Step 1: Go Get Stuff
- (x4) Paint storage cups
- (x3) 1" round mirrors
- Project Enclosure (7x5x3") (Model: 270-1807 | Catalog #: 270-1807)
- (x3) 1.5-3VDC Metal Gear Motor (Model: 273-258 | Catalog #: 273-258)
- (x3) 25-Ohm 3-Watt Rheostat (Model: 271-265 | Catalog #: 271-265)
- Pen-Style Laser Pointer (No model information available | Catalog #: 63-1064)
- DPDT Submini Toggle Switch (Model: 275-614 | Catalog #: 275-614)
- Enclosed 2 "AA" Battery Holder (Model: 270-408 | Catalog #: 270-408)
- 2 "AAA" Battery Holder (Model: 270-398 | Catalog #: 270-398)
- (x3) Hexagonal Control Knob with Aluminum Insert (Model: 274-415 | Catalog #: 274-415)
- Enercell® "AA" Alkaline Batteries (4-Pack) (Model: AA-4PK | Catalog #: 23-849)
- Enercell® "AAA" Alkaline Batteries (4-Pack) (Model: AAA 4-PK | Catalog #: 23-850)
- Assorted short zip ties
Step 2: Mark
Repeat for the remaining two pairs of motors and cups.
Step 3: Drill
Step 4: Zip Tie
Step 5: Attach Mirrors
Step 6: Attach Wires
Step 7: Insert
Step 8: Take Apart
Step 9: Wires
Carefully solder a 6" black wire to the right terminal of a small surface mount component (assuming the two surface mount transistors are pointing up) on the side of the board opposite the switch to bypass having to press the switch to activate the laser.
Step 10: Pots
Solder the red motor wires to the center terminals of each potentiometer, such that it is one motor to one potentiometer.
Step 11: Switch
Next, solder the three free red wires from the potentiometers to one of the outer pins adjacent to the red wire from the AA battery holder.
Finally, solder the red wire from the laser adjacent to the red wires from the potentiometers.
Step 12: Ground Wires
Solder the black wires from the motors to the black wire from the AA battery holder.
Step 13: Cut
Step 14: Drill
Drill through these marks with a 3/8" drill bit.
Consider making secondary 1/8" holes for the potentiometer mounting tab roughly 3/16" to the left of each hole. These will allow the potentiometer to lay flat and keep it from spinning once mounted in the case.
Step 15: Mount
Step 16: Batteries
Step 17: Switch
Mount the power switch into this hole.
Step 18: Position and Glue
Position it inside the case such that is will bounce off all three mirrors and then pass through the section of the casing that you have cut away.
Once you are happy with its position, glue the cup in place inside the casing.
Step 19: Fine Tune
If it is hitting the side walls of the case, you may want to consider widening the hole.
Step 20: Clean It Up
Secure the battery holders inside of the case.