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