This project shows you how to make Robotic DEAL WITH IT glasses. Included in this project is a 3D printed mount which will make a linear actuator if combined with cheap robotic rack and pinion parts.

Start by downloading the mount here:

https://www.thingiverse.com/thing:3946361

Supplies

Required:

Standard size micro servos: https://amzn.to/2BWgEdu

Rack and pinion kit: https://amzn.to/2WpTwNK

Deal with it glasses: https://amzn.to/2BZLmlZ

Optional:

Micro screws: https://amzn.to/2WpTwNK

Servo tester: https://amzn.to/2WpTwNK

For powering the servo, you'll need a 4 AA battery holder: https://amzn.to/2NsgcsF

Or, cut a USB cable and solder the red and black pins to female jumper wire: https://amzn.to/2pyQI4X

Step 1: 3D Print the Mount

3D Print this mount, or have it printed at shapeways or other service. It needs supports and can be printed using its current orientation (with the 'U's of the pinion arms facing up). I used PLA to print it, and then broke off the supports.

Place the micro servo in the mount and use the two provided holes to screw the servo in. The servo horn should be closer to the right arm as the mount faces you as displayed in this picture.

Step 2: Sand, Clip and Glue

Choose the servo horn with 4 arms and use the quarter-sized gear from the rack and pinion kit.

Sand the top lip of the horn and the bottom lip of the gear so that they lay flat when held together.

Clip the arms of the servo horn so that they're not wider than the teeth of the gear. Place super glue on the horn, being careful not to glue any of the moving parts, and then glue the gear on top of it, aligning it with a screw.

The servo horn screw that comes with the servo won't reach all the way through, but the device can be used without it. Or use a 2.3 x 8mm screw from the optional micro screw kit to secure it all in place.

Step 3: Add the Pinion

Plug the servo into the servo tester - Brown or black goes to - on the output side, Red goes to +, and the third wire goes to S. Or, use an arduino or raspberry pi to control it.

Plug the black wire from the battery holder or USB into - and the red wire into +.

Once powered, turning the knob should control how fast and which direction the servo spins now. Turn it slowly as you feed the pinion into the arms. The pinion should slide smoothly back and forth as you turn the knob back and forth.

Step 4: Add the Rest of the Assembly

Optionally, print the pinion stop I included in the thingiverse link and glue it to the end of the pinion, to stop it from sliding out of gear.

If you're going to make the glasses, print the glasses clip I included in thingiverse as well, and super glue it to the servo mount.

Step 5: Attach Glasses

Attach the glasses or whatever else you want to the other end of the pinion. I drilled two small holes and used the micro screws to attach them.

Deal with it!