Overview
The Holybro Kakute H7 v1.5 Flight Controller is a high-performance, feature-packed flight controller designed for professional FPV pilots and UAV developers. Powered by the STM32H743 processor running at 480MHz, it offers exceptional computational power, an integrated Bluetooth module (ESP32-C3), and support for up to 8S input voltage. Compatible with Betaflight 4.5.2+, ArduPilot, and INAV, it delivers unmatched flexibility across a range of flight platforms including quadcopters, octocopters, and CineLifters.
The updated v1.5 version replaces the MPU6000 with the ICM-42688-P IMU, fully supported in Betaflight 4.5.2 and later.
Key Features
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High-Speed Processor: STM32H743 MCU @ 480MHz — over 2x faster than F7 boards
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IMU: ICM-42688-P (SPI interface) with improved accuracy and stability
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Barometer: SPA06, ideal for autonomous navigation
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Bluetooth: Built-in ESP32-C3 chip for wireless configuration via SpeedyBee app (iOS & Android)
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OSD: AT7456E chip for graphical overlay of battery, RSSI, flight mode, and more
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Blackbox: Full-sized microSD card slot supports unlimited flight log storage
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HD-Ready: Plug-and-play port for DJI/Caddx Vista/Air Unit — no external BEC required
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ESC Connectivity: Dual JST-SH 8-pin ports for x4 or x8 motor configurations
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Analog VTX Support: Dedicated 6-pin port for traditional FPV systems
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I2C & UART Ports: 6x UARTs and SDA/SCL for GPS, compass, and telemetry
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LED & Buzzer: RGB LED and buzzer pad for easy integration
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Voltage Regulation: Onboard 9V/3A & 5V/2A BECs for clean, stable power
Technical Specifications
| Parameter | Value |
|---|---|
| MCU | STM32H743 32-bit, 480MHz |
| IMU | ICM-42688-P (v1.5); MPU6000 (legacy) |
| Barometer | SPA06 (v1.5); BMP280 (legacy) |
| Bluetooth | ESP32-C3, Betaflight-enabled wireless tuning via SpeedyBee |
| UARTs | 6 UARTs: UART1,2,3,4,6,7 (UART2 for Bluetooth telemetry) |
| ESC Ports | 2x JST-SH1.0 8-pin (Dual 4in1 ESC plug-and-play, x8 Octo support) |
| VTX Port | 1x JST-SH1.0 6-pin for HD FPV (DJI/Caddx) |
| Input Voltage | 3S–8S LiPo |
| BEC Output | 9V/3A, 5V/2A (continuous) |
| On-Screen Display | AT7456E OSD |
| Blackbox | MicroSD Card Slot (supports SD/SDHC cards) |
| Mounting | 30.5x30.5mm (M3), Φ4mm hole with Φ3mm silicone grommets |
| Dimensions | 37 x 37 x 7.7mm |
| Weight | 8g |
| USB Port | Type-C |
Default UART Configuration
| UART | Function |
|---|---|
| UART1 | DJI VTX (MSP On) |
| UART2 | Bluetooth (MSP On) |
| UART3 | Spare/VTX |
| UART4 | Spare/GPS |
| UART6 | Receiver/SBUS (Serial Rx On) |
| UART7 | ESC Telemetry |
Firmware Compatibility
| Firmware | Version Requirement |
|---|---|
| Betaflight | 4.5.2 and newer |
| INAV | 4.0.0+ (SD card in 4.1.0) |
| ArduPilot | 4.2.0 and newer |
| PX4 | v1.13 and newer |
Wiring Compatibility
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Supports DJI/Caddx HD Digital FPV System
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Compatible with SBUS, CRSF, F.Port, DSM, SRXL2 receivers
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Easy installation of GPS, analog VTX, LED, buzzer, and camera
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Ideal for Octocopter (x8) setups with 2x 4-in-1 ESCs (Amperage scale adjustment needed in BF)
What's Included
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1x Holybro Kakute H7 v1.5 Flight Controller
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4x M3 Silicone Grommets
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2x JST-SH1.0 8-pin 150mm Cables (ESC)
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2x JST-SH1.0 6-pin 80mm & 150mm Cables (DJI Air Unit)
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1x JST-SH1.0 6-pin Colored 150mm Cable (Caddx HD/Analog VTX)

Holybro Kakute H7 v1.5 Flight Controller includes STM32H7 MCU, 8 motor outputs, Bluetooth, I2C port, UARTs, LED/buzzer, on-screen display, blackbox logging, DJI/Caddx HD connector, and supports 3S-8S input voltage.

Setup guide for Holybro Kakute H7 v1.5 with DJI/Caddx FPV: covers receiver, video transmitter, GPS, buzzer/LED, analog camera, ESCs, wiring diagrams, and configuration steps.
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