OddityRC F405 Mini 40A Stack (AM32) - STM32F405, ICM42688P, 3-6S, 20x20mm, 5V/9V 2A BEC
OddityRC F405 Mini 40A Stack (AM32) - STM32F405, ICM42688P, 3-6S, 20x20mm, 5V/9V 2A BEC
OddityRC
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Overview
OddityRC F405 Mini 40A STACK (AM32) is a compact flight controller + 4-in-1 ESC stack designed for 20x20mm mounting and 3~6S input. The flight controller is based on STM32F405 with ICM42688P gyro, AT7456E OSD, SPL06 barometer, and 16M blackbox memory, while the ESC runs AM32 firmware and supports common PWM/Oneshot/DShot protocols.
Key Features
- Wide voltage input: 3~6S support
- Dual BEC output: 5V 2A and 9V 2A
- TVS protection: Yes
- Independent gyro power supply via dedicated LDO module
- Remote signal level switching supported (High/Low): IO1 and IO2 pin pads available for custom DIY switch control
- 32-bit ESC with AM32 firmware (adjustable frequency)
- Includes 35V 470uF solid capacitor
Specifications
Flight Controller (FC)
| MCU | STM32F405 |
| Gyro | ICM42688P |
| OSD | AT7456E |
| Barometer | SPL06 |
| Blackbox | 16M Memory |
| UARTs | 5 Set |
| ESC Signal | 8 Set |
| BEC 5V | 2A |
| BEC 9V | 2A |
| TVS Protection | Yes |
| Input Voltage | 3~6S (8S version available upon request) |
| Software | Betaflight 4.4.3 (also listed as Betaflight/inav in the provided specification) |
| Mounting | 20x20mm/M2 |
| Size | 31x30mm |
| Weight | 6.5g |
ESC (AM32)
| CURR (Current sensing) | Yes |
| Notes | No return interface, relying on flight control to collect voltage and current, speed is transmitted back via bidirectional dshot. |
| Continuous Current | 40A (also listed as 30-40A in the provided specification) |
| Peak Current | 50A (also listed as 50-60A in the provided specification) |
| Input Voltage | 3~6S (8S version available upon request) |
| Firmware | AM32 |
| Control Signal / Protocol | PWM/Oneshot/DShot 150/300/600/MultiShot |
| Mounting | 20x20mm/M2 |
| Size | 34x42mm (diagram shows 42mm x 34.5mm) |
| Weight | 7.3g |
Wiring Diagrams
- F405 FC wiring diagram provided (labels include VTX, receiver, camera, GPS, beeper, LED, ESC, BOOT)
- AM32 40A ESC wiring diagram provided
What’s Included
- F405 FC x1
- AM32 40A ESC x1
- 35V 470uF Premium Solid Capacitor x1
- M2 hex nut x8
- M2 silicone height-increasing column x8
- M2 silicone ring x4
- SH1.0mm 8-pin ribbon cable x1 (used to connect the flight controller and ESC)
- XT30 power cable x1
- XT60 power cable x1
Downloads
Firmware note: As this firmware is still in the internal testing phase, only offline firmware testing is available. The offline firmware has been updated to the latest version. Betaflight_STM32F405 Latest Version (Updated 2026.1.20): Download
F405 STACK PRESET: Download
For help selecting the right stack for a build or troubleshooting wiring/firmware, contact support@rcdrone.top or visit https://rcdrone.top/.
A compact 20×20 stack combining an STM32F405 flight controller with a 32‑bit AM32 40A 4‑in‑1 ESC for 3–6S builds.
Designed for 3–6S input and an AM32 32‑bit ESC that supports common PWM/Oneshot/DShot signal options.
Cleaner gyro power via a dedicated LDO, optional high/low signal level switching pads, plus a 35V 470µF low‑ESR capacitor in the box.
Pad layout and wiring reference for connecting VTX, receiver, camera, GPS, beeper, LEDs, and the ESC harness.
ESC connection map with motor outputs and power leads, plus board sizing to help confirm frame clearance.
Quick reference for the FC hardware: STM32F405 MCU, ICM42688P gyro, AT7456E OSD, SPL06 barometer, and 16M blackbox.
Details
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