Breadboarding

Here is a breadboard. Every pin in the same row is electrically connected but rows themselves are not connected. The picture below shows which pins are linked. The vertical columns on the edges of the board are also linked. These are usually used for power and ground.

Next, we're going to connect the teensyduino to give our breadboard power and ground. Place the teensyduino inbetween the center rail so that each side is connected to separate parts of the breadboard. Next strip some wire to connect the 5 volts pin of the teensyduino to the red vertical column. Convention usually uses the red for power and blue/black for ground. Also connect the two vertical columns of the breadboard together as seen on the lower part of the image.

We are now going to turn on an LED with a switch. The LED must be connected to a resistor and power/ground to complete the circuit. The resistor is there to prevent the LED from burning out. The switch links both rows together when pressed and allows current to flow.

For our last breadboarding project, we are going to make a circuit that increases the output through an led based on the light levels of a phototransistor.