November 30, 2022


It's the Technology

A Flipping, Perpetually-Rotating Clock | Hackaday

A Flipping, Perpetually-Rotating Clock | Hackaday

Clocks are a mainstay of hackers and makers, as they give a way to investigate imaginative layouts even though nevertheless protecting a functional component to the task. [Brett Oliver] follows this custom in building a cyclotron clock that takes advantage of a perpetual rotating digit strategy 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.

Just about every digit of the clock has a rotating chamber that is huge enough to suit 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sized and stacked in these a way that the rotation of the chamber allows the following tile to slide in front of the outdated 1. Precise digits are uncovered by rotating the chamber a variety of times.

Each individual of the 4 digits positions has a 28BYJ-48 stepper motor to rotate the chamber, with each motor staying pushed by a ULN2003 driver module. The key microcontroller is a ESP32 WROOM, and an I2C suitable DS3231 serious time clock (RTC) module keeps time. All of the motors are driven off of an LM2596 module that supplies 7 V, when the ESP32 and RTC are powered from a USB connector.

The distinct modes and the means to set time is performed by a panel that has different buttons and knobs. The full clock is mounted on a custom picket foundation that has cutouts for the panels and cabling. [Brett Oliver] has finished a fantastic work of documentation, likely into depth about the mechanics and electronics of the develop. Style information, which includes STLs of the several elements, are also available for download. Be sure to look at out the movie just after the split.

We have showcased a flip calendar with a identical operating basic principle in advance of which clearly displays the interior workings of the system.