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Showing posts with the label homemade

Homemade electronic parts

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Use at your own risk!! Get help before hand from a professional. A device used to store an electric charge, consisting of one or more pairs of conductors separated by an insulator. A semiconductor device with two terminals, typically allowing the flow of current in one direction only. A thermionic tube having two electrodes (an anode and a cathode).   An inductor , also called a coil or reactor, is a passive two-terminal electrical component which resists changes in electric current passing through it. It consists of a conductor such as a wire, usually wound into a coil . When a current flows through it, energy is stored temporarily in a magnetic field in the coil . Transformer: A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. Resistors act to reduce current flow, and, at the same time, act to lower voltage levels within circuits

Antenna duel.

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http://www.instructables.com/id/ClearTV-antenna-lookalike/

Homemade Arduino.

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Building a stanalone arduino is like being a shadetree mechanic, but wihtout all the grease.  If you have the original Arduino board with the removable dip Atmega328 chip you can very easily create your own standalone Arduino after programming the atmega chip while socked on the board.   In this case, I purchased a single atmega328 chuip added a 16 mhz resnator and a 10k resistor to make the basic circuit. Using a crystal and two capacitors is more accurate especially for communication circuits. You can get prettier schmatics on line. With the aruino chip removed, you can even program it from the standalone circuit.    http://arduino.cc/en/Tutorial/ArduinoToBreadboard   has more information about setting up a standalone arduino.Simple blinky routine. <code> /* Blink Turns on an LED on for one second, then off for one second, repeatedly.This example code is in the public domain. */// Pin 13 has an LED connected on most Arduino boards. // give it a n...

Making of a sprial antenna

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Experimenting with gifs to see if they do a job as well as a movie. More antennas at: http://www.instructables.com/id/Antennas-TV-Wifi-and-etc/