I learned how to solder through-hole and surface-mount from my boss in the ECpE Department at ISU. He showed me the techniques it takes to avoid cold joints and how to use flux correctly. Over summer 2013, I practiced on some simple projects such as a memory game, a digital die, and a surface-mount Blinky (when quickly moved, flickers patterns and text).
Frequency Divider
This circuit takes in simple high and neutral signals from the audio jack and divides the low, medium, and high frequencies. The breadboard needs just 9 volts to power up.