Smart traffic lights (ESP8266 + Raspberry Pi)

ESP8266 sensor nodes at each approach report vehicle presence over Wi-Fi to a Raspberry Pi controller per intersection; the two Pis talk to each other so each one's timing accounts for the other's queue. A companion demo counts vehicles per approach with YOLOv8 and adjusts LED signal timing live. A simulation harness allows a thousand scenarios in an afternoon before touching the boards.

What it does

• ESP8266 nodes, Pi controllers, Pi-to-Pi coordination
• Modular hardware abstraction and GPIO test scripts
• Dual-intersection simulation mode
• YOLOv8 vehicle density → LED timing demo

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