Hackaday

A beginner-friendly tutorial demonstrates building a function generator on a breadboard using a 555 timer for square-wave generation and a TL082 dual op-amp to create triangle waves. The guide explains the internal workings of the 555 timer as a relaxation oscillator, shows how to add frequency control with potentiometers, and uses an integrator circuit to convert square waves to triangle waves. The tutorial concludes with a challenge to modify the circuit for sine-wave generation.

555-Based Square-Wave And Triangle-Wave Function Generator Build For Beginners