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Things You'll Need
Instructions
Mount the prototyping board. This board has a grid of small holes with copper tracks that connect each row. Mounting the board on a vise will hold it steady while leaving both hands free for inserting components and soldering them into place.
Install the 16-pin CMOS 4060 integrated circuit. You will first solder a 16-pin integrated circuit socket to the board. Line up the socket so that each of its pins sit over a hole in the board. Press down until the socket snaps into place. Then heat your solder with the soldering iron and use it to create a joint between the copper of the prototyping board and the pins of the socket. After the socket cools, press the CMOS chip into the socket.
Wire the resistors and diodes to the CMOS chip. Both types of components have wire leads at each end. When you find a suitable location for each component, bend the leads down and push them through the prototyping board. Solder these components to the board in the same way that you soldered the integrated circuit sockets
Only about half of the CMOS pins connect to some other component on the board. Pins 4, 5 and 6 go to their own respective diodes. You will wire Pin 7 to two different 4-kiloohm resistors. Pin 9 connects to a 27 kiloohm resistor. Pin 10 goes to a 68k resistor. Pin 11 goes to a 4-megaohm resistor. Pins 13 and 14 go to their own respective diodes.
Solder all other components not directly connected to the CMOS chip. These include resistors, capacitors, a relay, a rectifier and screw terminals which connect to an external buzzer, siren, trigger and power supply.
Plug in the power supply. The power source for this circuit is a 12-volt battery pack.
Connect all other external components. The buzzer is an indicator that the alarm is arming. Once you throw the switch to turn on the alarm, the buzzer pulses eight times before the alarm arms. Afterward, if someone trips the alarm trigger, the siren goes off until you reset the alarm. The N/C loop screw terminal connects to an external sensor such as a pair of magnetic reeds. Magnetic reeds are two small devices that, when separated, break the loop at the N/C terminal. This causes the siren to go off.
Place your alarm annunciator on a door or window. For example, you can place one reed on a window frame and the other close by on the window sill. When the window opens, the link between the two reeds will break and trigger the siren.