Arduino Oscilloscope

This project is going to implement a simple oscilloscope using an Arduino Mega 2560. The oscilloscope samples up to 8 ADC channels and streams the data to a PC for visualization.

Features

• Timed sampling of up to 8 channels on the ADC
• Configurable sampling frequency
• Continuous sampling mode
• Buffered sampling mode with trigger conditions
• Asynchronous serial communication using UART interrupts

Components

• Arduino Mega 2560
• Whatever sensor to test the oscilloscope (simple wires are also ok)

Project Structure

• Arduino/: Contains the Arduino code for the oscilloscope.
• Linux/: Contains the PC client code for controlling the oscilloscope and visualizing the data.

Prerequisites

• linux

  sudo apt-get install arduino gnuplot make

• arch

  sudo pacman -S arduino gnuplot make

Compilation

The following command works both in main directory (arduino_oscilloscope) to compile both Arduino and Linux, and in the single directories (Linux or Arduino) to compile the single part of the project.

• Compilation only

  make build

• Clean only

  make clean

• Clean + Build + Run

  make

Running the code

• Run with default attributes:

  make run

  or just:

  make // clean + build + run

  Default attributes are:

  • device: /dev/ttyUSB0
  • baudrate: 9600
  • blocking: true

• Run with specific attributes:

  make run <device> <baudrate> [blocking]