Model Traffic Lights Circuit | 555 Timer Project #15
A tutorial on how to make a model traffic lights circuit using 2 555 timer IC's and a few other electronics components. This circuit turns ON green LED, keeps it ON for some time, then turns ON yellow LED for a moment and finally turns ON red LED for almost the same duration as the green LED. This cycle again starts from green LED.
Explanation of how this circuit works is also included in the video.
Today I am going to make a circuit of traffic light.This circuit I will make using BC547 Transistors.
As pins are folded in the picture like we have to fold.
Solder +ve legs of Both Red LED to Collector pin of a Transistor.
Solder +ve legs of Both Green LEDs to Collector pin of 2nd Transistor.
Solder +ve legs of Both Yellow LED to Collector pin of 3rd Transistor as solder in the picture.
Next we have to connect emitter pins of all transistors and -ve legs of all LEDs (Red, Green and Yellow) to each other as you can see in the picture.
Next Connect 1K resistors to the Collector pins of all transistors as soldered in the picture.
Next solder 100K resistors to the Base pin of Green and Red LED Transistor as you can see in the picture.
Solder 33K resistor to the Base pin of Yellow LED Transistor as solder in picture.
Next we have to solder Out wires of all resistors as you can see in the picture.
Next solder +ve pin of 100uf capacitor to Base pin of Yellow LED Transistor and Solder -ve pin to Collector pin of Red LED Transistor as you can see in the picture.
[Capacitor 1] - Next connect +ve pin of 470uf capacitor to Base pin of Green LED and solder -ve pin to Collector pin of Yellow LED as solder in the picture.
[Capacitor 2] - Solder -ve pin of 2nd 470uf capacitor to Collector pin of Green LED Transistor.
Solder +ve pin of 2nd 470uf Capacitor to Base Pin of Red LED Transistor using a wire as you can see in the picture.
Solder +ve wire of battery clipper to Out wires of all resistors and -ve wire to common emitter pins of transistors and -ve legs of LEDs as connected in the picture.
Now circuit is completed so connect Battery to battery clipper and see the Traffic Light how it is glowing.
NOTE: We can Increase/Decrease the timing of Red, Green and Yellow wire glowing by changing the values of capacitors.
Glowing of Traffic light I tried to show in the above pictures.
Model Traffic Lights Circuit | 555 Timer Project #15
A tutorial on how to make a model traffic lights circuit using 2 555 timer IC's and a few other electronics components. This circuit turns ON green LED, keeps it ON for some time, then turns ON yellow LED for a moment and finally turns ON red LED for almost the same duration as the green LED. This cycle again starts from green LED.
Explanation of how this circuit works is also included in the video.
Today I am going to make a circuit of traffic light.This circuit I will make using BC547 Transistors.
As pins are folded in the picture like we have to fold.
Solder +ve legs of Both Red LED to Collector pin of a Transistor.
Solder +ve legs of Both Green LEDs to Collector pin of 2nd Transistor.
Solder +ve legs of Both Yellow LED to Collector pin of 3rd Transistor as solder in the picture.
Next we have to connect emitter pins of all transistors and -ve legs of all LEDs (Red, Green and Yellow) to each other as you can see in the picture.
Next Connect 1K resistors to the Collector pins of all transistors as soldered in the picture.
Next solder 100K resistors to the Base pin of Green and Red LED Transistor as you can see in the picture.
Solder 33K resistor to the Base pin of Yellow LED Transistor as solder in picture.
Next we have to solder Out wires of all resistors as you can see in the picture.
Next solder +ve pin of 100uf capacitor to Base pin of Yellow LED Transistor and Solder -ve pin to Collector pin of Red LED Transistor as you can see in the picture.
[Capacitor 1] - Next connect +ve pin of 470uf capacitor to Base pin of Green LED and solder -ve pin to Collector pin of Yellow LED as solder in the picture.
[Capacitor 2] - Solder -ve pin of 2nd 470uf capacitor to Collector pin of Green LED Transistor.
Solder +ve pin of 2nd 470uf Capacitor to Base Pin of Red LED Transistor using a wire as you can see in the picture.
Solder +ve wire of battery clipper to Out wires of all resistors and -ve wire to common emitter pins of transistors and -ve legs of LEDs as connected in the picture.
Now circuit is completed so connect Battery to battery clipper and see the Traffic Light how it is glowing.
NOTE: We can Increase/Decrease the timing of Red, Green and Yellow wire glowing by changing the values of capacitors.
Glowing of Traffic light I tried to show in the above pictures.
No comments:
Post a Comment