#27 · LED traffic light
Tutorial goals
- Control LED traffic light
- Code optimization
- Functions for more code structure
Components needed
- 1× Arduino
- 4× Jumper wire (male-male)
- 4× Jumper wire (male-female)
- 1× LED traffic light
Buy components
- $ 7.35 Arduino Uno (clone) with cable
- $ 12.77 Arduino Uno (clone)
- $ 25.97 Arduino Uno SMD (original)
- $ 27.31 Arduino Uno Chip (original)
- $ 0.52 Jumper wire assortment (MM/MF/FF)
- $ 0.52 Jumper wire male-male
- $ 3.27 Jumper wire male-male
- $ 0.52 Jumper wire male-female
- $ 2.61 Jumper wire male-female
- $ 0.52 LED traffic light
- $ 2.44 LED traffic light
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All products shown are not being sold by Bas on Tech.
A LED traffic light is a nice component where you can easily control three different LEDs. There is no need for additional resistors since the PCB already uses SMD resistors.
Beside explaining the circuit, I'll also explain how you can improve the structure of your code by using functions.
A challenge could be to control multiple traffic lights from a single Arduino. This way you can create your own crossing with sensors and control the traffic lights.
