Jetson and Arduino Integration Guide

1. Basic Concepts of Jetson and Arduino

Jetson

Jetson is a series of embedded computing boards developed by NVIDIA, designed for AI applications and edge computing. It excels at handling tasks such as image recognition, object detection, and real-time data processing, making it ideal for projects requiring high-performance computing on the edge.

Arduino

Arduino is an open-source electronics platform known for its simplicity and versatility in building prototypes and small-scale embedded systems. It is often used for controlling sensors, actuators, and other hardware components in IoT and robotics projects.

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2. Jetson and Arduino Communication and Integration

Hardware Communication

Jetson and Arduino can be connected through standard interfaces like I2C, UART, and SPI. These connections enable data exchange between the two devices for efficient control and monitoring. For example, you can connect sensors to Arduino and transmit the sensor data to Jetson for further processing.

Software Communication

Programming languages like Python and C++ are commonly used to establish communication. For instance, serial communication via USB allows Jetson to send commands to Arduino and receive sensor data back from it. Examples include:

• Using Python's pyserial library for serial communication.
• Implementing UART protocols to exchange data in real-time.

Example Use Case: Sensor Integration

By connecting sensors such as temperature, humidity, or ultrasonic sensors to Arduino, the data can be collected and transmitted to Jetson for advanced analytics. Jetson can then process the sensor data using AI models or make real-time decisions, such as triggering an alert or controlling an actuator.

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3. Jetson and Arduino Integration Project: CO2 Measurement Using CM1106 Sensor

This project showcases the integration of Arduino with a CM1106 CO2 sensor to measure carbon dioxide (CO2) levels. The data collected from the sensor can be transmitted to a Jetson device for further analysis, real-time monitoring, and visualization. This setup is ideal for environmental monitoring, indoor air quality assessment, and industrial applications.

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Overview

Objectives

• Measure carbon dioxide (CO2) levels using the CM1106 sensor.
• Establish seamless communication between the CM1106 sensor and Arduino using the I2C protocol.
• Transmit CO2 measurement data to Jetson for additional processing and visualization.

Key Components

• Arduino Board: Serves as the main controller for the CM1106 sensor.

• CM1106 CO2 Sensor: A high-precision sensor for measuring CO2 concentrations.

• Dedicated Sensor Shield: Simplifies the connection between Arduino and the CM1106 sensor.

• Jetson Nano/Xavier: Processes and visualizes data received from Arduino.

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Hardware Setup

Required Components

• CM1106 CO2 Sensor
• Arduino Board (e.g., Arduino Uno, Nano)
• Dedicated Sensor Shield for CM1106
• USB cable for Arduino-Jetson or PC connection

Circuit Diagram and Shield

This project uses a dedicated shield specifically designed for the CM1106 sensor. The shield allows direct connection to Arduino without needing additional components like breadboards.

Features of the Shield:

• I2C Pinout:
  • SDA: Data transfer pin.
  • SCL: Clock signal pin.
  • VCC and GND: Power supply pins.
• Sensor Socket: A slot for securely mounting the CM1106 sensor.
• Simplified Wiring: Automatically connects the sensor to Arduino's I2C pins for communication.

Jetson Integration

• Connect the Arduino to Jetson via USB for serial communication.
• Process data received from Arduino using Python or other programming tools for visualization and analysis.

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Software Setup

Arduino Code

Below is the Arduino code used to interface with the CM1106 sensor, read CO2 levels, and transmit the data.

// Code to read CO2 levels from the CM1106 sensor

#include <cm1106_i2c.h> // Library for CM1106 CO2 Sensor

// Initialize the CM1106 I2C object
CM1106_I2C cm1106_i2c;

void setup() {
    // Start I2C communication with the sensor
    cm1106_i2c.begin();
    
    // Start serial communication for data output
    Serial.begin(9600);
    
    // Wait for the sensor to stabilize
    delay(5000);
}

void loop() {
    // Measure CO2 levels
    uint8_t ret = cm1106_i2c.measure_result();

    if (ret == 0) {
        // Successfully read CO2 data
        Serial.print("CO2: ");
        Serial.println(cm1106_i2c.co2); // Print CO2 concentration
    } else {
        // Failed to read data
        Serial.println("Error reading sensor data.");
    }
    
    // Wait 5 seconds before the next reading
    delay(5000);
}

*** Click the link below to view the experiments conducted using the Arduino code and their results! ***

-> https://github.com/hoohsh/jetson_arduino/blob/main/arduino_experiment.md