Circuit diagrams and schematics are visual representations of circuits. These images are used to convey information about how to wire a circuit. Often when looking for electronics projects the first ...

To drive the SIM900A GSM module to send an alert message to a mobile number. To switch on the bell/siren as an alert. Construction and Testing. Assemble the circuit on a breadboard or general-purpose ...

Block Diagram. The security system ... The circuit is highly-flexible so that you can use any SIM900A modem (and ofcourse any Arduino Uno board) of your choice. Carefully read the modem documentation ...

It also addresses security constraints in terms of the functionality, usability, and reliability through several tests. Flowchart, block diagram, and wiring diagram were used to document the ...

This paper represents a design and implementation of a Wireless Heart rate monitor system using ARDUINO Lilypad which is enabled with the feature of sending SOS messages or calls through GSM module.