The SERVO ST3020, manufactured by Waveshare, is a high-performance servo motor designed for precise control in robotics and automation applications. Its compact design, high torque output, and built-in feedback system make it ideal for tasks requiring accurate positioning and smooth motion. This servo motor is widely used in robotic arms, RC vehicles, drones, and industrial automation systems.
This circuit controls multiple high-torque bus servos using a bus servo adaptor, which is powered by a 6-channel power module. The servos receive their control signals and power through the adaptor, enabling synchronized movement for applications requiring precise and powerful actuation.
Open Project in Cirkit Designer
This circuit is a servo control system powered by a 4 x AAA battery pack, regulated by a step-down DC regulator. An ESP32-S3 microcontroller controls five servos and communicates with a gForceJoint UART sensor, enabling precise servo movements based on sensor inputs.
Open Project in Cirkit Designer
This circuit is designed to control servos and read inputs from IR sensors using an ESP32 Devkit V1 microcontroller. It features a step-down converter for voltage regulation, an I2C LCD for display purposes, and a red LED as an indicator. The system is likely used for automation tasks that require object detection and actuator control.
Open Project in Cirkit Designer
This circuit is designed to control five servos using an ESP32-S3 microcontroller, powered by a 4 x AAA battery pack through a step-down regulator. The ESP32-S3 also interfaces with a gForceJoint UART 111 sensor for additional input.
Open Project in Cirkit DesignerThe SERVO ST3020 is engineered for reliability and performance. Below are its key technical details:
| Parameter | Value |
|---|---|
| Operating Voltage | 4.8V to 6.0V |
| Stall Torque | 20 kg·cm @ 6.0V |
| Operating Speed | 0.16 sec/60° @ 6.0V |
| Control Signal | PWM (Pulse Width Modulation) |
| PWM Pulse Range | 500 µs to 2500 µs |
| Angle Range | 0° to 180° |
| Gear Material | Metal |
| Motor Type | Coreless |
| Dimensions | 40.5 x 20 x 38 mm |
| Weight | 60 g |
The SERVO ST3020 has a standard 3-pin connector for interfacing with control systems. The pinout is as follows:
| Pin | Wire Color | Function |
|---|---|---|
| 1 | Brown | Ground (GND) |
| 2 | Red | Power Supply (VCC) |
| 3 | Orange | Signal (PWM Input) |
The SERVO ST3020 can be easily controlled using an Arduino UNO. Below is an example code snippet to rotate the servo to specific angles:
#include <Servo.h> // Include the Servo library
Servo myServo; // Create a Servo object
void setup() {
myServo.attach(9); // Attach the servo to pin 9 on the Arduino
}
void loop() {
myServo.write(0); // Move the servo to 0 degrees
delay(1000); // Wait for 1 second
myServo.write(90); // Move the servo to 90 degrees
delay(1000); // Wait for 1 second
myServo.write(180); // Move the servo to 180 degrees
delay(1000); // Wait for 1 second
}
Servo Not Moving
Servo Jittering
Overheating
Limited Range of Motion
Q: Can I power the SERVO ST3020 directly from the Arduino UNO?
A: It is not recommended. The Arduino's 5V pin cannot supply enough current for the servo, especially under load. Use an external power source.
Q: What happens if I exceed the servo's torque rating?
A: Exceeding the torque rating can cause the servo to overheat, reduce its lifespan, or result in mechanical failure.
Q: Can I use the SERVO ST3020 for continuous rotation?
A: No, the SERVO ST3020 is designed for positional control within a 0° to 180° range. For continuous rotation, use a servo specifically designed for that purpose.
Q: How do I extend the servo's lifespan?
A: Operate the servo within its specified voltage, torque, and temperature limits. Avoid prolonged operation at stall torque and ensure proper cooling.