We continue our series on copper tape circuits with a parallel circuit. With a parallel circuit, the LED lights even if you only have one switch closed. I'm using a one-inch faster, which are easier to find, if less graceful looking, than the smaller fasteners used for the knob switch.
Step 1: Tools and Materials
- Scissors or Craft Knife
- Slug and snail tape cut into quarter inch widths
- Brass fasteners x2
- Card stock or index cards
Step 2: Sketch your circuit
I like to sketch out the circuit first. This gives me an idea of how all the components fit together. It also allows me to walk through the circuit, sometimes I will actually trace the circuit with my finger.
Step 3: Cover your traces
I apply copper tape even to places where there is a component. You can also leave the component spaces open.
Step 4: Cut out space for components
Using a scissor blade or the craft knife blade, cut open the spaces where your components will be. Lift the tape off with a blade corner or just use your fingers.
Step 5: Connect components
Apply copper tape to the LED and battery leads, securing them to the copper traces. Remember that the positive ends of the battery and LED should meet. The side of the battery with the plus sign should connect directly to the long lead of the LED.
Step 6: Add the switches
Make a starter hole with your knife, scissors, or even a paper clip. Push the fastener through the hole and flatten the lengths so they make contact with the adjacent copper tape.
Step 7: Check your connections
Complete the circuit and see that your LED lights. Sometimes all you need to do is tighten the connections if the LED doesn't light at first.