Design of Compact, Low-cost Electrochemical Electronic Reader (Potentiostat) for Chemical Compound Analysis

Harimurti, Suksmandhira (Flexens Lab, Electrical Engineering Study Program, School of Electrical Engineering, Telkom University, Main Campus, Bandung, Indonesia Center of Excellence Biomedical Healthcare Technology, Research Institute of Digital Health, Social, and Wellness,)
Gamalyn, Irene Maria (Lab on Chip Laboratory, Biomedical Engineering Department, School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Bandung, Indonesia)
Johan, Tengku Abdurrazak (Flexens Lab, Electrical Engineering Study Program, School of Electrical Engineering, Telkom University, Main Campus, Bandung, Indonesia)
Septian, M. Rivaldi Ali (Flexens Lab, Electrical Engineering Study Program, School of Electrical Engineering, Telkom University, Main Campus, Bandung, Indonesia)
Anshori, Isa (Lab on Chip Laboratory, Biomedical Engineering Department, School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Bandung, Indonesia Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Bandung, Indo)
Estananto, Estananto (Flexens Lab, Electrical Engineering Study Program, School of Electrical Engineering, Telkom University, Main Campus, Bandung, Indonesia)

Indonesian Journal of Electrical Engineering and Informatics (IJEEI)
Vol 13, No 4: December 2025

The development of low-cost electrochemical electronic reader (potentiostat) has been vastly growing recently since it could serve as a rapid chemical compound detection. Nevertheless, the realization of a low-cost potentiostat, having a compact size and providing multi-feature, is challenging. Here, a compact, low-cost potentiostat, supporting multi electrochemical methods was demonstrated. The total dimension was (10.8 x 4.6 x 3.5) cm3 with the weight of only 75.6 g. By using 16-bit analog-to-digital converter (ADC) and 12-bit digital-to-analog converter (DAC) components, the potentiostat facilitated a current input range of ±580 µA with a resolution of 23.5 nA and a voltage sweep range of ±1.5 V with a resolution of 800 µV. For the electrochemical measurement, it supported cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods. Furthermore, in comparison with a commercial potentiostat (Sensit Smart), the potentiostat showcased a good accuracy performance. In detail, the average relative accuracy of the CV method test was 91% and 95% for the anodic (Ianodic) and cathodic peak currents (Icathodic), respectively. For DPV method, the lowest relative accuracy of the peak current (Ipeak) was still 83%. These results demonstrated that our potentiostat could promisingly be utilized for chemical compound detection in low-cost setting or rural areas.