HEATKEYS

Distributor of electronic components and parts, DigiKey offers quality products with same day shipment, products include: Semiconductors, Capacitors, Relays, Resistors, AC DC Converters, Circuits, Microcontrollers, Power, Lighting & Wireless Supp...

CSGNetwork Free Information. Calculators, Converters, Glossary, Open Source Code... find something. Most pages require JavaScript.

Calculator City, calculators for algebra, geometry, trigonometry, calculus, finance, astronomy, physics, chemistry, time cards, HTML Colors, percentages, fractions

Hobby ideas, resources and information. A hobby is a great way to relax, gain experience and discover your hidden talent. Visit hobby-hour.com, and spend a quality hour with us.

The Jansson Family Home Page, WA USA

HF Radio - Amateur Radio World-Wide. Focusing on High Frequency Radio propagation, operation, equipment, as well as amateur (HAM) radio in general. Created as an extention of goodwill by amateur radio station NW7US.

The personal site of Bob Borst, a web developer in Ithaca, NY and confessed pop culture junkie.

Current limiting Resistor calculator for leds

DIY Home Security Alarm Forum - Experts volunteer help on Ademco, Caddx, DSC, Elk, GE, Moose and other systems

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

Texas Instruments (TI) is a global analog and digital semiconductor IC design and manufacturing company.