The FlyFishRC F405 stack pairs a full-size 30.5×30.5mm F4 flight controller with a 100A continuous 4-in-1 ESC, covering the whole power and control side of a build in one purchase. The ESC accepts 2–8S (7–36V) and is rated 100A continuous / 110A peak, which puts high-KV 6S 5-inch racing setups and 7-inch long-range builds inside its envelope rather than at its edge.
Key benefits
One stack instead of separately sourced FC and ESC — matched mounting, matched connector, no wiring guesswork.
100A continuous headroom means the ESC is not the limiting part in aggressive 6S builds.
Two independent BEC rails (5V/3A, 12V/3A) power a flight controller, receiver, camera and VTX without add-on regulators.
ICM-42688 gyro — a low-noise part that tolerates frame vibration better than older 6000-series gyros.
16MB blackbox flash for tuning and crash diagnostics.
Recommended uses
5" and 6" freestyle · 6S racing · 7" long-range builds · any build running a DJI O3 or O4 Air Unit.
Key features
MCU STM32F405RGT6 @ 168MHz, Betaflight firmware
ICM-42688 gyro, AT7456E analog OSD
6 UARTs (USB shares UART2)
CRSF / SBUS / IBUS / DSM receiver protocols
DShot150 / 300 / 600 and PWM on the ESC
Current sensor pad, I2C pad, buzzer and LED pads, TVS input protection
Standard 30.5×30.5mm M3 mounting on both boards
Before you buy
This is a 2–8S stack. Do not run it on a battery above 8S.
The ESC ships with an XT90 lead. If your build uses XT60, plan for an adapter or a re-solder.
Solder the supplied capacitors across the ESC input — they are not optional on a 100A 6S build.
Analog OSD only. If you fly DJI or Walksnail digital, OSD comes from the air unit, not from this FC.
