Now that you know how to solder components, it's time to learn how to troubleshoot when something goes wrong.
Time to Troubleshoot
Visually check the back of your board to make sure that all your solder joints are good, that there no solder bridges or other errors that could affect the conductivity of the circuit. Re-wet any cold joints, joints with insufficient wetting, or joints with not enough solder.
Check to see that your components are all in the correct places and that none of your components are in backwards.
If your board still isn't working, run a conductivity test to zero in on the problem area. Watch the video below to know how to use a multimeter in order to check the voltage as well as connections.
If it still does not work, ask for help!
(Many thanks to Colin and the Makezine guys for their expertise and videos!)
Finishing the Course
Look! Some snowy dogs have dropped by to congratulate you on finishing the course. They also want to remind you to tin your solder tip and clean up your work space before you leave. Oh, and to do that survey stuff, too.