How to Build a Laser

How to Build a LASER

Materials: LASER from an old computer, 2 AA batteries, AA battery holder, wires, a solder gun, and an Altoids box

Step one: solder the black and red wires to the metal parts by the spring on the battery holder.

 

Step 2: solder the end of the red wire from the LASER to the end of the other red wire you just soldered to the battery holder.

step 3: cut a hole in the corner of the “lid,” then glue a switch in it.

Step 4: solder the black wire connected to the spring to the “stick” on the right of the switch

Step 5: solder the blue wire coming from the LASER to the middle stick on the switch

Step 6: tape or glue the battery holder to the bottom