precision DIY signal generator that can produce sine, triangle, and square waves. It covers a wide frequency range from 1 Hz to 1 MHz and offers adjustable output amplitude to suit different test scenarios. Five accuracy resolution with coarse and fine adjustment options, enabling quick setup and precise signal tuning when testing circuits. Flexible power options for varied environments: powered by a 912 V external supply or by a 9 V battery, providing bench and portable use without extra adapters. Simple installation and debugging: designed with a small number of components and directinsertion capability, making assembly straightforward and debugging efficient. Practical use scenarios: Electronics lab bench testing of filters, amplifiers, and opamp circuits using settings that match real operating conditions. Microcontroller and digital electronics validation, including testing ADC/DAC paths and PWMbased signals with accurate waveforms. Portable field diagnostics and onsite troubleshooting where only a 9 V power source is available, enabling quick signal generation in the field.