/diy/ - Do It Yourself

>>2793089
I've built analog breadboard computers. Here's one generating a circle using the pythagorean theorem.

An analog "computer" isn't a computer in the modern sense. It's a circuit that solves a single equation using a sequence of things like voltage adders, voltage dividers, logarithmic amplifiers, etc. Once you understand how to do simple things like multiplying and subtracting voltages with op-amps you can build a circuit that solves most equations.

If you start getting into it you might stumble on analog multiplier chips, then realize they cost hundreds of dollars. You don't need these. You can do multiplaction with log and antolog opamp circuits.

An analog computer is really not a beginner project. Start with something much simpler like a headphone amplifier.