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Step 4Build the circuit.
With your hot glue gun, put a drop of glue on an unused popsicle stick. Quickly and carefully glue two adjacent popsicle sticks together so that no glue interferes with your carved trough or can be seen on the surface of the frame. Do this with all of the popsicle sticks of the first layer.
Cut a piece of copper foil about the size of the big square cut for the coin battery. Leave a thin strip of copper running an inch off one side of the squares. Glue this into place with the thin strip of copper running up the trough of the popsicle stick towards where the switch will be.
Once this is done, carefully insert LEDs into each of the four holes that you carved for them. Make sure you insert them in the same direction so that on one side are all the ground leads and the other all the power leads. Make sure they all work and then bend the leads ninety degrees in the same direction so that the leads from each respective LED touch the leads coming out of the one next to it.
Trim the leads as appropriate and then solder them all together. Repeat the same action with the LEDs on the other side of the frame.
Connect both LED chains with wires which will be hidden in the trough carved in one of the short sticks.
Next you will attach the switch. Solder one wire from one of the edge pins to the thin copper strip sticking off the square you glued down earlier. Solder the middle pin to a wire connected to the positive side of the LED (i.e. the longer leg of the LED... the one that connects to plus...) Glue the switch in place at the edge of the frame with a small drop.
Find the ground leg of the LED closest to the copper tab. To this will be attached a short wire connected to yet another small copper tab. This small copper tab will be touching the ground side of the coin cell battery. The other copper tab will be touching the plus side of the coin cell battery.
Hold the battery in place, flick the switch and see if you can turn it on and off.
Cut a piece of copper foil about the size of the big square cut for the coin battery. Leave a thin strip of copper running an inch off one side of the squares. Glue this into place with the thin strip of copper running up the trough of the popsicle stick towards where the switch will be.
Once this is done, carefully insert LEDs into each of the four holes that you carved for them. Make sure you insert them in the same direction so that on one side are all the ground leads and the other all the power leads. Make sure they all work and then bend the leads ninety degrees in the same direction so that the leads from each respective LED touch the leads coming out of the one next to it.
Trim the leads as appropriate and then solder them all together. Repeat the same action with the LEDs on the other side of the frame.
Connect both LED chains with wires which will be hidden in the trough carved in one of the short sticks.
Next you will attach the switch. Solder one wire from one of the edge pins to the thin copper strip sticking off the square you glued down earlier. Solder the middle pin to a wire connected to the positive side of the LED (i.e. the longer leg of the LED... the one that connects to plus...) Glue the switch in place at the edge of the frame with a small drop.
Find the ground leg of the LED closest to the copper tab. To this will be attached a short wire connected to yet another small copper tab. This small copper tab will be touching the ground side of the coin cell battery. The other copper tab will be touching the plus side of the coin cell battery.
Hold the battery in place, flick the switch and see if you can turn it on and off.
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