If I am building a project that requires computer control, my first inclination is to reach for a Sparkfun Pro Micro 5V, 16 MHz system on a board. The problem comes in when I have other circuits connected to the input power node. That is when the design defect produces unintended behaviors. Here is a way to correct this design defect without the use of surface mount tools.
If you are interested, please see
Your comments are welcome. All of us are smarter than any one of us.