AXIO MET AX-178 multimeter logger

This program allows logging of the AXIO MET AX-178 multimeter from the command line. It was developed by reverse-engineering the sent data. The code has been tested on Debian Linux.

Installation

Install the bitarray and serial packages, e.g. through the following commands.

virtualenv venv -p /usr/bin/python3
. venv/bin/activate
pip install bitarray pyserial

Execution

• Setup the multimeter to the desired value (manual range, hold, and min/max measurements are not supported)
• Press and hold the hold button to start sending values
• Start the program with a command such as ./axio-logger.py /dev/ttyUSB0 Values appear on the command's standard output.
• Run axio-logger.py -h to see available command-line options
• If you see an error, such as Unknown measurement mode bitarray('100000000') (v=9250161) where v doesn't match what you see on the screen, you've hit a serial port synchronization error. Stop the program (e.g. with ^C) and start it again.