Arduino Panic Alarm circuit

Published:2013/8/30 2:19:00 Author:lynne | Keyword: Arduino Panic Alarm circuit | From:SeekIC

Arduino is a family of microcontrollers (tiny computers) and a software creation environment (Arduino IDE) that makes it easy for you to create programs (called sketches) that can interact with the physical world. The Arduino environment has been designed to be easy to use for beginners who have no software or electronics experience. However, try to learn more/refresh your knowledge about arduino platfrom, before constructing this circuit. If you are new to Arduino, this link will help you get started http://arduino.cc. In addition, there is an active and supportive Arduino community that is accessible worldwide through the Arduino forums.The forums offer project development examples and solutions to problems that can provide inspiration and assistance as you pursue your own projects. Here is a simple Arduino guide for beginners www.me.umn.edu/courses/me2011/arduino/arduinoGuide.pdf Panic Alarm circuit consists of two equally important parts. The first part is the ready-made Arduino Microcontroller board, and the second part is an interface circuit which can be wired on a piece of prototyping board. You can use any standard 9V battery to power the whole circuit, and the Push-ON (push ‘n’ hold) switch (S1) to activate the alarm function. An additional Electro-Magnetic Relay (EMR) is also attached to the interface circuit. With the help of this relay, it is easy to energize other (external) high-power blinkers or beepers, if necessary. Panic Alarm Lab Notes Prototype was constructed & tested using “Arduino UNO-R3” board Sketch created,compiled & uploaded (to Arduino board) using Arduino IDE0022 Piezo-Speaker in the circuit is a “passive piezo-speaker”. Do not use an “active piezo-buzzer” Use standard flexible wires for interconnection between two boards. Keep the wire length as short as possible A 9VDC/1A SMPS power supply can be used as an alternative to the 9V battery. Remember to keep an eye on supply polarity A “9VDC/225 Ohm” Electro-Magnetic Relay was used in the prototype. Contact Capacity of the relay (resistive Load) is 10A 250VAC/10A 30VD



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