Traffic Light Electronics Project with 555 Timers - TRAFFIC-555-KIT
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This is a simple light-traffic simulating project using two 555 timer IC's, a couple capacitors, a few resistors, and LED's.
Electrical schematic image courtesy of 555-timer-circuits.com. More details on the build can be found on their website traffic light circuit project.
Thanks to Youtube user CiprianWiner for sharing this video demonstrating the functioning circuit. Note you can change the speed of the blinking by adjusting the capacitors.
2 PC 25V 100UF RADIAL CAPACITOR
2 PC 555 TIMER
1 PC L934HD 3MM LED RED-DIFFUSED
1 PC L934GD 3MM LED GREED-DIFFUSED
1 PC 3MM LED YELLOW-DIFFUSED
2 PC RA220 1/4W 5% 220 OHM CF RESISTOR
1 PC RA100K 1/4W 5% 100K OHM CF RESISTOR
1 PC RA47K 1/4W 5% 47K OHM CF RESISTOR
1 PC RA470 1/4W 5% 470 OHM CF RESISTOR
Note: Breadboard, jumper wires, and power supply not included.