KISS ULTRA V3 Flight Controller — Elite Performance, Zero Nonsense

The KISS ULTRA v3 Flight Controller unleashes the full potential of your FPV build. This premium standalone FC engineered for pilots who demand precision, simplicity, and raw performance.

Designed around the iconic KISS philosophy (“Keep It Super Simple”), the ULTRA V3 delivers pro-level hardware in a clean 30.5×30.5mm H-form layout. Perfect for modern 5″ freestyle and racing rigs.

At its heart sits a powerful STM32H743 processor, paired with a high-precision IIM-42652 gyro and integrated BMP390 barometer. The result? Ultra-responsive stick feel, crisp cornering, and rock-solid stability in the harshest of manoeuvre’s.
KISS firmware keeps tuning straightforward and intuitive, with smart filtering that maintains low CPU load while delivering that signature smooth flight feel. Less time in configurator. More time in the air.

Product Highlights

• High-speed STM32H743 MCU for next-level processing
• Precision IIM-42652 gyro for locked-in flight
• Integrated BMP390 barometer for advanced features
• Native USB-C connection for quick setup
• 30.5×30.5mm mounting (H-form)
• Integrated graphical OSD with telemetry support
• Compatible with analogue and digital HD systems (DJI, Walksnail, HDZero)
• Multiple UARTs for receivers, GPS, VTX control and more

Whether you’re chasing podiums, sending massive freestyle lines, or building a premium 6S or 8S setup, the KISS ULTRA V3 delivers the clean, connected flight feel that serious pilots expect.

Product Information

• Iconic KISS “H” form factor 30.5×30.5mm mounting (With permission of Flyduino)
• STM32H743 processor 480 MHz, 2MB FLASH, 1.28MB RAM
•  IIM-42652 gyro, SPI
•  BMP390 barometer
• 8 pin ESC connector, backward compatible with KISS (!!!not with FETTEC!!!). Includes current sensor pin.
• Extra solder pads for motors 5-8
•  2 serial ports on 6 pin connectors (SER1 / SER3), KISS compatible
•  Overcurrent protection on all data lines
•  ESD protection on USB
•  5v/12v becs (2A) with separate power on lipo and on usb. 8s capable. (first batch has 12.8v regulator).
•  Dedicated current sensor pad
•  Finally USB-C 🙂
•  Better cable harness

Software improvements

• Firmware is based on LATEST version from PATREON
• New STM32 H7 bootloader, VCP driver
• One HEX to rule them all… ??
•  Smart config storage… NEVER loose your configuration…
• Optimized hardware interface layer code
• Optimized adaptive filter code (CPU load is about 8% fully loaded!!!)
• Added BLHELI Passthrough
• IRC Ghost support
• TBS CSRFv3 support (ultra code)
• Improved RTH with BARO support
• KISS Weather Station (its fun)
• NO soft serial ports anymore!
• 7 serial ports exposed (dedicated serials for SA and RC telemetry)
• Camera control (analogue, real DAC)
•  UBX protocol GPS support
• Battery capacity/alerts
• DSHOT router (free routing between software and hardware channels)
•  Up to 8 motors support with DSHOT2400/1wire
• Full support of all HD systems (DJI MSP, DJI WTF, DJI O3, Walksnail, HD0)

OSD features

•  Integrated Graphical OSD
•  No OSD firmware update required
•  Configurable Black and White levels, transparency
•  FULL KISS configuration from OSD
•  ESC configuration
•  No serial port required, 50fps refresh rate
•  Battery cell voltage sensor
•  Crossfire tools
•  AM32 setup tools
•  Hardware test tools (rc test, gps test, video test, motor test etc)

 

GUI improvements

•  Forked GUI code (With permission of Flyduino)
•  Design facelift, code cleanup.
•  Removed odd things like pentacopters, cars and other noise.
•  Web GUI without installation available at https://kiss-ultra.com/
•  OSD Mirror https://youtu.be/aUqtCTAt8ik
•  Native support of Apple Silicon

Helpful Abbreviations

• KISS – Keep It Super Simple
• FCFC – Fedor Commander Flight Controller

In the box:

• KISS ULTRA v3 Flight Controller
• 8-8 cable
• 8-6 cable (legacy)

More Information

• https://kiss-ultra.com/
• https://kiss-ultra.com