Improved Clock Driver Circuit

An updated clock driver circuit for a 3D printed stepper motor driven clock with large exposed gears.

This new design is:
Quieter
More accurate
Uses easy to find parts
Uses common stepper motor
Calibrates automatically

It is an update to the silent stepper motor clock at https://www.myminifactory.com/object/...

The new design uses a CNC Shield V4, Arduino Nano, TMC2208 driver, DS3231 precision real time clock, and a standard NEMA17 stepper motor. All components are available from the standard places such as Amazon. The TMC2208 makes the clock run completely silent. The DS3231 RTC has an accuracy of about a minute per year. The remaining parts are 3D printed.

The algorithm and assembly guide can be downloaded from https://www.stevesclocks.com/sp6

A discussion forum can be found at https://www.stevesclocks.com/forum

The primary components used in this clock driver include:
CNC Shield V4
TMC2208 stepper motor driver
Arduino Nano (Mini USB or USB-C)
DS3231 real time clock
NEMA17 stepper motor
All components can be purchased on Amazon or other sources

Contents:
0:00 Introduction
0:55 CNC Shield V4
2:03 Components
2:14 Wiring
5:24 Size Differences
6:06 Configuration
7:28 Cables
10:49 First Test
12:07 Future Designs
13:26 Summary