Traffic light + Buzzer for blind by pscheimann

buzzer that is faster when blind person can cross over

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<iframe style="height: 510px; width: 100%; margin: 10px 0 10px;" allowTransparency="true" src="https://codebender.cc/embed/sketch:339375" frameborder="0"></iframe>

Embed The Serial Monitor

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<iframe style="height: 510px; width: 100%; margin: 10px 0 10px;" allowTransparency="true" src="https://codebender.cc/embed/serialmonitor" frameborder="0"></iframe>