Mini Stack: F405 Mini FC + 50A Mini ESC 4 in 1

Name: Mini Stack: F405 Mini FC + 50A Mini ESC 4 in 1
SKU: 39268
Price: 55.90 USD
Availability: InStock

Compact flight control and power system optimized for 2–4" micro FPV drones, combining the processing power of STM32F722 with AT32-based ESC

Designed by ChatRobotic FPV Drones in China

Mini Stack: F405 Mini FC + 50A Mini ESC 4 in 1 1

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Compact flight control and power system optimized for 2–4" micro FPV drones, combining the processing power of STM32F722 with AT32-based ESC

Mini Stack: F405 Mini FC + 50A Mini ESC 4 in 1 20x20 hole Technical Brief System Overview Compact flight control and power system optimized for 2–4" micro FPV drones, combining the processing power o…

Mini Stack: F405 Mini FC + 50A Mini ESC 4 in 1 20x20 hole Technical Brief

System Overview

Compact flight control and power system optimized for 2–4" micro FPV drones, combining the processing power of STM32F722 with AT32-based ESC efficiency in a 20×20mm stackable footprint.

1. Flight Controller Specifications

Parameter	Specification
MCU	STM32F722RET6 (216MHz Cortex-M7)
IMU	ICM-42688-P (SPI, 32kHz gyro) :cite[3]:cite[6]
Blackbox	16MB Flash (8kHz logging) :cite[3]:cite[8]
Input Voltage	2–8S LiPo (7.4–25.2V) :cite[2]:cite[3]
BEC Outputs	5V@3A + 9V@2.5A :cite[6]
Connectivity	5x UART, 1x I²C, 1x Bluetooth (UART4) :cite[6]
USB Interface	Type-C :cite[3]:cite[6]
OSD Chip	AT7456E (Betaflight OSD) :cite[3]:cite[8]
Board Size	28.2×28.1mm :cite[2]
Board Weight	8.1g :cite[3]

2. 30A 4-in-1 ESC Specifications

Parameter	Specification
MCU	AT32F421K6U7 (120MHz Cortex-M4)
Continuous Current	40A/channel (120A total)
Burst Current	50A/channel (10 sec) :cite[5]
Protocols	DShot150/300/600, Proshot, PWM :cite[5]
Input Voltage	2–6S LiPo (7.4–25.2V)
Current Sensor	±2% accuracy shunt resistors
Board Size	30×30mm
Board Weight	14.5g :cite[5]

3. Combined Features

Power System

Integrated PDB: Direct battery-to-ESC power distribution :cite[3]
Surge Protection: 25V transient voltage suppression (TVS diodes) :cite[4]
LC Power Filter: Reduces noise for clean gyro performance :cite[3]:cite[6]
Stackable Design: 20×20mm mounting pattern with M2 screws :cite[5]

Integration

DJI Air Unit Plug-and-Play: Dedicated connector for seamless digital HD setup :cite[3]:cite[6]
ESC Telemetry: Real-time current/voltage monitoring via UART6 :cite[1]:cite[2]
Bluetooth Tuning: Wireless parameter adjustment via mobile app :cite[6]

4. Safety Features

Flight Controller Protections

Protection Type	Specification	Implementation
Voltage Spike Protection	25V continuous / 30V transient	TVS diodes + LC filter :cite[3]
Gyro Vibration Damping	>8kHz reduction by 85%	Silicone gasket + 2-stage software filter :cite[3]
Dual Power Inputs	5V@3A (primary) + 5V@1A (backup)	Automatic switchover circuit :cite[6]

ESC Protections

Protection Type	Threshold	Response Time	Trigger Condition
Hardware Overcurrent	50A per channel	≤3 seconds	MOSFET overload :cite[5]
Software Overcurrent	40A continuous	≤15 seconds	Sustained high current
Short Circuit	Hardware Isolation	<80μs	Phase-to-phase fault :cite[5]
Over-temperature	105°C (MOSFET)	<1ms	Thermal cutoff
Low Voltage Cutoff	3.0V/cell	<50ms	Battery depletion

5. Accessories Package

1x SH1.0-8pins silicone cable (7cm, reversed)
1x SH1.0-6pins silicone cable (12cm, reversed)
1x SH1.0-4pins silicone cable (12cm, reversed)
1x SH1.0-3pins silicone cable (10cm, reversed)
1x SH1.0-2pins silicone cable (12cm, single-end)
5x M3*10mm shock-absorbing balls
5x M3*8mm shock-absorbing balls
1x 1000UF 35V 10*20mm electrolytic capacitor
1x XT30-male 14AWG silicone cable (10cm length)

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II. Shipping and Delivery

ChatRobotic will arrange shipping based on the order priority and inventory situation after receiving the full payment from the customer. The estimated shipping date will be informed to the customer in the order confirmation notice. However, due to force majeure or other unforeseeable and unavoidable reasons, the shipping time may be delayed, and the company will promptly notify the customer and provide a reasonable explanation.
The company will select appropriate logistics partners for product delivery, and the delivery scope covers most regions around the world. The delivery cost will be calculated based on factors such as the customer's shipping address, the weight, and volume of the order, and will be clearly shown in the order confirmation notice. Customers can choose different delivery service levels when placing an order, such as standard delivery or expedited delivery. The corresponding delivery costs and delivery times will vary accordingly.
After the product is shipped, ChatRobotic will provide logistics tracking information to the customer so that the customer can check the transportation status of the product at any time. When receiving the product, the customer should carefully check whether the packaging of the product is intact. In case of any damage or abnormality, the customer should promptly contact the logistics company and notify ChatRobotic.