Information for V1 timer boards

Here is a picture of the bare board and a completed board for reference.

In order to complete the project you will need to add the following components:

You may not need the resistors OR the 5 volt power supply if your computer has built-in pull-up resistors. Unfortunately there is no real way to know if your computer has the built-in resistors. Some do, some don't. If your computer does not have pull-up resistors your timer may operate erratically or it may give sluggish results.

Assembly Instructions

Refer to the completed board photo as necessary: