Clocks are a mainstay of hackers and makers, as they offer a way to discover creative designs although even now preserving a practical aspect to the challenge. [Brett Oliver] follows this custom in generating a cyclotron clock that uses a perpetual rotating digit concept from a 1900s desk flip calendar.
Every single digit of the clock has a rotating chamber that’s big ample to suit a team of tiles inside that have digits printed on either confront. The tiles are sized and stacked in these kinds of a way that the rotation of the chamber permits the future tile to slide in front of the aged 1. Particular digits are discovered by rotating the chamber a amount of occasions.
Each of the four digits positions has a 28BYJ-48 stepper motor to rotate the chamber, with each and every motor staying driven by a ULN2003 driver module. The primary microcontroller is a ESP32 WROOM, and an I2C suitable DS3231 true time clock (RTC) module retains time. All of the motors are driven off of an LM2596 module that provides 7 V, whilst the ESP32 and RTC are driven from a USB connector.
The different modes and the means to set time is accomplished through a panel that has different buttons and knobs. The entire clock is mounted on a custom made wooden base that has cutouts for the panels and cabling. [Brett Oliver] has carried out a great job of documentation, heading into detail about the mechanics and electronics of the construct. Style information, which includes STLs of the several elements, are also available for obtain. Be positive to verify out the movie after the split.
We’ve featured a flip calendar with a equivalent functioning theory right before which plainly shows the internal workings of the mechanism.