Introduction: How to Make Double LED Blinker Circuit on PCB
Today I am going to make a Project circuit of Double LED Blinker.This circuit is made by Timer IC 555.
Let's get started,
Step 1: Take All Components As Show Below
Step 2: Circuit Diagram
Connect all components according to the circuit diagram.
Step 3: Solder IC Base on the Pcb
Solder 8-Pin IC base on the PCB board.
Step 4: Connect 1K Resistor
Short pin-4 and pin-8 of the IC using jumper wire and
Next we have to connect 1K resistor to pin-7 to pin-8 of the IC as solder in the picture.
Step 5: Solder LEDs in Series
Connect two LEDs in series and connect +ve of LED to Pin-8 of the IC as given in the circuit diagram.
Step 6: Connect 220 Ohm Resistor
Next solder 220 ohm Resistor between pin-3 to -ve of LED as per circuit diagram.
Step 7: Solder Capacitor and Remain 2-LEDs
Now solder More remaining two LEDs on pcb as given in the circuit diagram and
also connect 16V 100uf capacitor.
~ Solder -ve pin of capacitor to pin-1 and +ve pin of capacitor to pin-2 of the IC as circuit diagram.
~ Also Short pin-2 and pin-6.
Step 8: Solder 10K Resistor
Next we have to solder 10K resistor between pin-6 to pin-7.
Step 9: Connect Battery Clipper Wire
Now connect Battery clipper wire to the circuit.
Solder +ve wire of battery clipper to pin-8 of IC and
solder -ve pin of battery clipper to pin-1 of the 555 IC.
Step 10: Circuit Is Completed
Now our circuit is completed so connect battery to the battery clipper and now you can see the LEDs are blinking.
Step 11: Result
Result - As you can see in the picture LEDs are started blinking.
LEDs are blinking with 1/2 second timing to each other.
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