WaveGen — Alexa Voice-Controlled Function Generator

About this project

Build an Alexa voice-controlled precision function generator using ESP32 dual DACs, DDS (Direct Digital Synthesis) algorithms, and op-amp output stages. Generate sine, square, triangle, and sawtooth waveforms via voice commands like "Alexa, set frequency to 1 kilohertz" or "Alexa, switch to square wave". Features adjustable frequency (0.1Hz to 100kHz), amplitude control (0-10Vpp), DC offset adjustment, sweep mode for filter testing, and OLED waveform preview. Perfect for electronics labs, audio circuit testing, and sensor calibration without manual knob adjustments.

What you get

• Complete, commented source code
• Full components list with quantities
• Pin-by-pin wiring guide and connection table
• Step-by-step upload and testing guide
• Project report (.docx, IEEE style)
• Presentation slides (.pptx)