Robot with a real laser gun

thingiverse

Probably the most elaborate and pointless laser pointer you can find - a robot with a laser gun that features a real laser diode inside. Features include: Real laser Momentary laser activation button on top of the head Non-momentary switch on back of the head Tripod screw connector in right knee Model was designed with SketchUp, STL files fixed with Microsoft 3D builder, sliced with Cura and printed on my Robo3D R1+ Required parts: A 44 AA battery box, make sure it's not bigger than 63x59mm, I got mine from AliExpress "Battery Box Slot Holder Case for 4 Packs Standard AA 2A Batteries Stack 6V" A laser diode, 6mm size, get one that's good for a laser pointer not for cutting things, I got mine from AliExpress "650nm 6mm DC 5V 5mW Mini Laser Dot-shaped Diode Module WL Red Copper Head Tube" A 6x6x10 or 6x6x8 push button, I got mine from an old toy A slide switch, internal size 8x15mm, total length 25mm, knob width no more than 8mm, pitch no more than 10mm, knob height at least 4mm, I got mine from an old toy A resistor - you need to match the resistor to your diode, using the wrong resistor can damage the diode or make the laser dangerous 1/4 Inch Hex Nut One or two short 2mm diameter screws Some thin electrical wires Printing: The body print on its back includes built-in support, auto-generated support will make assembling the model harder. The right leg print front of the leg down (with both foot and knee touching build plate), this file requires support everywhere. The left leg print with flat side (back of the leg) down, this part needs support touching buildplate, support everywhere also works. The head lid print with rectangular flat side down, no support needed but shouldn't be a problem. The battery lid print with big flat side down, support not needed but shouldn't be a problem. Assembly: Start with the body, cut out two small pieces holding shoulders, four columns connecting back of gun to robot body and two boxes inside battery compartment on back. Insert two wires (one for + and one for -, use two different colors, red and black work well) to hole in back battery compartment that leads to right shoulder, there's an hole below elbow and another at bottom of hands to help route wires, push/pull wires all the way through arm and out of barrel of gun on front. Cut wires connected to laser diode at different lengths, solder shorter one to corresponding wire that comes out of barrel. Solder longer one to one side of resistor, solder other side of resistor to other wire. Carefully pull wires back until laser diode is inside barrel. Take two more wires and solder to two sides of slide switch, then two more to two sides of push button. Insert slide switch into hole at bottom back of head, insert wires into neck. Put push button on little bean at top of head, also insert wires into neck, leave some extra, you will need them when you place head lid. Solder one of the switch wire, one of the button wires and battery + wire together. Solder other switch wire and other button wire to + wire going to diode. Solder - wire going to diode to battery - wire. Now it's time to test everything works. Push battery box into hole on back, all wires should go into little recessed area on right, use 2mm screws to secure battery box to body. Use head lid to close back of head, first insert push button into lid, then slide lid forward. Insert hex nut into smaller hole on back of right knee. Clean supports from right leg and push it into two holes in right knee. Clean supports from left leg and push it into one hole in left knee. And now all that's left is to push battery lid into position, little bit that sticks out is at top. And that is it, you now have a real laser shooting robot.