Implementação de um Datalogger utilizando DMA e UART

Abstract

This work presents the development of a low-cost datalogger using STM32 and ESP32 microcontrollers, integrated with a Python graphical interface. Aimed at providing an affordable alternative to traditional bench oscilloscopes, the project seeks to capture and analyze electrical signals in real time, contributing to the practical training of students in Electrical and Electronic Engineering. The implementation included an anti-aliasing filter to eliminate high-frequency components, ensuring signal fidelity during the analog-to-digital conversion process. By using DMA for efficient data transmission, the system achieved the required sampling rate, and the communication between the microcontrollers via UART allowed for the transfer and visualization of the captured signals in a graphical interface. The results demonstrated that the datalogger meets precision and performance requirements, standing out as an accessible educational tool for signal analysis in academic settings.