http://www.ladyada.net/wiki/ 2009-11-17T21:50:27-05:00 http://www.ladyada.net/wiki/ http://www.ladyada.net/wiki/lib/images/favicon.ico text/html 2007-04-28T21:48:22-05:00 http://www.ladyada.net/wiki/partselector/caps?rev=1177811302&do=diff This is a list of the least expensive 'hobbyist' parts available from popular distributors such as Mouser, Digikey and Jameco. The aim is to provide a library of the most commonly used parts. So when you need a 100uF capacitor you can be sure that the links here will take you to the cheapest part. text/html 2009-01-08T17:20:18-05:00 http://www.ladyada.net/wiki/partselector/connectors?rev=1231453218&do=diff Female Header PCB straight Digi-Key * Sullins PPTCxx1LFBN-RC (Datasheet) where xx is the number of pins. * E.g., Sullins PPTC361LFBN-RC ($1.75) has 36 pins. ~ $0.05 per pin * Gold plated contacts * Not 'break-away.' Mouser * Tin-plated Contacts * 3M 92-9974-01-xx for one row (e.g., 92-9974-01-36 == $2.15) * 3M 92-9975-01-xx for two rows (e.g., 92-9975-01-36 == $3.74) text/html 2007-12-03T00:11:30-05:00 http://www.ladyada.net/wiki/partselector/leds?rev=1196658690&do=diff LEDs tend to be used in one of two ways: either for indication or illumination. Indicator LEDs are low power, cheap LEDs that don't emit much light. For example, LEDs used to indicate that power is plugged in, or that a battery is charged. You can use high output LEDs and put less current through them (by using a larger series resistor) text/html 2007-12-03T00:11:31-05:00 http://www.ladyada.net/wiki/partselector/mech?rev=1196658691&do=diff Header Molex Waldon 22-28-4360 ($1.68 for 36 position) text/html 2007-04-28T20:38:41-05:00 http://www.ladyada.net/wiki/partselector/resistors?rev=1177807121&do=diff Through-hole 1/4W 5% Carbon The most common resistors are 1/4W 5% carbon film. Unless otherwise specified, this is what is considered the 'default' resistor. 5% resistors are available in the following values: 2.2, 2.4, 2.7, 3.0, 3.3, 3.6, 3.9, 4.3, 4.7, 5.1, 5.6, 6.2, 6.8, 7.5, 8.2, 9.1 10, 11, 12, 13, 15, 16, 18, 20, 22, 24, 27, 30, 33, 36, 39, 43, 47, 51, 56, 62, 68, 75, 82, 91, 100, 110, 120, 130, 150, 160, 180, 200, 220, 240, 270, 300, 330, 360, 390, 430, 470, 510, 560, 620, 680, 7… text/html 2007-07-26T19:53:56-05:00 http://www.ladyada.net/wiki/partselector/start?rev=1185494036&do=diff Think of this as an expert system for picking parts... Almost everyone pretty much picks the same part for a purpose. With lots of practice, you can easily figure out what the 'most common' part is but it's always good to get some help along the way! text/html 2007-12-03T11:36:46-05:00 http://www.ladyada.net/wiki/partselector/vreg?rev=1196699806&do=diff Voltage regulators are used for lowering the input voltage to the desired output volgage. Different types include: * linear regulators * switching regulators * DC/DC converters Linear regulators Fixed regulators 78xx, 79xx The simplest and best known regulators are the 78xx and 79xx series, where xx is the desired output voltage. They have three pins: input, output and ground. 7805 will get you 5V on the output pin, as long as you supply an input voltage of at least 3V higher. 79xx S…