I have built a project using arduino uno. Please check the attach files for details about this project. I have attached the current project schematic and project details. I want to add four pedestrian switches to this existing circuit and also something like human machine interface(to change traffic light time not from code but using LCD and keypad. )
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I have working with Arduino projects the last three years. The type of work described by you is within my skills. I am very interested to assist you in your development needs.