Instrumentação [Semi-]automatizada, DAQ-DAC baseada em Python - Arduino

Abstract

The objective of this work is the creation of an instrumentation for teaching laboratories, at medium and higher level, that approaches the applicability of research laboratories and industrial laboratories. In this sense, the project seeks to provide automated data collection and statistical treatment. The instrumentation developed is controlled via software, with high level languagePython and device level control through the arduino platform. As languages are intelligible and have an expansive community of developers on the network, which facilitates the use of the developed instrument. The purpose is to create modules that can allow their expansion over time through the creation of other modules. Initially, it is proposed a data acquisition module composed by a digital analog converter (ADC), produced by Analog Devices (AD7794), which has an adjustable gain signal proprocessing stage via software, and several multiplexed entries. The other module developed was a digital analog converter (DAC) that allows the user to connect it to a power circuit, such as an operational amplifier, to power circuits or drive electrical devices. It is concluded that this instrumentation can serve as a basic for conducting automated experiments in physics teaching in Brazilian public schools, bringing to the classroom the discussion of theoretical physics behind each experiment developed. In addition, it can allow interested institutions to have access to quality and low - cost instrumentation, accessible and open to users from different segments.