Two-wheeled Bot. My first attempt at model instructions.

7 Sep

Two-wheeled Bot Instructions

This past August 15th and 16th, educators from around Philadelphia came together for two days of free professional development provided by the GRASP Outreach program at U Penn SEAS. Many of the participants in attendance, myself included, will be rookie coaches for this year’s FLL season and the two-day workshop was designed to be a bit like a boot camp to get us up to speed and to impart the tips and tools we will need to have a successful first season.

The first task our trainers charged us with was to build a simple a simple 2-wheeled robot. One of the challenges the group faced in building the robots was that we did not have a blue print or set of instructions in front of us. (I think they were having a difficult time finding them. I’m not sure.) Instead, our trainer talked us through the assembly one part at a time. This, as you can imagine if you have built an NXT robot before, was challenging. Keeping everyone moving at the same pace was nearly impossible.

As we built our bots piece by piece from oral instructions, I started to wonder how in the world I would be able to recreate the robot once I was back at school. So, I backed up a few steps, opened my laptop and started to capture each step with the webcam. Soon, people around me were asking me to post the pictures or send them to them.

Well… I got back to campus and sat down to build the robot using my pictures and the pieces from an NXT kit, and I quickly realized that there were multiple problems.

Firstly, the angle at which I originally shot many of the steps made it pretty difficult to figure out what was going on.

Secondly, while the model was simple enough for teachers to build and it required few parts in general, it required more parts than are available in a single NXT kit. To build this model, a teacher would either need to pull more pieces from additional kits, or have surplus materials available. This assumes teachers have more than one kit to work with, which is often not the case.

“Well… that’s no good” I thought, and so I started to redesign the bot using only parts from a single kit and documenting the process as I went.

So, for those of you have been waiting for the original photos… I apologize for not posting them sooner. Hopefully, you’ll find the new photos are an improvement and that the photos and steps clearer. The robot is very similar to the one we built with just a few swapped parts to ensure it can be built from a single NXT Mindstorms kit.

Let me know what you think of the model instructions I put together. It was my first attempt and I’m curious to see how easy or difficult they are to follow. Please let me know!

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