T-Motor Pacer G4 Alpha Flight Controller (Analog/HD)

The T-Motor Pacer G4 Alpha is a high-performance 30.5x30.5mm flight controller built around the next-generation STM32G4 processor, delivering rapid processing speeds and future-proof compatibility for 5-inch freestyle and racing quads. By leveraging the G4 architecture, this flight controller handles complex filtering and high loop rates with minimal CPU load. It is available in two purpose-built variants: an Analog version equipped with an onboard AT7456E OSD chip, and a streamlined HD version designed for plug-and-play integration with digital systems like the DJI O3, Walksnail Avatar, and HDZero.

Key features

• Powered by the STM32G473 processor for overhead-free performance and faster loop times compared to legacy F4 boards.

• Low-noise ICM42688P gyroscope ensures crisp, locked-in flight dynamics and accurate PID tracking.

• Available in a dedicated Analog board (with onboard OSD) or a streamlined HD board tailored for digital video transmitters.

• Industry-standard 30.5x30.5mm mounting pattern fits the vast majority of 5-inch to 7-inch frames.

Specifications

• MCU: STM32G473

• Gyro: ICM42688P

• Input Voltage: 3-6S LiPo

• Mounting Size: 30.5x30.5 mm

• ESC protocol: up to DShot2400

• Firmware: T-Motor Alpha firmware

• HD version: plug-and-play with the DJI O3 Air Unit, no soldering

Ensure you select the variant that matches your video system before checkout. The HD version omits the analog OSD chip to optimise board space and reduce weight, making it natively incompatible with traditional analog cameras and VTXs.