New Parts, New Problems

This past Thursday, UPS delivered the 3D printed parts for the updated design of my anemometer. Like a little kid on Christmas morning, I tore into the packaging with a vengeance.

I’m still amazed at the world we live in where someone can wirelessly transmit what equates to a text file, and a little over a week later, receive a real copy of something that, until days before, only existed in the digital world of 1’s and 0’s.

Gathering all the necessary extra parts, I test fit the 13mm bearing onto the clip that sits comfortably inside the rotor – a perfect fit. Now it was only a matter of whether or not the stator design would accept the bearing as comfortably as the rotor.

Unfortunately, the socket in the stator is too big for the bearing to fit snugly, so it was back to the drawing board.

In version 1 of the anemometer, the stator socket for the bearing was too small, so I increased the diameter by 1mm.

The downside to off-site manufacturing, however cost effective, is the time it takes to get the parts delivered.

Now, in version 2, the stator socket for the bearing is too big. So I’ve decreased the size by 0.5mm – a happy medium between too big, and too small.

Now we play the waiting game over a 13mm bearing and its respective connectors.

Everything else in the design is just about perfect. The clip inside the rotor that holds the bearing in place is a little fragile, but if the end user inserts the bearing once and leaves it there, it will work fine.

Once the new stator comes in, hopefully later this week, I’ll be able to get it assembled and start writing up a tutorial on the assembly, and after getting a working version of the anemometer complete, I’ll be able to start working on programming an Arduino program for data storage and a Python program to graph the data, both from data stored on an SD card and live data via USB/Serial connections.

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