Instructables: Automated Perpetual Calendar

Years ago I came across a wooden perpetual calendar and I loved the idea.

After thinking about it for months I decided I wanted to make one myself; however, there was a long list of things I wanted to do to improve on the idea. The most important change I wanted to make, is to automate the rings. I know me, and based on current wall calendars not showing the correct month for some time, if a daily change is necessary it would likely only be accurate a small percentage of the year.

Combining microcontrollers, 3D printing, woodworking, and laser jet image transfer, this project will have something for everyone to learn.


High School, College

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