Various sensors, such as temperature, humidity, pressure, and light sensors, can be connected to the BUS Module, enabling the collection of environmental and physical data.
Various sensors, such as temperature, humidity, pressure, and light sensors, can be connected to the BUS Module, enabling the collection of environmental and physical data.
The module supports the connection of peripherals like displays, keyboards, and motor drivers, allowing for user interaction and control of external devices.
The BUS Module can be used to connect and stack other M5 Stack modules, such as Wi-Fi, Bluetooth, or GPS modules, to expand the system's capabilities.
Key Features
I2C (x2)
UART (x2)
SPI
I2S
GPIO (x10)
ADC (x2)
DAC
Power input (VIN, 5V, 3.3V)
Applications
| The M5 Stack BUS Module is suitable for a wide range of IoT and robotic applications, including |
Environmental monitoring systems
Home automation systems
Robotics and robotic arms
Industrial automation systems
Wearable devices
Smart home devices
Conclusion
The M5 Stack BUS Module is a versatile and powerful component that provides a centralized and organized way to connect and manage peripherals, sensors, and modules in an IoT system. Its modular design, multiple interface options, and power management features make it an ideal choice for a wide range of applications.
M5 Stack BUS Module DocumentationOverviewThe M5 Stack BUS Module is a versatile expansion board designed for the M5 Stack series of microcontrollers. It provides a convenient way to connect and communicate with various peripherals, such as sensors, actuators, and displays, using standardized bus protocols like I2C, UART, and SPI.FeaturesCompatible with M5 Stack microcontrollers
Multiple bus interfaces: I2C, UART, and SPI
Supports 3.3V and 5V logic levels
Onboard voltage regulator for powering peripherals
Breadboard-friendly design for easy prototypingCode Examples### Example 1: I2C Communication with a SensorIn this example, we'll demonstrate how to use the M5 Stack BUS Module to communicate with an I2C-based temperature sensor (e.g., DS18B20).Hardware ConnectionsM5 Stack microcontroller (e.g., M5GO or M5StickC)
M5 Stack BUS Module
DS18B20 temperature sensorCode
```c
#include <M5Stack.h>
#include <Wire.h>#define DS18B20_ADDRESS 0x48 // I2C address of the DS18B20 sensorvoid setup() {
M5.begin(); // Initialize M5 Stack
Wire.begin(); // Initialize I2C bus
}void loop() {
byte data[2];
Wire.beginTransmission(DS18B20_ADDRESS);
Wire.write(0x00); // Select temperature register
Wire.endTransmission();
Wire.requestFrom(DS18B20_ADDRESS, 2);
data[0] = Wire.read();
data[1] = Wire.read();
float temperature = (data[0] << 8) | data[1];
Serial.printf("Temperature: %.2fC
", temperature / 16.0);
delay(1000);
}
```
This code initializes the I2C bus, sends a request to the DS18B20 sensor to read the temperature register, and then receives the data via the I2C bus. The temperature value is then printed to the serial monitor.### Example 2: UART Communication with a Serial DisplayIn this example, we'll demonstrate how to use the M5 Stack BUS Module to communicate with a UART-based serial display (e.g., LCD1602).Hardware ConnectionsM5 Stack microcontroller (e.g., M5GO or M5StickC)
M5 Stack BUS Module
LCD1602 serial displayCode
```c
#include <M5Stack.h>
#include <SoftwareSerial.h>#define DISPLAY_BAUDRATE 9600
#define DISPLAY_RX_PIN 16
#define DISPLAY_TX_PIN 17SoftwareSerial displaySerial(DISPLAY_RX_PIN, DISPLAY_TX_PIN);void setup() {
M5.begin(); // Initialize M5 Stack
displaySerial.begin(DISPLAY_BAUDRATE);
}void loop() {
displaySerial.print("Hello, World!");
displaySerial.println();
delay(1000);
}
```
This code initializes the UART interface on the M5 Stack BUS Module, sets the baud rate to 9600, and uses the SoftwareSerial library to communicate with the LCD1602 display. The example code sends the string "Hello, World!" to the display, followed by a newline character.These examples demonstrate the versatility of the M5 Stack BUS Module and its ability to communicate with various peripherals using standardized bus protocols.