midas

Python driver for Honeywell Midas gas detectors.

Installation

uv pip install midas

Usage

Command Line

To test your connection and stream real-time data, use the command-line interface. You can read the state with:

$ midas 192.168.1.100

This will output a JSON object which can be further manipulated. See below for object structure.

Python

For more complex behavior, you can write a python script. This solely uses Python ≥3.5's async/await syntax.

import asyncio
from midas import GasDetector

async def get():
    async with GasDetector('192.168.1.100') as detector:
        print(await detector.get())

asyncio.run(get())

If the detector is operating at that address, this should output a dictionary of the form:

{
  'alarm': 'none',             # Can be 'none', 'low', or 'high'
  'concentration': 0.0,        # Current gas concentration reading
  'connected': True,           # Monitors heartbeat for connection
  'fault': {                   # Fault data, when applicable
    'code': 'F39',
    'condition': 'User has generated a simulated fault.',
    'description': 'Simulated fault',
    'recovery': 'Reset simulated fault.',
    'status': 'Instrument fault'
  },
  'flow': 514,                 # Flow rate, in cc / minute
  'high-alarm threshold': 2.0, # Threshold concentration for high alarm trigger
  'ip': '192.168.1.192',       # IP address of connection, can be used to link to Honeywell's own web interface
  'life': 538.95,              # Days until cartridge replacement required
  'low-alarm threshold': 1.0,  # Threshold concentration for low alarm trigger
  'state': 'Monitoring',       # Can be any option in `gas_detector.monitoring_status_options`
  'temperature': 26,           # Detector temperature, in celsius
  'units': 'ppm'               # Units for concentration values
}

Additionally, there are four commands which can be sent to the device

Clear all alarms and faults - detector.clear_alarms_and_faults()
Inhibit alarms - detector.inhibit_alarms()
Inhibit alarms and faults - detector.inhibit_alarms_and_faults()
Turn off inhibition - detector.remove_inhibit()

Release files for midas 0.8.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for midas 0.8.1
File	Size	Uploaded
midas-0.8.1.tar.gz	18.7 kB	Feb 16, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for midas 0.8.1
File	Interpreter	ABI	Platform	Reset
midas-0.8.1-py3-none-any.whl 17.0 kB Feb 16, 2026	Python 3	none	any	Details

Total release size: 35.7 kB

Release files / midas-0.8.1.tar.gz

Download URL	midas-0.8.1.tar.gz
Size	18.7 kB
Tags	Source
SHA-256 checksum How to use checksums	`e9949c4640e06ae8ff6f41374bda06878d6c33aaa98eb660e803be7d4e8db58e`
BLAKE2b-256 checksum How to use checksums	`f30335c5c55b3f55ab1554f05e43f109dbf4049e980b38d7674e276b9fb4266f`
Upload date	Feb 16, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/5.0.0 CPython/3.12.3`

Release files / midas-0.8.1-py3-none-any.whl

Download URL	midas-0.8.1-py3-none-any.whl
Size	17.0 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`d71632ed5a5d01bb5893bd40ff08136deb111020eb27222f72bf9a37c443abef`
BLAKE2b-256 checksum How to use checksums	`4843a40c3a77b010654f1f54f41031e89e8255a4942e1fb01faf29f580d9ff9e`
Upload date	Feb 16, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/5.0.0 CPython/3.12.3`