To get our attention, your traffic light is going to need to have a unique hook. So how did [Ronald Diaz] manage to get his project to stand ... recreated in his Arduino code.

[Rockwell] sent us an update on his traffic light hacking ... control of the hardware over to an Arduino. Instead of building the board into the project he’s included just the parts he needs ...

Moreover, the Rx/Tx lines are brought out to a separate 4-pin female header along with 3.3V and GND for connecting a 4-pin 3.3V Bluetooth ... project (good for a novice) using the Funduino Joystick ...