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30A Mini ESC 4 in 1 AT32F421K8U7 20x20

FPV Electronics > ESC (Electronic Speed Controllers)

$25.90
$35.90
The 30A F421 Mini ESC AT32F421K8U7 is a compact electronic speed controller designed for high-performance RC models and small-scale robotics.
SKU: CRP00863-30A
Package weight: 0.10 KG
Pkg. Size: 85MM*61MM*25MM
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F421 Mini ESC AT32F421K8U7 20x20 Technical Brief

Descriptions

The F421 Mini ESC is a compact electronic speed controller designed for high-performance RC models and small-scale robotics. Built around the AT32F421 microcontroller (ARM Cortex-M4 @ 120MHz), it delivers precise motor control with adaptive torque management, ideal for crawlers, drones, and industrial micro-machines requiring dynamic power regulation.

1. Main Specifications

ComponentDetails
ProcessorAT32F421 (Cortex-M4 @ 120MHz, FPU)
Memory64KB SRAM + 256KB Flash
Input Voltage2S-8S LiPo (7.4V-25.2V)
Continuous Current30A (Peak 80A for 10s)
BEC Output5V@3A (Switch-mode)
PWM Frequency8kHz-32kHz (Adjustable)
Dimensions30×20mm (20×20mm mounting)
Weight6.5g

2. Key Features

  • • Hybrid Drive: Sine+Square wave modulation for torque efficiency and smooth low-speed control

  • • High-Speed ADC: 2Msps sampling enables real-time current/temperature monitoring

  • • Adaptive Overcurrent Protection: Built-in comparator with <1μs response time

  • • Dual Telemetry: Supports DShot600 and Analog RPM feedback

  • • Base Firmware：AM32_  K _A_F421.hex

🚁 Micro Drones:

  • • 32kHz PWM mode for ultra-low latency

🤖 Robotics:

  • • Precision servo-like control for robotic arms

⚙️ Industrial Tools:

  • • High-efficiency drives for CNC spindles

3. Accessories Package

  • • 1x 1000UF 35V 10*20mm electrolytic capacitor

  • • 1x XT30-male 14AWG silicone cable 10cm length

  • • 1x SH1.0-8pins silicone cable (7cm, reversed)

  • • 5x M3*8mm shock-absorbing balls

4. Connection Diagram

F421miniesc1.pngF421miniesc2.png

 

Frequently Asked Questions

What VESC current rating do I need for my motor?
Choose by your motor’s phase-current demand and application. 200A–500A VESC controllers suit ebikes, scooters and light robotics; 1000A-class units power high-performance eskate, EUCs and small EVs; 2000A controllers target electric motorcycles and industrial drives. Always leave headroom above your battery’s fully-charged voltage.
Do you offer OEM/ODM customization for VESC controllers?
Yes. ChatRobotic is an ISO 9001 and ISO 14001 certified manufacturer providing OEM/ODM VESC controllers, custom firmware, enclosure design and PCB assembly for 200A–2000A applications. Contact our engineering team with your specs to start a custom build.
How long is the lead time and which shipping methods do you use?
In-stock VESC controllers are shipped via DHL/FedEx after payment is received. Delivery time depends on the shipping method: DHL/FedEx priority express 3–5 business days, economy express 4–6 business days, registered post 8–20 business days, worldwide. OEM/ODM and bulk orders are scheduled by customization scope. Logistics tracking is provided after shipment.
Are these VESC controllers compatible with sensored and sensorless motors?
Yes. ChatRobotic VESC controllers support both sensored (hall-sensor) and sensorless BLDC/PMSM motors and work with a wide battery range. FOC, regen braking, throttle curves and telemetry are fully configurable through VESC Tool.