Happymodel Larva X User manual

Package includes
Qty
1
4
1
4
1
1
1
2
1
1
Item Name
Larva-X HD frame (with Toothpick style canopy and Whoop style canopy)
Whoop duct for Lar va-X HD
SPI Receiver Option1: Crazybee F4FR V3.0 PRO FC built-in Frsky SPI D8 RX
SPI Receiver Option2: Crazybee F4FS V3.0 PRO FC built-in Flysky SPI RX
Receiver Option3: Crazybee F4 V3.0 PRO FC with external DSM2/DSMX RX
Receiver Option4: Crazybee F4 V3.0 PRO FC with external Frsky XM+ receiver
Receiver Option5: Crazybee F4 V3.0 PRO FC with external Frsky RXSR receiver
Receiver Option6: Crazybee F4 V3.0 PRO FC with external TBS Crossfire Nano RX
EX1203 KV6200 brushless motors
Propeller sets
CADDX Baby turtle
VTX 5.8g 25mw~200mw switchable
3S 11.1v 450mah 75c Li-po battery
5.8g Micro UXII antenna
Propeller disassemble tool
Flight controller connection diagram
Toothpick HD and Whoop HD 2 in 1 combo (Default Comes in Toothpick HD style)
Toothpick style compatible both 2.5inch or 3inch propellers
New design EX1203 High efficiency brushless motors
Caddx baby Turtle provide 1080P 60FPS DVR video
Camera Angle adjustable
Full range receiver options
Buzzer ready
Smooth and powerful
Compatible both for 2s-3s Lipo/LIHV
Features
Brand Name: Happymodel
Item Name: Larva-X HD Micro FPV brushless Drone
Wheelbase: 125mm
Size: 105mm*105mm*35mm(without propellers)
Weight: Toothpick style ductless 63g (without batter y)
Whoop style ducted 79g (without battery)
Receiver options:
Frsky SPI receiver
Flysky SPI receiver
DSM2/DSMX compatible receiver
Frsky XM+ receiver
Frsky R-XSR receiver
TBS Nano CRSF receiver
Specifications
Happymodel Larva X HD 2-3s racer drone DSM2/DSMX version
Arm/Disarm the Motor
1. The Default Arm/Disarm switch for is AUX1(Channel 5),and you can also customize it with Larva X HD
Betaflight Configurator.
3.The default channel map for Larva X HD DSM2/X version is TAER1234, please make sure your
transmitter is matched, otherwise it will can't be armed. Toggle the AUX1 Switch ,the Green LED
on the flight controller will getting to be solid, this indicates the motor was armed . And also
you can found “Armed” displayed on your FPV Goggles or the FPV Monitor. Please make sure
keep the Larva X HD level before arming .Be careful and enjoy your flight now !
Receiver configuration
2.For most of Spektrum radio the default channel 5 is Gear switch and you can also customize
it. Use DX9 for example, Go to menu and select System setup ,then choose Channel ssign.
Toggle the AUX1 Switch, the Green LED on Toggle the AUX1 Switch, the Green LED on
the Flight controller will getting to be solidthe Flight controller will getting to be solid
Toggle the AUX1 Switch, the Green LED on
the Flight controller will getting to be solid
Binding procedure
Press and hold the bind button of the Speki+ receiver ,then plug the USB. The red led on the
speki+ receiver would blinking fast , this indicate the receiver is in bind mode .
Make your Spektrum radio transmitter or multi protocol radio transmitter to bind with the
receiver , if the red LED on the speki+ receiver getting to be solid , this indicate the binding
successfully. If bind faild you need to repeat the above steps.
M1
M2
M3
M4
USB
LIPO+
GND
+5V output
GND
Video_in
Video_out
RX2
RX1
BOOT
BUZ-
BUZ+
GND
LIPO+
TX1
IRX1
LED
TX2
We have configured the receiver for the Lar va-X HD before shipping out . If you flashed the
betaflight firmware , please setup as the following steps: Enable Serial_RX for UART1 ,then
select RX_Serial from the Receiver mode and set the serial receiver provider to be SPEKTRUM
2048/SRXL. This receiver mode support both Spektrum dsm2/dsmx radio . And you need to
enable Telemetry too ,other wise the receiver will not working .
Video_in
Video_outVideo_outVideo_out
BUZ+
TX1
GND
LIPO+
TX2
+5V output+5V output+5V output
GNDGNDGND
BOOT
Red LEDRed LED
LED Blinking Fast---In Binding ModeLED Blinking Fast---In Binding Mode
LED Blinking slowly---No RC Input SignalLED Blinking slowly---No RC Input Signal
LED solid---Binding successful or RC input signal connectedLED solid---Binding successful or RC input signal connected
Red LED
LED Blinking Fast---In Binding Mode
LED Blinking slowly---No RC Input Signal
LED solid---Binding successful or RC input signal connected

VTX Bands and Channels setup
VTX power set
Go to Betaflight configurator CLI tab,type"set vtx_power=1"to choose
25mw,"set vtx_power=2"to choose 100mw,"set vtx_power=3"to choose
200mw,need to type"save"
There are 3 ways to switch the vtx channels:
1.Short press the switch button to choose the VTX channel,Press and hold the butoon for 2
seconds and release to choose the VTX band(Can't save,it will lost the channel while power off)
2.If we need to use Channel 5705 then we should Go to Betaflight CLI,type the command:
Set VTX_band=3
Set VTX_channel=1
save
3.Enable Smaraudio for UART2,then move the stick of the transmitter(THR MID+YAW LEFT
+PITCH UP)to enter OSD Menu,Enter to Features,then enter to VTX SA to set VTX Band and channel
Frequency and channel frequency table
CH
FR
Band1
Band2
Band3
Band4
Band5
CH1
5865M
5733M
5705M
5740M
5658M
CH2
5845M
5752M
5685M
5760M
5695M
CH3
5825M
5771M
5665M
5780M
5732M
CH4
5805M
5790M
5665M
5800M
5769M
CH5
5785M
5809M
5885M
5820M
5806M
CH6
5765M
5828M
5905M
5840M
5843M
CH7
5745M
5847M
5905M
5860M
5880M
CH8
5725M
5866M
5905M
5880M
5917M
LED5 LED8
5917MHZ BAND5 CH8
8,7,6,5,4,3,2,1
1,2,3,4,5
Band LED
Channel LEDChannel LEDChannel LED
Black GND
Red +5V Input
Green smare Audio
Yellow Video_IN
Blue Video_out
200MW
100MW
25MW
U.FL
Cam_IN
+5V out put
GND
Switch Button
BUZZ+
GND
Firmware update
Mixer type and ESC/motor protocol
Fix the CW propeller onto the M1
and M4 motor (CW motors)
Fix the CCW propellers onto the M2
and M3 motor (CCW motors)
Props IN
Firmware update
Whoop mode assemble
3D Print canopy
M2x7 screws
4. Open the BLHELISUITE, Select SILABS BLHeli Bootloader (Cleanflight) from the third tab on
the top side. Then Select the right Serial com por t and Click connect. You can also Flash the
new release BLHeli_s firmware via the BLHEILISUITE, the firmware Target is “F-H-40”
Flight controller firmware update
1. Install latest STM32 Virtual COM Port Driver
http://www.st.com/web/en/catalog/tools/PF257938
2. Install STM BOOTLOAD Driver (STM Device in DFU MODE)
3. Open Betaflight configurator and choose firmware target “CrazybeeF4DX”,then select the
firmware version.
4. There are 2 ways to get in DFU Mode: 1). solder the boot pad and then plug USB to computer 2).
loading betaflight firmware and hit “flash”, then it will getting into DFU Mode automatically.
5. Open Zadig tools to replace the drivers from STM32 Bootloader to WINUSB Driver.
6. Reconnect the flight controller to the computer after replace driver done , and open
Betaflight Configurator, loading firmware and flash.
Firmware target
Flash firmware Click check to see the
details of the 4in1 ESC
Happymodel Larva X HD 2-3s racer drone DSM2/DSMX version
1. Download New release Blhelisuite from:
https://www.mediafire.com/folder/dx6kfaasyo24l/BLHeliSuite
2. Plug the usb and connect the flight controller to computer
ESC Check and Flash firmware
Default PID setting
3. Open the Device Manager of your computer, find the Ports, please make sure the Com port
Serial Number is under 255, otherwise it will can't connect to the BLHELISUITE. You can change
the port serial number like the bellowing step :