Simple Arduino 3D printed clock

myminifactory

I created a straightforward 3D printed timepiece powered by an Arduino board and a stepper motor. I had two concepts in mind with this clock: Make a genuinely simple clock, requiring no additional hardware (beyond the electronics). Show how it can interact with and enhance mechanical devices. The motor I purchased from Adafruit has 32 steps and a reduction ratio of 1/16.032. Initially, it appears not to be an ideal choice for a timepiece, but with some programming, it works flawlessly. The combination of steps and ratio results in 513.034 steps per revolution. Divided by 60, this equals 8.551 steps for a one-second motion. A stepper motor can only move an integer number of steps, so the program starts with 8 steps, keeps track of any remainder, and switches between 8 and 9 steps as needed. The human eye won't detect the difference, and will instead see 60 motions per revolution. The interval can be set to 1000 milliseconds (1 second) for setup and testing, then changed to 60000 for running with minutes and hours. The accuracy of the clock depends on the Arduino board used, with some boards displaying clocks that run within a couple of minutes each week, while others may lose or gain as much as half an hour in the same timeframe. Here are links to the program: For the Adafruit 1/16.032 geared motor: https://create.arduino.cc/editor/jaconline/3bf4d5f0-314d-42f8-97cc-338978bbc35c/preview for 1/64 geared motor: https://create.arduino.cc/editor/jaconline/960ca65e-2d30-483c-b054-a6a77e4961be/preview If you have any questions, comments or need assistance, please leave a comment and I'll be happy to help. Happy Printing and Making! Now, if you'd like to attempt a more complex timepiece, visit: https://www.myminifactory.com/object/3d-print-84849.