Digital Multimeter

Digital Multimeter provides both a CLI and Python API interface to receive data from a variety of digital multimeters.

See the list of supported multimeters here.

Features

• Command line and Python module interface to digital multimeters
• Continuous live data readings (using --count 0)
• Output in json or csv formats
• Output to console or file, allowing other tools to pickup and use the data
• Configuration via config-file or environment-variables
• Easy to expand for new digital-multimeter protocols
• Easy installation using PyPI pip
• Documentation and examples at digital-multimeter.readthedocs.io

Installation

user@computer:~$ pip install [--upgrade] digital-multimeter

CLI Usage Example

Continuously read the digital-multimeter and pipe the JSON output through jq to make the JSON output look prettier.

user@computer:~$ dmm read --connect /dev/ttyUSB0 --count 0 | jq .
{
  "reading": {
    "value": 156.70000000000002,
    "unit_name": "volts",
    "unit_symbol": "V",
    "scale": 0.001,
    "scale_name": "milli",
    "scale_symbol": "m",
    "scaled_value": 0.15670000000000003,
    "is_relative": false
  },
  "instrument": {
    "module": "MultimeterDigitechQM1538",
    "operation_mode": "voltage_dc",
    "low_battery": false,
    "is_hold": false
  },
  "time": {
    "elapsed": 0.349347334,
    "interval": 0.349347334,
    "timestamp": 1605936374.7694516,
    "unit_name": "second",
    "unit_symbol": "s"
  }
}

Python API Usage

Python-module documentation is available here.

Project

• Github - github.com/ndejong/digital-multimeter
• PyPI - pypi.python.org/pypi/digital-multimeter
• ReadTheDocs - digital-multimeter.readthedocs.io

Copyright © 2021-2023 Nicholas de Jong