Abstract
<jats:p>The paper investigates the feasibility of using low-cost microcontroller platforms to build a strain-gauge measurement system. A measurement scheme based on the ESP32 microcontroller and the 24-bit HX711 analog-to-digital converter was implemented for measuring deformations of a cantilever beam made of 6063 (AD-31) aluminum alloy. Software for real-time visualization of measurement results was developed. Field calibration of the system was performed using linear regression. Determination coefficients R² > 0.9997 were obtained, confirming the high linearity of the response. The long-term stability of the system was investigated over a period of one year: a zero-value drift was recorded while the sensitivity of the measurement channels was preserved. Possible causes of drift were analyzed, and recommendations for improving measurement stability were formulated. A concept of a multi-level architecture for the application of the system under operational conditions of aircraft structures was elaborated.</jats:p>