Home security projects
This title contains useful design ideas for various security devices around the home, components for which are affordable and readily available. Clear construction and installation instructions, accompanied by circuit designs, PCB layouts and a list of the necessary components, allow the reader to design anything from a gas leak detector to an electronic watchdog. Based on projects from Electronics - the Maplin Magazine, this book provides a practical guide for anyone with a basic knowledge of electronic circuit construction and allows them to put that knowledge to good use.
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ABS box analogue switch battery clip bolts burglar alarm button buzzer cable capacitor ceramic circuit diagram code-lock components connected construction constructors desolder detector digit diode door lock drilled electrolytic capacitors electronic ensure external guide 1 XH79L hole ICla IClc infra-red input insert and solder installed integrated circuits key switch Keycode Lock keyswitch latch lead legend and track light list Resistors M3 nuts magnetic switch Mains Opto Switch mains socket Maplin Maplin Electronics metal module mounted multimeter o o o o o ooooooooo ooooooooo ooooooooo operate output pattress PC electrolytic PCB legend PCB pins peep alarm piezo piezo sounder polarity polylayer power supply PP3 battery PP3-sized battery preset pulse reed switch relay remove screw security loop sensitivity control sensor shown in Figure siren sound surface-mounted terminal toggle track side transformer transistor triggered unit voltage wire links zip wire