The B-G431B-ESC1 Discovery kit is mainly based on the STM32G431CB microcontroller, the L6387 driver and STL180N6F7 power MOSFETs. Its breakable form includes an electronic speed controller (ESC) board and a daughterboard for user interface with embedded ST-LINK/V2-1. The ESC has a very compacted size with the goal to drive a single 3-phase brushless motor (BLDC/PMSM), performing a sensorless field oriented control (FOC) or 6-step control with speed regulation and active braking function. This unit can be connected with an external battery (LiPo type) and accepts command signal from external unit, for instance a flight control board or similar. The system provides different communication buses (UART, CAN, PWM) for driving and monitoring, and also embeds an overcurrent and thermal protection circuit. The daughterboard contains an ST-LINK in-circuit debugger and programmer, allowing the user to program and debug the STM32G431CB microcontroller directly with a USB cable using a compatible toolset. Its form factor is suitable for small and very light R/C vehicles and its motor current capability also fits big vehicle requirements, for instance a prosumer drone.
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