USB Traffic Light
![100_3851.JPG](/proxy/?url=https://content.instructables.com/FM3/NC74/G8JE110R/FM3NC74G8JE110R.jpg&filename=100_3851.JPG)
*Update I have made the PCB layout for this Traffic Light*
In this instructable I will show you how to make a USB Traffic Light.
Parts
(1) LM555 Timer
(1) 10µƒ Electrolytic Capacitor
(1) 0.01µƒ Ceramic Disc Capacitor
(1) 1MΩ 1/4-watt resistor
(2) 4.7KΩ 1/4-watt resistors
(1) 1KΩ 1/4-watt resistor
(1) 10KΩ 1/4-watt resistor
(1) NPN 2N2222 Transistor
(1) USB Male Plug
The Picture of all the parts is in the next step
In this instructable I will show you how to make a USB Traffic Light.
Parts
(1) LM555 Timer
(1) 10µƒ Electrolytic Capacitor
(1) 0.01µƒ Ceramic Disc Capacitor
(1) 1MΩ 1/4-watt resistor
(2) 4.7KΩ 1/4-watt resistors
(1) 1KΩ 1/4-watt resistor
(1) 10KΩ 1/4-watt resistor
(1) NPN 2N2222 Transistor
(1) USB Male Plug
The Picture of all the parts is in the next step
Downloads
![100_3850.JPG](/proxy/?url=https://content.instructables.com/FRE/MNEA/G8JE110V/FREMNEAG8JE110V.jpg&filename=100_3850.JPG)
All the Parts.
![Picture 1.png](/proxy/?url=https://content.instructables.com/F7F/C646/G8JE1111/F7FC646G8JE1111.png&filename=Picture 1.png)
Here is the schematic. Please leave comments & rate me. Sorry, the Schematic made on word got messed up. I'll try to update it with a better one.