Why you need this function generator kit Provides flexible, reliable signal sources for development, testing, and learning — generate sine, triangular, and rectangular waveforms across a very broad frequency range to stimulate, probe, and diagnose circuits. Solves the common need for an affordable, portable signal source when a bench instrument isn’t available or when you need a dedicated signal for a prototype or classroom project. Stands out as an easy-to-assemble DIY kit with all through-hole components, making it suitable for hobbyists, students, and technicians who want hands-on experience plus a ready-to-use instrument after assembly. Key features and benefits Three waveform types: produces sine, triangular, and rectangular waves to match different test and signal-conditioning needs. Wide frequency range: 1 Hz to 1 MHz, fully adjustable so you can work with low-frequency control signals up to high-frequency testing for many circuits. Adjustable amplitude: change output level to suit inputs of amplifiers, filters, ADCs, and other devices under test. Flexible power options: accepts external 9–12 V supply or a 9 V battery (battery not included), enabling bench use or portable operation. DIY through-hole design: all components are through-hole, simplifying soldering and assembly for beginners and making repair or modification straightforward. Easy commissioning: kit is designed for straightforward installation and quick setup, so the unit becomes usable soon after assembly. Compatibility and performance Compatible with common electronics projects, breadboards, oscilloscopes, and audio or RF test setups that accept TTL/analog-level inputs. Adjustable frequency and amplitude allow integration with microcontroller inputs, analog filters, amplifier stages, and sensor test circuits without additional signal conditioning. Through-hole construction makes the kit tolerant of hand-soldering and easier to maintain or customize than surface-mount kits. Typical applications Electronics education and labs: teach waveform generation, signal analysis, and circuit response using a hands-on assembly process and a functional output device. Prototyping and troubleshooting: inject known waveforms into amplifier stages, filters, or ADC inputs to verify behavior and identify faults. Hobbyist and field use: portable signal source for small projects, sensor testing, or on-site troubleshooting when powered from a battery or a compact external adapter. What you’ll get and practical considerations A DIY function generator kit with all through-hole components included for manual assembly. Requires a 9–12 V external power supply or a 9 V battery (battery not included) for operation. After assembly, you can produce sine, triangular, and rectangular waveforms across 1 Hz–1 MHz with adjustable frequency and amplitude. This kit provides a practical, hands-on solution for creating a versatile signal source that’s useful for learning, repair, and prototyping without requiring advanced soldering skills.