SpeedyBee F405 V4
Series: SpeedyBee Flight controllers for FPV and small drones
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
The SpeedyBee F405 V4 (China) is an FPV flight controller in 30x30 format with an ICM42688P gyro, barometer and configuration via a Bluetooth app. The manufacturer lists the F405 V4 stack it belongs to as discontinued. It supports Betaflight and INAV.
The processor is an STM32F405, in the F4 class, which according to the part description is enough for many FPV uses. The ICM42688P supplies rotation rates with low noise, and a barometer adds altitude. Interfaces are 6 UART, of which UART4 is taken by Bluetooth and UART5 by ESC telemetry, plus an AT7456E OSD. The input voltage is 3S to 6S LiPo. The board measures 41.6 × 39.4 × 7.8 mm with a hole pattern of 30.5 × 30.5 mm and weighs 10.5 g.
In the EU the class follows from the finished drone: C0 below 250 g, C1 below 900 g with Direct Remote ID. Anyone flying with goggles needs an observer in the open category.
When selecting, mind the situation: the product is listed as discontinued, and a successor is the F405 V5, which has an isolated power supply for the gyro. With stock boards the configuration is saved before Betaflight is updated. The occupied UARTs leave fewer free ports for GPS or further devices. Wear shows at the USB socket and solder pads; propeller damage raises gyro noise, and after modifications the attitude is calibrated.
Technical data
Other data
| Dimensions (mm) | 41, 6x39, 4x7, 8 (Lochbild 30, 5x30, 5)correct |
|---|---|
| IMU types | ICM42688Pcorrect |
| Input voltage (V) | 3S-6S LiPocorrect |
| Interfaces | 6 UART (UART4 Bluetooth, UART5 ESC-Telemetrie), AT7456E-OSDcorrect |
| Number of IMUs | 1correct |
| Number of barometers | 1correct |
| Processor | STM32F405correct |
| Supported firmware | ['Betaflight', 'INAV']correct |
| Weight (g) | 10.5correct |
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 9 individual figures for this model. What we cannot document is not here — we leave gaps open rather than estimate them.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
