Electronic Speed Controller (ESC) plays a vital role in managing the motor speed of an FPV drone. Its primary function is to receive throttle    signals from the flight controller and regulate the brushless motor to operate at the desired speed. Opting for high-quality ESCs contributes to a reliable and smooth flight experience, although it’s important to note that various factors collectively influence overall performance.

ESCs are integral to drone functionality, tasked with governing the variable speed of motors. They operate on direct current (DC) supplied by the LiPo battery, translating motor signals from the flight controller into three-phase alternating current to power the motor.

They come in two main types: Singles and 4-in-1s. Singles are individual ESC units attached to the length of each arm and soldered to a Power Distribution Board (PDB) at the flight stack’s base. They are commonly used on freestyle quads due to their increased weight and layout requirements. Although singles are robust and easy to replace individually, the 4-in-1 ESCs have become popular for both racing and freestyle quads. The 4-in-1 ESC is a compact solution that requires fewer solder joints, less planning to wire up, and is often sold with a matching Flight Controller, ensuring compatibility. The drawback is that if one ESC fails, you need to disassemble the entire flight stack and replace the entire board, as all the ESCs are integrated into one unit.