precision signal generator for DIY electronics that can produce sine waves, triangular waves, and square waves with accuracy. Flexible control with clear specifications Frequency and amplitude adjustable: frequency range from 1 Hz to 1 MHz, amplitude easily adjusted to your test needs. Five accuracy resolution settings: coarse and fine tuning options for precise waveform timing. Power and portability options Wide power supply compatibility: supports external power supply (912 V) or a 9 V battery for portable testing. Use scenarios and applications Electronics testing and development: generate reference waveforms to characterize filters, amplifiers, and signal paths across the full frequency range. Microcontroller and sensor projects: provide stable reference signals for PWM validation, ADC timing checks, and signal integrity verification. Education and hobby experiments: learn waveform generation concepts and observe circuit responses with different waveforms and frequencies.