Adding wires to the LEGO MINDSTORMS vertical plotter


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In this post I’m sharing detailed instructions for the most difficult part when building the plotter: adding the dental floss wires. You’ll learn how to fasten the threads securely and make them wind well, without blocking the mechanism.

LEGO 8050 Universal Motor Set

I think I learned this technique while building one of my very first LEGO Technic sets, the 8050 universal motor set. It was an awesome set back then and maybe it awakened my love for walking robots and remote controlled vehicles. Isn’t it mazing how long the stuff you’ve learned with LEGO sticks?

This guide is a companion guide to my building and programming instructions for the vertical plotter.

Step 1 – Remove the pen holders

In the first step we make sure to have access to the inside of the vertical plotter by removing the pen holders.

Step 2 -Guide the wire

Next we can guide the wire along and around all spindles and axles.

Step 3 – Put the wire through the sides of the bush

Step 4 – Add yellow bushes

Step 5 – Push the grey axle back

Step 6 – Tighten

Step 7 – Wind the wire

Step 8 – Make the loop knot

In the video below you can see the whole process for one motor from start to end.

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