Today I am going to make a circuit of bicycle security alarm circuit.when any body will touch bike then buzzer will activate and give sound.
Let's get started,
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Step 1: Take All Components As Shown Below
Step 2: Circuit Diagram
Connect all components on the PCB according to the circuit diagram.
Step 3: Solder IC Base on the PCB Board
Solder IC Base on the PCB Board and short pin-4 to pin-8 as shorted in the PCB.
Step 4: Solder 10K Resistor
Next we have to solder 10K resistor between pin-6,7 to pin-4,8 of the IC base.
Step 5: Solder 16V 470uf Capacitor
Solder 16V 470uf capacitor on the pcb board.
Solder +ve pin of capacitor to pin-2 of the IC and
-ve pin of capacitor to pin-1 of IC base.
Step 6: Solder 470 Ohm Resistor
Now solder 470 ohm resistor to pin-3.
Step 7: Solder LED
Next solder +ve leg of LED to 470 ohm resistor and
-ve leg of LED to pin-1 of the IC.
Step 8: Connect Buzzer
Solder +ve pin of buzzer to pin-3 and
-ve pin of Buzzer to pin-1 of the IC.
Step 9: Solder Metal Wire
Next solder metal wire to pin-2 of the IC.
Step 10: Solder Battery Clipper Wire
Now solder battery clipper wire to the circuit.
Solder +ve wire of Battery clipper to pin-8 of the IC and
-ve wire of Battery clipper to pin-1 of the IC as circuit diagram.
and plug in LM555 IC to it's ic base.
Step 11: Circuit Is Ready
Connect battery to the battery clipper.
Result : As you can see in the picture when I touch on the metal surface then LED is glowing and Buzzer gives sound.Like this when someone will touch on the bike then buzzer will give sound.
~ This type we can make bike security alarm circuit using LM555 IC.
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