Parts and Supplies
Since 1967 - one of the standby surplus and deep discount electronics vendors. Offers a mix of interesting/unique items along with a catalog of standard parts - connectors, batteries, ICs, resistors, capacitors, motors and LEDs. Good service and fast shipping.
Surplus and deep discounts on gadgets, parts, grab-bags and kits. Robot parts and kits, solar, flashlights, LEDS, motors, switches, tools.
Distributor of electronics, electronic components, electronic parts, electronic kits, hobby electronics, surplus electronics, science and technology, power supplies, educational projects and grab bags.
Kits and Microcontrollers
Hobbytron Electronic Kits
Full line of electronic kits—everything from amps and audio kits to surveillance and clock kits.
From AM & FM Transmitters, Hobby Kits, Video Cameras, Time & Weather Products, Amateur Radio Gear, Mini-Kits, or just Neat Stuff, we make working with electronics not only fun, but also a great learning experience.
Makers of the Basic Stamp family of microcontrollers and kits.
An electronics kit for learning about microcontrollers project. Free project videos online. Supports Windows, Mac OSX, and Linux, and includes the Official NerdKits Guide with sample code, a C compiler, an LCD display, temperature sensor, buzzer, LEDs and buttons/switches.
Design, manufacture, and world wide distribution of FPGA and microcontroller technologies. Full line of development/project boards - Cerebot boards with PIC micros, the Arduino compatible chipKit driven by the 32 bit MIPS PIC32, Xilinx FPGA, and more. Features PMods small I/O interface boards that offer an ideal way to extend the capabilities of many system boards.
Circuits and Project Plans
Electronic Circuits portal of 28,000+ electronic circuits, cross-referenced into 500+ categories. Schematics, designs, or diagrams and other resources for engineers, inventors and students.
All About Circuits
Comprehensive online textbook covering electricity and electronics with a good treatment of digital electronics.
This is a fun online circuit simulator. It takes a minute to get the idea.
Evil Mad Scientist Laboratories
Making the World a Better Place, One Evil Mad Scientist at a Time. New projects posted every Wednesday.
How to Get What You Want
A truly unique site for those interested in interactive art projects that synthesize textiles and electronics. Features unbiased evaluations of conductive paints, glues, and fabrics with easy to understand instructions and advice for designing you own flexible sensors - a textile mouse, a piano t-shirt, a pom pom tilt sensor, a zipper slider and a felted crochet pressure sensor are just a few of the projects you'll find here.
This is an educational site of PIC Projects in various stages of development along with pictures, source files, object code files, schematics, and board layouts.
Stripboard at the Electronics Club
Detailed tutorial on this classic but still quite useful prototyping method. Includes photos and diagrams. Advice on placing components, cutting tracks and planning a layout. The site also has a downloadable stripboard planning sheet with dots at 0.1" (2.54mm) intervals that you can print out and use to sketch out your designs.
Articles on many topics including analogue and digital electronics, electronic kits, and part reviews. Probably most notable is their series of Getting Started (and Moving Forward) with Arduino tutorials. The site also links to a Google Group for discussion and features a monthly prize giveaway.
A neat electronics website that features tutorials, pinouts for common components. The site has a suite and a suite of online calculators, just a few of which include series/parallel calculators for both resistance and capacitance, an LED series calculator, and a Wheatstone Bridge calculator. The site includes several important software downloads. Electronics Assistant is free software that contains all of the Electronics 2000 online calculators with additional calculators and capabilities.
A pretty amazing, fairly complete online implementation of BASIC in the old, line-numbered GWBASIC style. It's robust - there are some good sample programs at the site with full color games etc.
The Great Z80 Computer Project
Gives good detail on the first-person experience of building a complete Z80 based homebrew. An enjoyable narrative that can teach a lot.
A.I. Nexus Forum
A discussion and help forum for Pandorabots, ALICE and Other AI Chatbots.