Analog vs Digital Pedals
An analog pedal shapes your guitar signal directly as continuous voltage, using resistors, capacitors, transistors, and op-amps. A digital pedal converts that voltage into numbers, runs code on those numbers, and converts the result back into voltage. Same goal, two fundamentally different mechanisms — this page exists to point you toward whichever one matches what you're building.
Pick Effects if you're building a fixed circuit from components
If the build in front of you is defined by a schematic and a parts list — a fuzz face, a Tube Screamer clone, a reverb tank — you're in analog territory. Start with Fundamentals if you haven't already, then head to Effects for the specific circuit type you're building.
Pick Digital if you're building on the Electrosmith Daisy Seed
If the build in front of you is a Daisy Seed or Hothouse platform, and the effect's character comes from code rather than component values, you're in digital territory. Digital & Daisy covers the Daisy Seed itself, the Hothouse build, DSP fundamentals, and writing effects in C++.
Most builders end up needing both books eventually
The two approaches aren't competing — they're different tools for different builds, and the DSP concepts inDSP basics for guitarists are explicitly written as digital translations of the analog concepts in Fundamentals. Reading both books isn't redundant; it's how the same underlying ideas — filtering, clipping, gain — get reinforced from two directions.