/challenges-projects/project14/spring-clean/b/spring-clean-projects-2026/posts/building-a-standalone-esp32-signal-generatorBackground: What Is a Lissajous Figure? When you feed two sine waves into the X and Y inputs of an oscilloscope in XY mode, the resulting trace is a Lissajous figure, a looping pattern determined by the frequency ratio and phase offset between the twen-USTelligent Community 12