Setting up a breadboard for 5V is easy. Here are the parts you will need:

a breadboard
a 12 volt power supply
a power connector
a toggle switch
a 7805 voltage regulator
a 10 uf capacitor
a 1 uf capacitor
one LED
one 220 ohm resistor
some red wire
some black wire




This is what the breadboard will look like when you are finnished - following are the complete steps as really big pictures.







Step One: connect your power supply/connector to the board. Holding the board
as seen in the image, to the right of the blue and red lines, place the red wire of your power in the upper left of the board and the black directly below.







Step Two: The switch. Over the center of the board, in the top row, connect one wire to the board so that it is directly to the right of the red wire. Connect the other wire of your toggle switch, to the hole directly across the center.






Step Three: Connect the ends of a small black wire in the holes directly below the switch wires.






Step Four: Take the 10uf capacitor and find the long leg. The long leg (power) connects to the top row Directly to the right of the switch. The short Leg (ground) connects directly to the right of the black wire.






Step Five: The 7805 voltage regulator. Holding the 7805 so that the printed side faces the left and the exposed metal is to the right, the top pin connects to the top row in line with the long leg of the capacitor. This pin is an intput. The two legs below will go into their respective holes. The center pin is in line with the short leg of the 10uf capacitor (ground). This pin is an input and an output. The bottom most pin has it's own row. This pin is an output.






Step Six: Starting with the center pin of the 7805, connect a small black wire to the row on the side labled with a blue line. Ground is available in this column.






Step Seven: From the bottom pin of the 7805 connect a wire that runs to the row on the side labled with a red line. Power is available in this column.






Step Eight: Find the long leg(power) of the 1uf capacitor and connect it to the to the top of the column marked with the red line(power). Find the short leg(ground) and connect it to the column marked with the blue line(ground)






Step Nine: At the other end of the board, connect a short red wire between the bottom of the red column(power) and the bottom right row.






Step Ten: Find the long leg of the LED and connect it in line with the red wire. Connect the short leg(ground) of the LED to the bottom row across the center.






Step Eleven: Using the 220 ohm resistor, connect the bottom left row with the column labled with a blue line(ground). This component has no special legs.






Step Twelve: Take a black wire that is a little longer than the width of the board and connect the column labled with a blue line(ground) to the other column labled with a blue line(ground).






Step Thirteen: Take a red wire that is a little longer than the width of the board and connect the column labled with a red line(Power) to the other column labled with a red line(Power).






This is it: Connect your 12V Power supply to the board. Toggle the switch and the LED will light. Congradulations.