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How to Use SG90 servo motor: Examples, Pinouts, and Specs
Design with SG90 servo motor in Cirkit DesignerIntroduction
The SG90 servo motor is a compact and efficient actuator capable of precise position control. It is widely used in various applications such as radio-controlled devices, robotics, and small-scale automation projects. Its popularity stems from its affordability, reliability, and ease of use, making it an ideal choice for hobbyists and educators alike.
Explore Projects Built with SG90 servo motor
ESP8266 NodeMCU Controlled SG90 Servo Motor
This circuit connects an ESP8266 NodeMCU microcontroller to an SG90 servo motor. The NodeMCU's D4 pin controls the servo motor via PWM signal, while both the NodeMCU and servo motor share a common ground and the servo is powered directly from the NodeMCU's VIN pin. The circuit is designed to allow the microcontroller to control the position of the servo motor.
Open Project in Cirkit DesignerArduino UNO Controlled Servo Motor with Precise Angle Control
This circuit uses an Arduino UNO to control a Tower Pro SG90 servo motor. The Arduino provides power and ground to the servo, and sends control signals via digital pin D9 to rotate the servo between 90 and 180 degrees in a loop.
Open Project in Cirkit DesignerItsy Bitsy M0 Express Controlled Multi-Servo System
This circuit consists of an Itsy Bitsy M0 Express microcontroller connected to eight Tower Pro SG90 servos. Each servo is controlled by a different digital or analog output pin on the microcontroller. A single power supply provides +5V and GND to all servos, and the microcontroller is configured with some of its pins interconnected for potential programming or operational purposes.
Open Project in Cirkit DesignerArduino UNO Controlled Servo Motor Sequence
This circuit consists of an Arduino UNO microcontroller connected to a Tower Pro SG90 servo motor. The Arduino provides power (5V and GND) to the servo and controls its position via digital pin D7. The embedded code on the Arduino cycles the servo through a range of positions with delays between each movement.
Open Project in Cirkit DesignerExplore Projects Built with SG90 servo motor
ESP8266 NodeMCU Controlled SG90 Servo Motor
This circuit connects an ESP8266 NodeMCU microcontroller to an SG90 servo motor. The NodeMCU's D4 pin controls the servo motor via PWM signal, while both the NodeMCU and servo motor share a common ground and the servo is powered directly from the NodeMCU's VIN pin. The circuit is designed to allow the microcontroller to control the position of the servo motor.
Open Project in Cirkit DesignerArduino UNO Controlled Servo Motor with Precise Angle Control
This circuit uses an Arduino UNO to control a Tower Pro SG90 servo motor. The Arduino provides power and ground to the servo, and sends control signals via digital pin D9 to rotate the servo between 90 and 180 degrees in a loop.
Open Project in Cirkit DesignerItsy Bitsy M0 Express Controlled Multi-Servo System
This circuit consists of an Itsy Bitsy M0 Express microcontroller connected to eight Tower Pro SG90 servos. Each servo is controlled by a different digital or analog output pin on the microcontroller. A single power supply provides +5V and GND to all servos, and the microcontroller is configured with some of its pins interconnected for potential programming or operational purposes.
Open Project in Cirkit DesignerArduino UNO Controlled Servo Motor Sequence
This circuit consists of an Arduino UNO microcontroller connected to a Tower Pro SG90 servo motor. The Arduino provides power (5V and GND) to the servo and controls its position via digital pin D7. The embedded code on the Arduino cycles the servo through a range of positions with delays between each movement.
Open Project in Cirkit DesignerCommon Applications and Use Cases
- Radio-controlled vehicles (cars, airplanes, boats)
- Robotic arms and manipulators
- Automated doors and windows
- Camera pan/tilt systems
- Animatronics
Technical Specifications
Key Technical Details
- Voltage: 3.0V to 7.2V
- Stall Torque: 1.8 kg-cm (4.8V), 2.2 kg-cm (6.0V)
- Operating Speed: 0.12 sec/60° (4.8V), 0.10 sec/60° (6.0V)
- Temperature Range: -30°C to +60°C
- Dead Band Width: 7 µs
- Weight: 9 g
- Dimensions: 22.2 x 11.8 x 31 mm
Pin Configuration and Descriptions
| Pin Number | Color | Description |
|---|---|---|
| 1 | Brown | Ground (GND) |
| 2 | Red | Power Supply (VCC) |
| 3 | Orange | Control Signal (PWM) |
Usage Instructions
How to Use the SG90 Servo Motor in a Circuit
- Power Supply: Connect the red wire to a power source between 3.0V and 7.2V.
- Ground: Connect the brown wire to the ground of the power source and your control board.
- Control Signal: Connect the orange wire to a PWM-capable pin on your control board (e.g., an Arduino UNO).
Important Considerations and Best Practices
- Ensure that the power supply is within the specified voltage range to prevent damage.
- Do not exceed the servo's torque capabilities, as this may strip the gears.
- Use a separate power supply if the servo's current draw is too high for your control board.
- Avoid physical obstructions that may hinder the servo's movement.
Example Code for Arduino UNO
#include <Servo.h>
Servo myservo; // create servo object to control the SG90
void setup() {
myservo.attach(9); // attaches the servo on pin 9 to the servo object
}
void loop() {
myservo.write(90); // sets the servo position to 90°
delay(1000); // waits for the servo to reach the position
myservo.write(0); // sets the servo position to 0°
delay(1000); // waits for the servo to reach the position
}
Troubleshooting and FAQs
Common Issues Users Might Face
- Servo not responding: Check connections and ensure the control signal is a proper PWM signal.
- Erratic movements: Verify that the power supply is stable and within the specified voltage range.
- Noise during operation: This can be normal, but if excessive, it may indicate a mechanical issue.
Solutions and Tips for Troubleshooting
- If the servo is not moving, ensure that the PWM signal frequency is 50Hz, which is the standard for most servos.
- Use a multimeter to check for continuity and proper voltage levels in the circuit.
- In case of stripped gears, replacement gear sets for the SG90 are available and can be installed.
FAQs
Q: Can I control the SG90 servo motor with a microcontroller other than Arduino?
A: Yes, any microcontroller with PWM output capability can be used to control the SG90.
Q: What is the maximum angle the SG90 servo motor can rotate?
A: The SG90 typically has a rotation range of 180 degrees, but the actual range may vary slightly.
Q: How can I increase the torque of the SG90 servo motor?
A: Torque cannot be increased beyond the motor's specifications; however, using the servo within its optimal voltage range can ensure maximum torque performance.