1/30/2012

Today we continued to work on your circuit boards.  I completed soldering all of the components that go onto the board.  I had a couple of issues while putting the board together.  A few times solder would move into holes adjacent to the one I was using.  So I had to take time to remove the solder from those holes.  Also some of the holes on the board were not spaced properly so they had to be drilled out for the parts to fit.  One hole for each of the power terminals had to be enlarged and as well as the holes for one of the diodes.  Also four holes had to be enlarged that will be used to connect an external switch to the board.  Other than those small issues the board went together well.  Next class I will be able to connect external wires and switches to the board and along with assembling the body of the robot.                           

Then LED, switch and power terminals

6 female headers plus 2 diodes added

Top View

Last female header and three resistors added

Underside of completed board

Completed board

Completed board plugged into battery.  LED lights up.