Rotary 7-segment clock

Jan 8, 2021 : Improved version is released,
https://www.thingiverse.com/thing:5242321

Rotary 7-segment mechanical clock, driven by a single stepper motor and ESP32.

- It acquires current time from network (ntp)
- It consists of only 7 types of parts (total 14 parts)
- Attractive cantilever-type design. Now circuitry and motor are in the cylinder
- Complex and interesting motion

note: this clock takes a long time to show current time (up to 4 minutes) if all digits are changed, because it has 12 wheels. Usually it takes around 10 seconds to change the rightmost digit.

Update Jan 17, 2022 :
WiFi setting from your smartphone is now possible. Use smartConfig.ino for your ESP32 microcomputer. This is based on the code by airtcp,
https://github.com/airtcp/esp32_demo_for_lolinlite
and I added some motions to show the current status of the clock.