Package: hardpotato
Hard Potato libraryWelcome to the hardpotato GitHub repository. Hard Potato is an open source Python
API to control commercially available potentiostats. It enables researchers to
write Python scripts that can include experimentation, immediate data analysis
using any third-party library and/or the control of other instruments. Hard Potato
facilitates the standardization of electrochemical experiments by keeping a
record of the experiments and data analysis that can be later run again to ensure
repeatability. It also facilitates the sharing of electrochemical protocols
between researchers and groups that own different potentiostats.Currently, the following potentiostats are included in the library:CHI1205B from CH Instruments (chi1205b)CHI1242B from CH Instruments (chi1242b)CHI601E from CH Instruments (chi601e)CHI760E from CH Instruments (chi760e)Emstat Pico from PalmSens (emstatpico)with the following techniques:Cyclic voltammetry, CVChronoamperometry, CALinear sweep voltammetry, LSVOpen circuit potential, OCPFor the CHI601E and CHI760E only:Normal pulse voltammetry, NPVInstallationOpen a console and type:pipinstallhardpotatoExample: techniquesHere are quick examples on how to use the library. For more help check theWiki.importhardpotatoashp# Potentiostat setup# Choose the correct model from ['chi760e', 'chi1205b', 'emstatpico']:model='chi760e'# Write the path where the chi software is installed (this line is optional when# using the Pico). Make sure to use / instead of \:path='C:/Users/jrl/CHI/chi760e.exe'# This is ignored for the Pico# Write the path where the data and plots are going to be automatically saved:folder='C:/Users/jrl/Experiments/data'# Setup:hp.potentiostat.Setup(model,path,folder)# Run CV with default values:cv=hp.potentiostat.CV()#cv.bipot() # uncomment to activate second working electrodecv.run()# Run a LSV with default values:lsv=hp.potentiostat.LSV()#lsv.bipot() # uncomment to activate second working electrodelsv.run()# Run a CA with default values:ca=hp.potentiostat.CA()#ca.bipot() # uncomment to activate second working electrodeca.run()# Run an OCP with default values:ocp=hp.potentiostat.OCP()ocp.run()Notes for CH Instruments usersSince the CHI potentiostat software only works in Windows, any script written with
hardpotato will only work in Windows.The CHI translators use macro commands that are only available in the most
recent versions of the software. Please contact CHI support for help on updating
the potentiostat software and firmware.Notes for Emstat Pico usersContact PalmSens for instructions on how to update the firmware of the Pico.The communication to the Pico is done via the serial port, this means that no
external software is required. Because of this, there is no live plotting, however,
the data and plots are saved when the measurement is finished.Scripts written for the pico may also work in other operating systems, provided
the library is installed correctly. So far, hardpotato with the Pico has been
tested in Windows 10 and Manjaro Linux with kernel 5.15.xx; it has not been tested
with MacOS although it should work.Requirementsnumpy for data handlingmatplotlib for plottingscipy for fittingpyserial for serial handlingsoftpotatofor electrochemical equations and simulationsAcknowledgementsTo CH Instruments for making their software flexible enough that it can be
started from the Windows command line and for creating the Macros.To PalmSens for developing MethodScript and writing code for parsing data. The
code is in thePalmSens MethodScript GitHub account.This development is funded by the Joint Center for Energy Storage Research (JCESR).AuthorsHard Potato was developed at theBeckman Institute, University of Illinois at Urbana-Champaign, Feb 2021 to Jan 2023 by:Lead: Oliver Rodriguez (oliverrdz.xyz,oliver.rdz@softpotato.xyz)Support: Michael Pence (mapence2@illinois.edu)PI: Joaquin Rodriguez-Lopez (joaquinr@illinois.edu)