precision DIY signal generator that provides reliable waveform signals for electronics projects. It is capable of producing sine waves, triangular waves, and square waves with accuracy, making it suitable for a range of testing and educational tasks. Key features and benefits Waveform versatility: generates sine, triangle, and square waves with precision to support circuit testing, measurement, and demonstration. Flexible frequency and amplitude control: frequency adjustable from 1 Hz to 1 MHz and amplitude easy to adjust to suit different test scenarios. Accurate tuning options: five accuracy resolution settings allow both coarse adjustments and fine tuning for precise signal generation. Flexible power options: accepts an external power supply (9–12 V) or can run from a 9 V battery, enabling use in various bench or field environments. What makes it stand out Focused on practical DIY use with a clear balance of range, accuracy, and ease of use. Designed to support common electronics testing tasks without requiring additional accessories. Suitable for a variety of environments, from home labs to classrooms, thanks to its versatile power options. Applications and use scenarios Electronics circuit testing: characterize filters, amplifiers, and analog circuits by applying stable sine, triangle, or square wave signals across a wide frequency range. Microcontroller and sensor projects: provide reliable test signals for ADC/DAC calibration, PWM experiments, and timing verification in development boards. Educational demonstrations: illustrate waveform properties, frequency response, and timing concepts in teaching labs or DIY courses. Performance and compatibility Waveforms: sine, triangle, and square Frequency range: 1 Hz to 1 MHz Amplitude: adjustable Accuracy: five resolution settings for coarse and fine tuning Power options: external 9–12 V supply or 9 V battery This description reflects the product's function, capabilities, and practical uses while staying true to the original specifications and intended use.