This contraption is utterly useless... however, the skills are not

This workshop uses these skills

• Laser cutting

• 3D printing

• Soldering

• DC voltage testing

• Wire "stripping"

• Some Electrical Engineering (don't worry about this part)

If there are pre-made kits of this workshop, use those, however the metal arm of the switch needs to be bent slightly inwards (see second photo). This can be done in almost any way imaginable.

If there are pre-made kits of this workshop, use those

DPDT - (Double Pull Double Throw)

If there are pre-made kits of this workshop, use those

We must test the motor to ensure it will rotate in the right direction. One way to do this is to connect it to a power source, like a battery or our DC voltage output supply (guide is linked). The motor should be spinning clockwise if the connections are pointing toward you and the "shaft/axle" is pointing away from you. Then mark the top side with tape or some marking (this will show up as a blue piece of tape in this guide).

However, if red-black wires are on them, hold the motor so that the red wires are on the right, mark the motor, and de-solder the wires.

There is one 3D printed part which is an STL in a shared Google Drive, print this with the larger face on the build plate, with any settings, however these usually work well:

PLA

Layer hight - 0.2

Wall thickness - 0.8

Infill - 5%

No supports

Build plate adhesion type - None

The casing is made out of wood, which we cut out with our laser cutter (guide is linked)

The files can be found here (this is a link to a shared google drive with an Adobe file to the parts). This file is EVERYTHING you need for the wood. The ARM is cut using 1/4in plywood while EVERYTHING ELSE is cut using 1/8in plywood. 

A simple way of getting around this is "hiding" the other elements by clicking the "eye" icon next to the element in the layers tab, then cut the remaining elements

First: make sure you are certified to take the soldering quiz on our canvas to have access to the soldering irons. 

Just like the 2 photos on the left, make sure the limit switch looks exactly like the photo, then solder a green wire to the left-most prong, and the blue wire to the right-most prong.

The orientation for the DPDT switch doesn't matter, however once you pick an orientation STICK WITH IT. Once you have your orientation, just like the photo, solder the blue wire from the limit-switch to the top right input of the DPDT, just like the magenta-circled part of the photo.

Now take the small ~1in yellow wire and solder one end to the top left of the DPDT and one to the bottom right of the DPDT (just like the photo)

Finally, we solder the two leads coming from the battery to the DPDT switch, the black wire goes on the middle-top connection while the red wire goes on the middle-bottom connection