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This week we are going to design a PCB that will implement a two LED flasher using a 9volt supply. Download and install the "Express PCB" design program. ***Here is what our robot board looks like: 
Below is the circuit for your board design. Place the LED's at the top of your design, the 555 timer in the middle and the +/- 9volt leads on the side. All other component placement is up to you... 
*** Don't be confused, the above picture is a circuit diagram. It's easy to read and logically correct but you must use the correct 555 timer pin-out shown here:
*** This circuit was taken from the web site: "http://wild-bohemian.com/electronics/flasher.html"
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