Timed Traffic Light PCB Josh Angell June 1, 2011 IME 458.

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Presentation transcript:

Timed Traffic Light PCB Josh Angell June 1, 2011 IME 458

Overview Function: Emulates UK Traffic Light Requirements: Timing Counting Correct Sequence

Timing 555 Timer IC Generates pulses with specific frequency Adjustable with Potentiometer (R2 below) Provides pulses to counter IC

Counting 4017 Counter IC Decade counter LEDs connected to IC

Schematic

PCB Layout

Assembly All components through-hole Soldered to board Components arranged for alignment and ease of assembly

Functioning Device