After several months of research, the greatest combination of F405 4S Brushless Flight Controller with BLHeli_32 16A ESC has been released which totally supports 4S power with a steady performance. BLHeli_32 16A ESC is customized for Beta85X whoop drone. Meanwhile, Beta85X is the first micro drone with a BLHeli_32 ESC at present.

BLHeli_32 is the 3rd generation ESC firmware after BLHeli and BLHeli_S, which is written for ESC's that utilize 32-bit MCU. With the increase in processing power, faster input signals with lower latency and higher update rate would be possible in BLHeli_32, such as Dshot1200!

Know more about BLHeli_32 ESC from Oscarliang's blog.

Check out Joshua Bardwell's video to know every detail of BLHeli_32

SPECIFICATIONS OF FC

• CPU: STM32F405 (Overclock to 240MHz)
• Six-Axis: MPU6000
• Size: 26mm x 26mm, whoop mounting pattern
• Firmware version: BETAFPVF405 (BEFH)
• OSD: Built-in BetaFlight OSD (STM32 controls OSD chip over SPI in DMA mode)
• RX3 and TX3 are with auto inverter, supporting all RX including TBS Micro RX
• TX01 and RX01 ports are available for Frsky F-Port, DSM2/DSMX
• Buzzer solder pads
• Support programable LED like WS2812 etc
• Weight: 4.2g

DIAGRAM FOR F405 4S FC

SPECIFICATIONS OF ESC

• Support BLHELI_32
• Support PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600, Dshot1200
• Input voltage: 3-4S lipo
• Cotinue current: 16A
• Peak current: 19A
• Firmware target: BETAFPV-16A-32bit
• MCU: STM32F051K66
• Motor Connectors: 1.25mm header pins connector
• Weight: 4.4g (7.7g with XT30 cable)

DIAGRAM FOR F405 4S FC

PARTS UPDATED

• F405 4S FC board has added extra 4 pluggable ports for ESC, VTX, RX and LED board, convenient installation and decreasing the dislocated PIN mounting.

• Using single N-channel MosFETs on ESC board, which has a lower inner resistance. It is dual MosFETs on the original BLHeli_32 ESC board. Current sensor included.

• BLHeli_32 ESC is soldering with 25V/220uf electrolytic capacitor, for reducing the defective rate caused by the instantaneous high voltage.

HOW TO ASSEMBLE FC & ESC

In order to be convenient for the installation and decrease the dislocated PIN mounting, we have added a port for ESC connection. Separate installation, in case the mutural vibration may interfere between FC and ESC.

HOW TO ASSEMBLE FC & LED BOARD

In order to be convenient for the installation, we have added a port for LED board connection.

RECOMMENDED RECEIVER CONNECTION

In order to be convenient for the installation, we have added a port for RX connection. All the ports are available on this board. So that you could connect any receiver you want on the board. For example.

• Frsky XM/XM+ Receiver
• Flysky Receiver
• TBS receiver
• DSMX receiver

Here is the connection diagram with Frsky XM receiver or XM+ receiver

Here is the connection diagram with Flysky receiver.

Here is the connection diagram with Futabe-X-BOSS AC900 receiver.

Here is the connection diagram with TBS Crossfire receiver.

Here is the connection diagram with DSMX FullSpeed receiver.

RECOMMENDED PARTS LIST

• Frame: Beta85X frame
• Motors: 1105 5000KV motors with 1.5mm header pins connector
• Battery: 450mAh 4S battery
• Props: 2" 4-Blades Props

PACKAGE

• 1 * F405 4S Brushless Flight Controller
• 1 * 16A BLHeli_32 ESC
• 1 * 4P Cable for RX
• 1 * 3P Cable for LED board
• 4 * M1.4x4mm screws
• 4 * 1.2mm Anti-vibration ruber dampers