Servos, ESCs, and BECs are among the main electronic components used in radio control systems. They work together with the receiver, battery, and motor to convert commands sent by the transmitter into movement and power control in the model.
Alex Baroni creates content about these components by combining electronics fundamentals, installation, configuration, testing, and practical applications in model aircraft, RC cars, RC boats, and other radio-controlled systems.
Servos and Servomotors in Radio Control Systems
Servos convert signals received from the receiver into mechanical movement. Torque, speed, supply voltage, neutral position, and travel are important characteristics when selecting, installing, and testing a servo in a model.
Servos in practice: How to Use a Servo Tester: An Essential Tool for the Model Builder’s Workbench — learn how to test RC servos, check their movement, and find the neutral position using a servo tester without relying on the transmitter and receiver.
ESCs and Electronic Speed Control
An ESC controls the power supplied to the motor according to the commands received from the radio control system. Its selection and configuration must consider the type of motor, current, battery voltage, and characteristics of the application.
ESCs in practice: What Is an ESC? Understanding Electronic Speed Control in RC Models — understand what an ESC is, what it does, and how this component controls the speed of brushed and brushless motors in different radio-controlled models.
BECs and Power for Receivers and Servos
A BEC provides the voltage required to power the receiver, servos, and other devices in the RC system. Understanding its function helps prevent power supply problems, voltage drops, and improper component operation.
BECs in practice: What Is a BEC in Radio Control Systems? Understanding Its Purpose and How It Powers Receivers and Servos — understand the role of a BEC in an RC system and how it supplies the appropriate voltage to the receiver and servos from the battery used in the model.
Connecting the Receiver, Servo, ESC, and BEC
Correctly connecting the receiver, servos, ESC, BEC, battery, and motor is essential for the model to operate properly. Identifying the power, ground, and signal connections makes both assembly and troubleshooting easier.
RC system connections in practice: How to Connect a Servo, ESC, BEC, Battery, and Receiver — learn how to correctly connect a servo, ESC, BEC, battery, and receiver, and understand the role of the power, ground, and signal connections in a radio control system.
Configuring and Testing RC Components
Before being installed in a model, servos and electronic controllers can be configured and tested individually. These procedures help verify the neutral position, travel, direction of movement, motor response, and equipment operation.
ESC configuration in practice: How to Configure the S10E-RTR Brushed ESC for LiPo, NiMH, and Motor Reversing — learn how to configure an S10E-RTR electronic speed controller for different battery types and operation with motor reversing.
Troubleshooting and RC System Operation
Problems with servos, ESCs, BECs, or the power supply can affect the entire radio control system. Measurements and tests help identify faults and explain how the components work together.
RC system troubleshooting in practice: How Much Current Does a Receiver Draw with Three Servos and a Motor Connected to the ESC? — follow a practical measurement of the power consumption of a receiver, servos, and ESC, and understand how current, power supply, and load help evaluate the combined operation of the components in an RC system.
This content is part of Alex Baroni’s Model Building and Radio Control section, which features content about RC systems, electronics applied to model building, construction, configuration, testing, and the development of radio-controlled models.