Alexa Function Generator
Electronics
Advanced
ESP32
Arduino C++
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)
