Oscilloscope

Tool for analyzing voltage levels over time using Arduino on USB serial port.

Consists of command line tool written in Python and code for Arduino.

Project

Oscilloscope project is hosted on Github.

Requirements

hardware

• Arduino Duemilanove w/ ATmega328 or compatible platform
• USB cable
• PC

software

• Python 2 (tested with 2.7)
• PySerial module
• (optional) gnuplot

Usage

Warning: Never exceed maximal input voltage of your Arduino's input pins which could be either 3.3V or 5V. Always make sure the voltage you are measuring is not above the allowed voltage on the analog input pins! Also make sure the two circuits (Arduino and the measured circuit) have a common ground.

• connect Arduino to PC with serial cable

• (only first time) flash the sketch from Oscilloscope directory

• connect probed signal to analog pin 0 on Arduino

• run oscilloscope.py with command line arguments (use -h for help), e.g.:

   ./oscilloscope.py -d /dev/ttyUSB0
  

• or run gnuplot_scope.sh with the same arguments to pipe the data directly to gnuplot

License

Copyright 2013 Michal Belica < devel at beli sk >

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see http://www.gnu.org/licenses/ .

You find a copy of the GNU General Public License in file LICENSE distributed with the software.