Circuits, Bending, Electronics, Effects:
Anonymous - a great site for DIY devices, with a discussion forum
and extensive schematic archive.
Stompbox Page - one of the best places for stomp box design, with
vast archives, guides and a forum.
Guitar Gadgets - many excellent guitar effects projects.
Geofex - DIY guides,
- great site with schematics that emulate classic amp designs.
- audio electronics cooperative collection with extreme device design.
Hollis (Guitar Effects), John
Hollis (Circuit Bending) - interesting designs and a great circuit
bending info page.
Ghazala - early circuit bending pioneer.
- details of Speak & Spell bending.
Paia - long running
DIY audio electronics company with lots of info dotted around the site.
Gear - many old electronic magazine articles for DIY audio machines.
Electronic Component Supplies:
Electronics - the most highly recommended supplier in the UK.
Small Bear Electronics
- excellent US based company with lots of hard to find guitar effects
components and a bunch of info.
Digikey - large
US based supplier, good for certain things (eg voice recording chips).