TRAFFIC LIGHT
We have developed two traffic light modules with color display and also a display for displaying numbers. Many times we require traffic lights for our projects, and here we have two traffic light modules to scale both to see the change colors and the change of number already depends on each one how to carry them out with digital electronics or arduino pic programming, etc.
Supplies
SCHEMATIC DIAGRAM
Here we will see the schematic diagram of the two modules so that you can also do it yourself.
TRAFFIC LIGHT DESCRIPTION
Traffic lights, also known as traffic control signals, are signaling devices that are placed at road intersections and other locations to regulate traffic, and thus pedestrian traffic. The first traffic light, designed by John Peake Knight, was installed in London in 1868
FUNCTIONING
The operation is basic, we only have to use positive or negative pulses for the case of color changes that have GND as a common point, that is, they have to receive positive pulses to activate or activate some color or make color and number changes of the display, these two need to be synchronized to carry out our project.
The programming of the numbers can be done in many ways: digital electronics, microcontroller, Arduino, etc.
We will use common anode display, that is to say that to activate the segments and visualize the numbers we have to have negative pulses and thus control the display for 7 sec.
TRAFFIC LIGHT MODULES
Here we will see the PCB finish of the 2 modules, both pedestrian and road
ELECTRONIC COMPONENTS
· 4 DISPLAYS 7 SEC COMMON ANODE
· 2 LED DIODES 10MM RED
· 2 LED DIODES 10MM GREEN
· 1 LED DIODE 10MM YELLOW
· 4 RESISTORS SMD 1206 560ohm
· 5 RESISTORS SMD 1206 220ohm
· 1 BLADE WITH 40 PINS
· 2 PCBS (1 PEDESTRIAN-1 ROAD)
FEATURES
· VIN 5VDC
· DIFFERENT WAYS TO PROGRAM (pic, arduino, etc)
· IMAX 150mA
· Traffic light with change of colors and numbering
EASYEDA
Here we will see the tracks and 3D image in which we designed our PCB.
JLCPCB
Once the pcb is designed, we will send our friends from JLCPCB to manufacture our PCB.
5pcbs only $2
JLCPCB number 1 PCB manufacturing company worldwide professional pcbs and excellent finish.
GERBER PCB:
https://mega.nz/file/fI5HkBIB#1g2SbVJC075UlE8alyWgFpBvoEHCGnemqyxnR2RoxYw
https://mega.nz/file/HAIGnCrB#cP1vhau5GPw45KreEUjZma9M1MXgDk5tLkzcx85l6sg
you can get your pcbs in different sizes and colors.