README.md

OhmPi

Development of a low-cost multi-electrodes resistivity meter for electrical resistivity mesaurement for lab applications, based on raspberry board

Installation

All dependencies are specified in requirements.txt

Note: all instructions below should be typed in the terminal

It is first necessary to create an OhmPi virtual environment and install all dependancies .create_ohmpi_virtual_envrinment.sh

When the installation is completed check that requirements are met using pip list

We strongly recommend users to create a virtual environment to run the code and installed all required dependencies:

• activate it using the following command: source ohmpy/bin/activate
• you should run you code within the virtual environment
• to leave the virtual environment simply type: deactivate

First run with four electrodes

In the examples folder, you will find the code "simple_measurement.py".

Running this code, in Thonny (IDE) or in the terminal, will allow you to make a simple 4 electrodes measurement A B M N.

Citing Ohmpi

If you use Ohmpi for you work, please cite this paper as:

Rémi Clement, Yannick Fargier, Vivien Dubois, Julien Gance, Emile Gros, Nicolas Forquet, OhmPi: An open source data logger for 
dedicated applications of electrical resistivity imaging at the small and laboratory scale, HardwareX, Volume 8, 2020, e00122, ISSN 2468-0672, https://doi.org/10.1016/j.ohx.2020.e00122..

License information

You may redistribute and modify this documentation and make products using it under the terms of the CERN-OHL-P v2 (https:/cern.ch/cern-ohl). This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN-OHL-P v2 for applicable conditions