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Last edited by Emmanuel Maisonhaute
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low_cost_potentiostat (PassStat)

Project description

A low cost potentiostat circuit to perform electrochemistry experiments with still high performances. Several implementations are proposed. The system may be driven by a Teensy 3.2 or 3.6 card from PJRC (Arduino IDE) or by power supplies, generator and oscilloscope.

A Python software is provide for PC, Macintosh or Linux operation, and an Android application for Bluetooth remote control. The noise resolution may be below 1 pA while the maximum scan rate may attain 8000 V/s.

PassStat PassStat prototype and performance curve

Main Features

  • Can be driven by a Teensy 3.2 or 3.6 card (low cost option). maximul scan rate 100 V/s

  • Alternatively can be driven thanks to 2 power supplies, one generator and one oscilloscope. We used the Analog Discovery 2 from Digilent that offers all these features in a single device at a low price. Maximum scan rate 8000 V/s.

  • The gain and bandwidth can be easily adjusted by the user by simply changing a resistance and a capacitance.

  • Software

    • A Arduino program and a python software allow use with PC, Mac or linux computer
    • A Arduino program and an Android application allow driving the system with a smartphone (Android 4 or superior)

  • Cyclic voltammetry and Square Wave Voltammetry, two very common techniques are implemented.

Project information

A paper is going to be submitted soon to Hardware X with device description, implementation and operating instructions

Contacts

General questions about project

Status

Date Event
10-01-2021 Start working on project. Collecting main specifications.

30 September 2021