USB Traffic Light
Intro: USB Traffic Light
*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
STEP 1:
All the Parts.
STEP 2:
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.
6 Comments
PaulMakesThings 13 years ago
Mr_Electric 13 years ago
Mr_Electric 14 years ago
Mr_Electric 14 years ago
lemonie 14 years ago
At what frequency?
When I was a kid I had one of those electronics kits, the traffic light experiment had 3 bulbs and 3 switches...
L
Bongmaster 14 years ago
kool use of a 555 tho :3 i got a few to mess with :P