Currently, there are two major design approaches regarding small FPV racing drones, the Happymodel Larva X HD seems to fit for both of them. It can be conveniently converted from a Toothpick into a TinyWhoop.
Each arm of the 125mm size carbon fiber frame is equipped with an EX1203 motor. The Larva X HD is compatible with 2.5 and 3″ propellers.
The on-board Caddx Baby Turtle FPV camera features integrated DVR (1080@60fps recording) and angle adjustment. The real-time image transmission is achieved using a 5.8G VTX with 40 channels and adjustable broadcast power. According to your needs, you can toggle between 25 and 200mW even remotely, thanks to the SmartAudio feature.
Happymodel Larva X HD features & specs
- 2 in 1 design – it can be conveniently converted from Toothpick to TinyWhoop;
- 125mm size carbon fiber frame w/ removable blade protectors and protective canopy;
- 2.5/3 inch propeller compatible;
- Crazybee F4FR PRO flight controller;
- Onboard 12A 4in1 ESC;
- EX1203 high efficiency brushless motors
- Multiple radio options (Frsky SPI D8/XM+/RXSR, FlySkpy SPI, DSMX/DSM2 or TBS CRSF Nano);
- 5.8G 40CH 25-200mW VTX;
- Caddx Baby Turtle Camera with 1080p@60fps DVR;
- 2-3 LIPO compatible.
Larva X HD drone main parts details
Crazybee F4FR PRO Flight controller specs
- Frsky SPI RX version: CRAZYBEE F4FR PRO V3.0 Firmware target: CrazybeeF4FR;
- Flysky SPI RX version: CRAZYBEE F4FS PRO V3.0 Firmware target: CrazybeeF4FS;
- External RX version: CRAZYBEE F4 PRO V3.0 Firmware target: CrazybeeF4DX;
- MCU: STM32F411CEU6 (100MHZ, 512K FLASH);
- Sensor: MPU-6000(SPI connection);
- Power supply: 2-4S battery input (DC 7-17V);
- Built-in 10A(each) Blheli_S 4in1 ESC Dshot600 ready;
- Could add external receiver on the FC board;
- Built-in Betaflight OSD (SPI Control);
- Built-in Current meter Max 70A;
- Current meter scale set to 470;
- Built-in 5V 1A BEC;
- Built-in voltage detection;
- Board Size: 28.5x 28.5mm.
Onboard 12A 4in1 ESC specs
- MCU upgraded to EFM8BB21;
- Power supply: 2-4S LiPo/LiPo HV (7v/17v);
- Current: 10A continuous peak 12A (5 seconds);
- Support BLHeliSuite programmable;
- Factory firmware: F_H_40_REV16_7.HEX;
- Default protocol: DSHOT600.
FPV transmitter specs
- Frequency: 5.8GHz 5bands 40 channels (including raceband);
- Output power: 25~200mw switchable;
- Input voltage: 3.3V 5.5V;
- Current consumption: 300mA;
- Antenna: Micro UXII Antenna;
- Smartaudio ready;
- Weight: 3 grams.
EX1203 6200KV Motor specs
- Configuration: 9N12P;
- Stator Diamter: 12mm;
- Stator Length:3mm;
- Shaft Diameter: Φ1.5mm;
- No.of Cells: 2-3S Lipo.
- Motor Dimension: (Dia.*Len): Φ15x5mm;
- Weight: 4.7 grams.