Clocks are a mainstay of hackers and makers, as they deliver a way to discover innovative patterns when nevertheless sustaining a practical element to the project. [Brett Oliver] follows this custom in creating a cyclotron clock that employs a perpetual rotating digit concept from a 1900s desk flip calendar.
Each digit of the clock has a rotating chamber which is major plenty of to match a team of tiles inside of that have digits printed on both experience. The tiles are sized and stacked in this sort of a way that the rotation of the chamber makes it possible for the up coming tile to slide in front of the old one. Particular digits are exposed by rotating the chamber a amount of situations.
Each of the four digits positions has a 28BYJ-48 stepper motor to rotate the chamber, with each motor staying driven by a ULN2003 driver module. The key microcontroller is a ESP32 WROOM, and an I2C compatible DS3231 authentic time clock (RTC) module keeps time. All of the motors are pushed off of an LM2596 module that provides 7 V, while the ESP32 and RTC are powered from a USB connector.
The diverse modes and the skill to established time is carried out via a panel that has numerous buttons and knobs. The total clock is mounted on a customized picket base that has cutouts for the panels and cabling. [Brett Oliver] has completed a wonderful work of documentation, likely into element about the mechanics and electronics of the establish. Design and style files, like STLs of the several parts, are also out there for down load. Be positive to check out out the video clip just after the crack.
We have featured a flip calendar with a very similar working principle prior to which clearly demonstrates the inner workings of the system.