We-VoltamoStat: A wearable potentiostat for voltammetry analysis with a smartphone interface

Area of Science:

• Biomedical Engineering
• Wearable Technology
• Electrochemistry

Background:

• Wearable technology is increasingly vital for continuous healthcare and biomedical monitoring.
• Existing open-source wearable potentiostats face limitations including short battery life, bulkiness, and wired data transmission.
• These limitations hinder comfort and practicality for prolonged physiological health measurements.

Purpose of the Study:

• To develop an open-source wearable potentiostat device, named We-VoltamoStat, for research, product development, and education.
• To address design limitations of current wearable potentiostats.
• To enable wireless real-time signal monitoring and data collection.

Main Methods:

• Development of the We-VoltamoStat, an open-source wearable potentiostat.
• Integration of wireless real-time signal monitoring and data collection capabilities.
• Implementation of ultra-low power consumption for extended battery life.
• Validation of device accuracy through linear regression analysis.

Main Results:

• The We-VoltamoStat features ultra-low power consumption (15 mA operating, 5 mA standby) for extended battery life (33h 20min operating, 100h standby).
• The device boasts a compact size (67x54x38 mm), rugged design, and cost-effectiveness (<120 USD).
• Validation demonstrated high accuracy with an R2 value of 0.99 for detecting signals in the milli-, micro-, and nano-Ampere range.

Conclusions:

• The We-VoltamoStat is a convenient, cost-effective, and accurate open-source wearable potentiostat suitable for various applications.
• Its design overcomes key limitations of existing wearable potentiostats, enhancing user comfort and data accessibility.
• Future work should focus on further design improvements and expanding the application range of wearable potentiostats.