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And something else, which we'll start with before trying to regulate our traffic.

We'll use LEDs (Light Emitting Diode): 1 red, 1 yellow and... ?!?!
yes, 1 green.

In the first part every LED will be gradually turned from off to on and viceversa.

After that, the traffic lights:  just one LED on.

We need following stuff:
...continue reading "Manual and Automatic Traffic Lights"