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Step 6Assemble LED Circuit
The total LED circuit is composed of four identically constructed circuits. First, assemble the four individual circuits. Then, wire them together to form the completed LED circuit.
1) Cut Radioshack circuit board in half. The Radioshack circuit board is not symmetric, so both sides cannot be used in the same project. The half to be used is 8holes x 25holes (shown in pictures below). To cut the board in half, score both sides of the the board with the utility knife along the terminal strip that runs length wise on the side of the board that is to be discarded. Use the edge of a table to break the board along the scored line. Then, use a Dremel high-speed rotary tool to grind the edge flush to the remaining lengthwise terminal strip.
2) Trim sides of board. In order to maintain an even distance between the LED’s the short sides of the board need to be trimmed. With a utility knife, score both sides of the board along a line parallel to the edge that intersects the center of the mounting hole. Use two pliers to break off the unwanted edge.
3) Solder resistors in place. Bend the Leads so that they will fit between the locations shown in the CAD model pictured below. Place the resisters in their respective positions as indicated, solder in place, and trim the leads.
4) Solder jumper wires in place. Cut to length and strip the insulation from the ends of the 22AWG solid copper wire. Solder in place bridging specified nodes. Trim extended leads.
5) Solder LED’s in place. Place LED’s in correct position observing the correct polarity of the diode. The names of the leads are indicated in a picture below. Solder in place maintaining the vertical axis of the LED perpendicular to the top of the circuit board. Trim extended leads.
6) Join Subassemblies. Cut to length and strip the insulation from the ends of the 22AWG solid copper wire. Solder in place bridging specified nodes. Trim extended leads.
1) Cut Radioshack circuit board in half. The Radioshack circuit board is not symmetric, so both sides cannot be used in the same project. The half to be used is 8holes x 25holes (shown in pictures below). To cut the board in half, score both sides of the the board with the utility knife along the terminal strip that runs length wise on the side of the board that is to be discarded. Use the edge of a table to break the board along the scored line. Then, use a Dremel high-speed rotary tool to grind the edge flush to the remaining lengthwise terminal strip.
2) Trim sides of board. In order to maintain an even distance between the LED’s the short sides of the board need to be trimmed. With a utility knife, score both sides of the board along a line parallel to the edge that intersects the center of the mounting hole. Use two pliers to break off the unwanted edge.
3) Solder resistors in place. Bend the Leads so that they will fit between the locations shown in the CAD model pictured below. Place the resisters in their respective positions as indicated, solder in place, and trim the leads.
4) Solder jumper wires in place. Cut to length and strip the insulation from the ends of the 22AWG solid copper wire. Solder in place bridging specified nodes. Trim extended leads.
5) Solder LED’s in place. Place LED’s in correct position observing the correct polarity of the diode. The names of the leads are indicated in a picture below. Solder in place maintaining the vertical axis of the LED perpendicular to the top of the circuit board. Trim extended leads.
6) Join Subassemblies. Cut to length and strip the insulation from the ends of the 22AWG solid copper wire. Solder in place bridging specified nodes. Trim extended leads.
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