HEATKEYS

This site offers many tutorials on electronics, including resistors, capacitors, inductors, voltage regulators, and many different ICs.

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

ESP - The Audio Pages. Professional results for the DIY enthusiast. Audio articles, projects to build and general information about hi-fi amplifiers, loudspeakers and audio in general.

YouTube is a place to discover, watch, upload and share videos.

Sine Systems designs and manufacturers broadcast communications and control equipment for radio and television broadcast stations.

Electronic Ciruits portal of free electronic circuits, schematics, designs, or diagrams & other resources for engineers, inventors & students.

Information and supplies for science fair projects regarding physics, computers, electronics and robotics. featuring: electronics, robotics, speech recognition, geiger counters, ecoSpheres, nitinol, sma, pic, microcontrollers, picbasic, picbasic pro...

Microchip provides Microcontroller and Analog Semiconductors, with low-risk product development, lower total system cost and faster time to market.

Electrical Engineering Community for hardware designers with design tools, projects, articles, jobs, events, discussions, and social networking.