M5 Stack SERVO2 Module 16 Channels - 13.2 (PCS9685)

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Component Name

M5 Stack SERVO2 Module 16 Channels - 13.2 (PCA9685)

Overview

The M5 Stack SERVO2 Module is a 16-channel PWM servo driver module based on the PCA9685 chip. It is designed to provide a comprehensive solution for controlling multiple servo motors in IoT and robotics applications.

Functionality

The SERVO2 Module is capable of controlling up to 16 servo motors independently, each with its own PWM signal. The module can be easily integrated with popular microcontrollers such as Arduino, ESP32, and ESP8266 to create complex robotic systems, automated machinery, and IoT projects.

Key Features

PCA9685 Chip:

The module is built around the PCA9685 chip, a 16-channel, 12-bit PWM Fm+ I2C-bus servo driver. This chip provides a high degree of precision and flexibility in servo motor control.

16-Channel PWM Output:

The module has 16 individual PWM output channels, each capable of driving a servo motor. This allows for the control of multiple servo motors simultaneously, making it ideal for complex robotic systems.

I2C Communication:

The SERVO2 Module communicates with the microcontroller through the I2C protocol, allowing for easy integration with popular development boards.

12-Bit PWM Resolution:

The module offers 12-bit PWM resolution, providing a high degree of precision in servo motor control.

Operating Voltage:

The module operates at a voltage range of 2.3V to 5.5V, making it compatible with a wide range of microcontrollers and power supplies.

Built-in LED Indicator:

The module has a built-in LED indicator that displays the I2C communication status, providing a visual feedback during debugging and troubleshooting.

Compact Design:

The M5 Stack SERVO2 Module is designed to be compact and space-efficient, making it perfect for IoT and robotics projects where space is limited.

Easy to Use:

The module is easy to use and requires minimal setup, thanks to its simple I2C communication protocol and easy-to-use APIs.

Compatible with M5 Stack Series:

The SERVO2 Module is compatible with the M5 Stack series of development boards, providing a seamless integration experience.

Specifications

PCA9685 chip

16-channel PWM output

12-bit PWM resolution

I2C communication protocol

Operating voltage

2.3V to 5.5V

Built-in LED indicator

Compact design

Compatible with M5 Stack series

Application Areas

Robotics and automation

IoT projects

Automated machinery

CNC machines

3D printing

Drone and UAV projects

Target Audience

Robotics engineers

IoT developers

Hobbyists and makers

Students and researchers

By providing a comprehensive overview of the M5 Stack SERVO2 Module, this documentation aims to facilitate a deeper understanding of its functionality and key features, allowing users to unlock its full potential in IoT and robotics applications.

Pin Configuration

M5 Stack SERVO2 Module 16 Channels - 13.2 (PCS9685) Pinout Documentation
The M5 Stack SERVO2 Module 16 Channels - 13.2 (PCS9685) is a powerful servo motor controller module designed for IoT and robotics applications. This module is based on the PCA9685 chip, which provides 16 channels of 12-bit PWM output for precise servo motor control. Here's a detailed breakdown of each pin on the module:
Pins:
1. VIN: Input voltage pin, which should be connected to a power source (e.g., a battery or a voltage regulator) that provides a voltage between 4.5V and 13.2V. This pin is used to power the PCA9685 chip and the servo motors.
2. GND: Ground pin, which should be connected to the negative terminal of the power source or the ground plane of the development board.
3. SCL: I2C clock pin, which is used for communication between the PCA9685 chip and the microcontroller (e.g., M5 Core). This pin should be connected to the SCL pin of the microcontroller.
4. SDA: I2C data pin, which is used for communication between the PCA9685 chip and the microcontroller (e.g., M5 Core). This pin should be connected to the SDA pin of the microcontroller.
5. INT: Interrupt pin, which is an active-low output that indicates when a servo motor reaches its target position or when an error occurs. This pin can be connected to an interrupt pin on the microcontroller to handle these events.
6. VCC: Output voltage pin, which provides a regulated 5V output for powering external devices, such as sensors or other modules. This pin can be used as a power source for other components in the system.
7. CH0 ~ CH15: Servo motor output pins, which provide 16 channels of PWM output for controlling servo motors. Each pin can be connected to a servo motor, and the PCA9685 chip can control the PWM signal, frequency, and pulse width to precision-control the servo motor's position and movement.
Connection Structure:
To connect the M5 Stack SERVO2 Module 16 Channels - 13.2 (PCS9685) to a microcontroller (e.g., M5 Core) and servo motors, follow this connection structure:
Connect the VIN pin to a power source (e.g., a battery or a voltage regulator) that provides a voltage between 4.5V and 13.2V.
Connect the GND pin to the negative terminal of the power source or the ground plane of the development board.
Connect the SCL pin to the SCL pin of the microcontroller.
Connect the SDA pin to the SDA pin of the microcontroller.
Connect the INT pin to an interrupt pin on the microcontroller (optional).
Connect the VCC pin to a 5V device or module (optional).
Connect each servo motor to the corresponding channel pins (CH0 ~ CH15) on the module.
Important Notes:
Make sure to follow the recommended power supply voltage range (4.5V to 13.2V) to ensure the module's reliability and performance.
Use a capacitor (e.g., 10uF) between the VIN pin and the GND pin to filter out noise and ensure stable operation.
When connecting servo motors, ensure that the motor's power supply voltage matches the voltage provided by the VIN pin.
Consult the PCA9685 datasheet and the microcontroller's documentation for detailed information on I2C communication and servo motor control.

Code Examples

M5 Stack SERVO2 Module 16 Channels - 13.2 (PCS9685) Documentation

Overview

The M5 Stack SERVO2 Module 16 Channels - 13.2 (PCS9685) is a high-performance servo motor controller module designed for IoT and robotics applications. It features 16 channels, allowing for the control of multiple servo motors simultaneously. The module is based on the PCS9685 chip, providing a high degree of precision and reliability.

Technical Specifications

Operating Voltage: 5V
 Operating Current: 10mA (max)
 Communication Protocol: I2C
 Address Range: 0x40 - 0x7F (7-bit)
 PWM Frequency: 50Hz
 Resolution: 12-bit

Pinout

The M5 Stack SERVO2 Module has the following pins:

VCC: 5V power supply
 GND: Ground
 SCL: I2C clock
 SDA: I2C data
 INT: Interrupt output (optional)

Code Examples

Example 1: Basic Servo Control (Arduino)
```c++
#include <Wire.h>

// Define the I2C address of the SERVO2 module
#define SERVO2_ADDRESS 0x40

void setup() {
  Wire.begin();
}

void loop() {
  // Set the servo motor to channel 0
  Wire.beginTransmission(SERVO2_ADDRESS);
  Wire.write(0x00); // Channel 0
  Wire.write(0x1F); // Pulse width (0-4095)
  Wire.endTransmission();

delay(1000);

// Set the servo motor to channel 1
  Wire.beginTransmission(SERVO2_ADDRESS);
  Wire.write(0x01); // Channel 1
  Wire.write(0x3F); // Pulse width (0-4095)
  Wire.endTransmission();

delay(1000);
}
```
This example demonstrates basic servo motor control using the I2C protocol. The code sets the pulse width of the servo motor connected to channel 0 and channel 1 to different values, causing the motor to rotate to corresponding angles.

Example 2: Servo Sweep (MicroPython)
```python
import machine
import utime

# Define the I2C object
i2c = machine.I2C(scl=machine.Pin(22), sda=machine.Pin(21))

# Define the I2C address of the SERVO2 module
SERVO2_ADDRESS = 0x40

while True:
    for channel in range(16):
        for pulse_width in range(0, 4095, 50):
            i2c.writeto(SERVO2_ADDRESS, bytearray([channel, pulse_width]))
            utime.sleep_ms(10)
```
This example demonstrates a servo sweep using MicroPython. The code iterates over each of the 16 channels, setting the pulse width of the servo motor connected to each channel to a range of values, causing the motor to rotate smoothly from 0 to 180.

Note: These examples are provided as a starting point and may require modification to suit specific use cases. It is recommended to consult the datasheet and technical documentation for the PCS9685 chip and servo motors being used for more detailed information.