Make your own Traffic Light on PCB - NE555 + CD4017 

■ JLCPCB Prototype for $2(Any Color): jlcpcb.com
This circuit simulates the operation of a Traffic Light and works thanks to two ICs: NE555 and CD4017. The NE555 acts as a timer, while the CD4017 is used to drive the three LEDs. The signal generated by NE555 is sent to CD4017 which regulates the operation of the three LEDs. The pins 1,5,6,9,10,11,12 are the outputs for the LEDs, pins 2,3,4,7 are unused. The "Traffic Light" effect is possible thanks to the combination of diodes 1N4148 which manage the switching on time of each of the three LEDs. Finally I added a LED to indicate the presence of power, and a second LED to indicate the presence of the signal generated by the NE555.
After trying the excellent service offered by JLCPCB I recommend it, the quality of the circuits is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier.
JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 10 PCB Boards for 2 Dollars.
JLCPCB is the largest PCB prototype enterprise and a High-Tech manufacturer specializing in quick PCB prototype and small batch PCB production. With over 12 years of experience in PCB manufacturing, has more than 400,000 customers, with over 10,000 online orders of PCB a day. Customer service is one of the best in the world, so feel free to upload your Gerber files for file review before completely submitting your order.
More About JLCPCB: support.jlcpcb...
Components:
1x NE555 IC
1x CD4017 IC
1x LED red 10 mm
1x LED yellow 10 mm
1x LED green 10 mm
1x LED red 3 mm
1x LED green 3 mm
5x 1KΩ Resistors
1x 10KΩ Resistor
2x 22KΩ Resistors
1x 100KΩ Resistor
1x 47uF Electrolytic Capacitor
1x 1nF Capacitor
1x 10nF Capacitor
6x 1N4148 Diode
PCB Board (Gerber ready for JLCPCB): goo.gl/E7aqrk
*Don't use my PCB for profit or sponsored videos.
This circuit must be powered with 9V DC, below I leave the references to view: the electronic circuit diagram, the PCB and the Gerber file to be uploaded directly on the JLCPCB website.
Circuit Diagram: 7:38
PCB (Printed Circuit Board): 7:45 (FRONT) - 7:50 (BACK)
Gerber Files (Ready for jlcpcb.com): goo.gl/E7aqrk
*You can see the complete procedure to upload the Gerber file on jlcpcb.com in the video from 2:35
**JLCPCB have a Technical Support for exporting Gerber files from many software at this link: support.jlcpcb...
For any other questions you can ask me for explanations in the video comments:)
Music:
Devotion by Vexento (Circuit Explanations)
Iron Man theme (Intro JLCPCB)
WARNING: This video is only for demonstration. I don't take any responsibility for damage to things, people and animals.
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