Today I am going to make a fire alarm circuit using 555 timer IC.This circuit is very easy to make fire alarm circuit.
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Step 1: Take All Components As Shown Below
Step 2: 555 Ic Pinouts
This picture show the pinouts of timer ic 555.
Step 3: Connect Buzzer
firstly we have to connect buzzer.
Connect +ve pin of buzzer to pin-3 of 555 ic and
Connect -ve pin of buzzer to pin-1 of ic.
Step 4: Make Spring of Copper Wire
Next we have to make spring of copper wire as shown in the picture.
Step 5: Solder Copper Wire
Next connect copper wire to pin-2 of the ic.
Step 6: Connect Pin-4 and Pin-8
Next connect pin-4 and pin-8 of the ic as solder in the picture.
And also connect a wire on pin-6.
Step 7: Solder Battery Clipper Wire
Now connect battery clipper wire.
Connect +ve of battery clipper to pin-8 and -ve of battery clipper to pin-1 of the ic as you can see in the picture.
Step 8: HOW TO USE IT
Connect battery to the Battery clipper and burn fire near the copper wire as shown in the picture.
NOTE : Touch on the pin-6 of IC to turn off the sound.