DIY Signal Generator Waveforms: can output sine waves, triangular waves, and square waves for versatile test signals in electronics projects. Wide frequency range: adjustable from 1 Hz to 1 MHz with adjustable output amplitude to suit different measurement needs. Precision control: five accuracy resolution settings provide both coarse and fine frequency adjustments for repeatable tests. Flexible power supply: can be powered from 9 to 12 V DC input or from a 9 V battery, enabling bench use and field or portable setups. Practical applications: useful for prototyping microcontroller interfaces, testing amplifier and filter responses, and educational experiments with different signal forms. Compatibility and usage scenarios: Prototyping and debugging: generate precise timing signals for microcontroller and logic circuit testing. Instrument calibration and verification: use known waveforms to validate oscilloscope, spectrum analyzers, and other test gear. Education and DIY projects: explore waveform behavior and frequency response across a wide range.