Gerador de ondas arbitrárias controlado por aplicativo móvel

Abstract

The signal generator is an important test instrument in electronic circuits because generates electrical voltage signals. However, it has a limitation regarding the waveforms output, the most common being: sinusoidal, triangular and square. In applications that require more complex signals, an arbitrary waveform generator is used, which is capable of generating signals with a user-configurable format. Thus, the objective of this work was the development of an open source, digitally controlled arbitrary waveform generator by a mobile application, offering an alternative to commercial generators, providing greater mobility and possibility of replication. For this, the synthesis of arbitrary signals was made using the technique of Direct Digital Synthesis in a microcontroller of the MSP430 family. An output stage containing digital to analog converters to perform the conversion of amplitude values and cc (offset) level. A mobile app was developed to configure the signals which sends the parameters to the microcontroller via a Bluetooth protocol. You results obtained were satisfactory, since the generator offers signals of up to 45 kHz fully user-configured through the app.