Crosswalk Traffic Light - Arduino Housing (Pole, Base & Pedestrian Covers)

What is this

A 3D printed housing for a fully working crosswalk traffic light controller built with an Arduino Uno, LEDs and push buttons on a breadboard.

Each pole contains three sections: car traffic light (top), pedestrian light (mid-height) and push button housing (base). Wires run through the inside of the pole and exit at the base.

Print 2 sets for a complete crosswalk.

What's included (per pole)

• Pole: car lights, pedestrian lights and button housing in a single piece

• Pedestrian light covers: walk and stop signs that go over the pedestrian LEDs

• Base with JST XH connectors: clean separation between pole and wiring

• (alternative included on STL files) Base simple: plain hole for wires, no connectors needed

Tip: print the pedestrian covers in white or a light color, the LED needs to shine through. If you have a multicolor printer, printing only the sign drawing in white gives a great result.

Electronics required

Per pole:

• Red LED × 2, Yellow LED × 1, Green LED × 2

• 220Ω resistors × 5

• Tactile push button × 1

• Jumper wires (colour-coded recommended): red, yellow, green for LEDs; black for GND; blue for buttons

Shared between both poles:

• Arduino Uno R3 (we used Elegoo Uno R3)

• Breadboard

Optional (for clean wire separation):

• JST XH 4-pin housing + receptacle × 1 per pole

• JST XH 3-pin housing + receptacle × 1 per pole

Code and guide

Electronics code and full wiring reference on GitHub:
github.com/MitsuMira/maker-projects

Full assembly guide with wiring diagram and step-by-step instructions:
mitsumira.com/proyectos/semaforo/

Print settings

• Material: PLA

• Layer height: 0.2 mm

• Infill: 8%

• Supports: no

• Colors: black (pole and base), yellow (button and light housings), white (pedestrian covers)

Printed on: Snapmaker U1

Designed and tested by MitsuMira in Barcelona.