2022-02-04 (F) Weekly Summary

I bought a laser engraver. The manufacturer claimed I could set it up in ten minutes, but I was pleased that it only took an hour. I hope this will be a valuable tool for rapid prototyping.
My laser

I started a new project that looks like an old one. I've made distance sensors before, but this time I'll be guiding a workshop where everyone has to make one, and I needed to select inexpensive hardware that is also novice-friendly.
What I plan to use

I started with a platform that I could cut at home. The servo motors and battery attach with rubber bands strung through holes in the wood and snagged on cleats.
The first base

I assembled the parts and had trouble getting the rubber bands to stay. The pegs were so short that the bands slipped right off. The other problem was the servo horns which were too short.
Parts installed with rubber bands

In the second version, I extended the cleats, which helped immensely. I thought I would need a low-friction cam that could slide over the user's skin, but a free-spinning wheel attached off-center should work. The first one was too small.
Testing servos and wheel

The rest of the summary posts have been arranged by date.
First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8

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