aircraft by unplugging the battery, then turn off the radio. Finally, remove the battery from the aircraft.

10.0 Firmware Flash for The V-tail 210

The following tutorial covers flashing Cleanflight Firmware onto the F3 EVO Flight Controller. Betaflight uses the same steps as Cleanflight.

Installing the ST Drivers (For Windows Only)

Download and install the DfuSe demo package. Open an explorer window and browse to (assuming you've installed to the default path) C:\Program Files (x86)\STMicroelectronics\Software\DfuSe v3.0.5\Bin\Driver. Browse two folders deeper to the folder relative to your Operating System version (x86-32bit or x64-64bit variant). Click the dpinst_x##.exe to install the driver.

Screenshot showing driver files for STMicroelectronics DfuSe package, including dpinst_amd64.exe, with an 'Install' button.

Installing Cleanflight Configurator (For Windows Only)

It is suggested to use Cleanflight Configurator v 1.2.3 or its newest release. The following assumes you also have the Chrome Browser installed. Get the latest Cleanflight Configurator (+ Add to Chrome).

Screenshot of the Chrome Web Store page for the Cleanflight Configurator extension.

Replacing the ST Driver with WinUSB Driver (For Windows Only)

1. Connect the V-tail 210 to your computer through the F3 configure USB port.
2. Open the Cleanflight Configurator; you should see the serial COM port.

Screenshot of the Cleanflight Configurator interface showing the COM port selection dropdown and connection status.

Firmware Flash Procedure

1. Click the "Firmware Flash" menu, select the latest firmware for the F3 EVO flight controller, and load firmware [online] or load firmware [Local].

Screenshot of the Cleanflight Configurator 'Firmware Flasher' tab, showing firmware selection options and buttons for 'Flash Firmware', 'Load Firmware [Online]', and 'Load Firmware [Local]'.

3. Click "Flash Firmware" and wait for the ST DFU DRIVER Automatic installation. It is successfully installed when you see the DFU port in the upper right corner.

Screenshot of the Cleanflight Configurator showing 'DFU' port detected, indicating successful driver installation.

4. Download and launch Zadig.

Zadig Driver Installation

1. From Zadig, select Options, then tick List All Devices.

Screenshot of the Zadig application with the 'Options' menu open, showing 'List All Devices' checked.

6. Select STM32 Bootloader from the dropdown. Choose WinUSB as the replacement, then click Replace Driver. If the progress is slow or unresponsive, close and retry. Ensure the dropdown shows WinUSB.

Screenshot of the Zadig application showing 'STM32 BOOTLOADER' selected and 'WinUSB' chosen as the driver to replace.

* Credits for the Zadig option: Cleanflight Docs.

Final Flash Firmware Step

Go back to the Cleanflight Configurator and click "Flash Firmware" again after the driver replacement is completed. You will see the firmware flashed successfully!

11.0 How to Install MW OSD Firmware to the V-tail 210

Preparation

• Download the MW OSD software pack of your choice.
• Download the Arduino flavor that matches your system.

Testing Firmware Communication Flashing

• Connect the V-tail 210 to the computer through the OSD configure USB port and power on the aircraft with the battery.
• Start Arduino IDE.
• Choose the appropriate board: Tools > Board > Arduino Pro or Pro Mini 5V, 16MHz, w/ ATmega328.
• Select the proper serial port in menu Tools > Serial Port.
• Click on the "Upload" button and observe the serial console at the bottom of Arduino. Success is noted as white text on black background stating the binary sketch size. If messages in red letters appear, something went wrong.

Firmware Flashing (Arduino IDE)

• Connect the OSD to the FTDI adapter, and that to the PC.
• Start Arduino IDE.
• Select File > Open. Browse to the MW_OSD folder and select 'MW_OSD.ino'.
• A new Arduino IDE window will appear. Close the other window as it is no longer needed.
• If you have not already done so, ensure the following: From the MW_OSD Arduino window, choose the appropriate board: Tools > Board > Arduino Pro or Pro Mini 5V, 16MHz, w/ ATmega328. Select the proper serial port in menu Tools > Serial Port.
• Edit the config.h tab to select the correct OSD hardware, Flight controller, and aircraft type.
• Click on the "Upload" button and observe the serial console at the bottom of Arduino. Success is noted as white text on black background stating the binary sketch size. If messages in red letters appear, something went wrong.

To test the setup, close Arduino and start the MW OSD GUI. It should connect and work normally with the newly flashed OSD.

Updating Fonts

• Connect to the OSD using the GUI.
• Select the font you require; otherwise, the default one will be used.
• The font chosen will be seen in the simulator window.
• Select upload from the GUI.
• NOTE: Check the FAQ - requires the OSD to be powered correctly, or the fonts will not save (upload looks OK).

Save OSD Configuration

If the OSD display is not full to the FPV screen or you changed the Video format, by short pressing the HMDVR-HD, you should change the Video format in the MWOSD GUI to match the video output. Don't forget to click "write" to update after you changed the settings.

12.0 How to Use Bluetooth with V-tail 210

Enable MSP for UART3, then connect Bluetooth to UART3. (When UART3 is connected to Bluetooth, DSM input is unavailable). Power on the battery for the V-tail 210. Use your Android mobile phone to match with the Bluetooth.

Download the EZ-GUI APP to your Android mobile phone from Google Play. Go to Settings, select the Bluetooth option, and press the "Select MultiWii BT" button. The list with available devices will be shown. Choose the correct one, and you are ready to go.