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Are you being spied – A Simple Field Strength Indicator (field strength meter)

This project is a broadband field strength sensing probe that has a 15cm antenna. It is able to detect radio energy and read the output on a common multimeter millivolts scale. It can be used to test 4MHz, 35 MHz, 55 MHz, 100 MHz, 384 MHz, 900 MHz, cell phone, and microwave oven. The meter is powered from a single cell battery and the circuit draws 60uA of current. [caption id="attachment_8174" align="align ...

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What is a stun gun – How to Make Stun Gun

What is Stun Gun An electroshock weapon is an incapacitant weapon used for incapacitating a person by administering electric shock aimed at disrupting superficial muscle functions. One type is a conductive energy device (CED) fires projectiles that administer the shock through a thin, flexible wire. Other electroshock weapons such as stun guns, stun batons, and electroshock belts administer an electric shoc ...

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How a Microwave oven works?

Bill details how a microwave oven heats food. He describes how the microwave vacuum tube, called a magnetron, generates radio frequencies that cause the water in food to rotate back and forth. [caption id="attachment_8043" align="aligncenter" width="563"] microwave interior structure[/caption] He shows the standing wave inside the oven, and notes how you can measure the wavelength with melted cheese. He con ...

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Atmega8 Pinout Diagram

ATmega8 is an atmel's low-power 8-bit AVR RISC-based microcontroller combines 8KB of programmable flash memory, 1KB of SRAM, 512K EEPROM, and a 6 or 8 channel 10-bit A/D converter. The device supports throughput of 16 MIPS at 16 MHz and operates between 2.7-5.5 volts. [caption id="attachment_7971" align="aligncenter" width="600"] avr Atmel atmega8 pinout[/caption] To find out its complete Specs, here is the ...

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SKL14 -1A Schottky diode will fit everywhere

SKL14 can be used in switch-mode power supplies or as protection diodes and thanks their really miniature dimensions, they are also suitable at the lack of PCB space.  SMT Technologies enable a substantial increase of current density thanks to a very good heat transfer from a component to a PCB. Almost a zero length of „leads“ of SMT components also features another positive aspects like a significant suppr ...

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USB Pinout

All Types of USB Pinout Diagrames Universal Serial Bus connectors. These USB connectors let you attach mice, printers and other accessories to your computer quickly and easily. The operating system supports USB as well, so the installation of the device drivers is quick and easy, too. Compared to other ways of connecting devices to your computer (including parallel ports, serial ports and special cards that ...

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The $9 Quasi-duino (Almost-duino)

Do you currently have an Arduino and want to make it smaller for cheap?  The Quasi-duino is for you (Italian for almost-duino).  This makes a functional "almost" Arduino, in a very small form factor using the narcoleptic library for pico-power operations on a pico-space breadboard.  This 'ible will use Arduino 1.0.  All of your Arduino code that you have made does not have to be formatted for the Quasi-duin ...

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