A Flipping, Perpetually-Rotating Clock | Hackaday

Cheryl D. Harrison

Clocks are a mainstay of hackers and makers, as they provide a way to take a look at innovative styles whilst continue to keeping a useful factor to the job. [Brett Oliver] follows this custom in generating a cyclotron clock that employs a perpetual rotating digit thought from a 1900s desk flip calendar.

An exploded view of one of the flip calendar digit display, showing how the tiles fit into the chamber.

Every digit of the clock has a rotating chamber that’s massive ample to healthy a team of tiles within that have digits printed on both confront. The tiles are sized and stacked in these a way that the rotation of the chamber enables the subsequent tile to slide in front of the previous one. Specific digits are revealed by rotating the chamber a number of times.

Just about every of the four digits positions has a 28BYJ-48 stepper motor to rotate the chamber, with each individual motor currently being pushed by a ULN2003 driver module. The major microcontroller is a ESP32 WROOM, and an I2C compatible DS3231 serious time clock (RTC) module retains time. All of the motors are driven off of an LM2596 module that provides 7 V, when the ESP32 and RTC are run from a USB connector.

The diverse modes and the capacity to set time is done through a panel that has a variety of buttons and knobs. The total clock is mounted on a custom made wooden base that has cutouts for the panels and cabling. [Brett Oliver] has done a fantastic work of documentation, likely into depth about the mechanics and electronics of the develop. Design and style data files, together with STLs of the different components, are also obtainable for obtain. Be sure to check out out the video just after the crack.

We’ve featured a flip calendar with a similar running principle just before which obviously displays the inner workings of the mechanism.

https://www.youtube.com/look at?v=MCAMvnq7D7I

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