Summary

This is an additional part (drive) for a wonderful 3D scanner design: https://www.thingiverse.com/thing:1762299
The drive ensures fully automatic operation of the 3D scanner. Unlike similar remakes, it does not require any modifications to an existing table; it simply attaches to it from the side.

When operating the scanner manually, both the model and the phone are subject to significant vibration. This drive allows you to rotate the model smoothly and pause so that the vibration disappears and the phone has time to take a clear picture.

The drive is implemented on the ESP8266 processor in the Wemos D1 mini version. It is controlled via WEB interface. It can work both in connection to a router mode and in access point mode. The mode is selected when the processor first boots (by connecting to its service access point) and can subsequently be changed from its web interface.

When compiling and uploading a sketch, you can configure delays before shooting (to eliminate vibration) and after shooting (so that a slow phone has time to take a photo)

The drive uses a conventional mechanical relay as a command to take photographs. It is necessary to transmit the signal from this relay to your phone. In my case, I used a remote bluetooth button for the camera. I connected the relay contacts in parallel to the button, which ensured that the command was transmitted to any phone.
You will need the following spare parts:
1 Wemos D1 MINI V3.0.0
https://aliexpress.com/item/1005004005586872.html
1 – 28BYJ-48 engine with controller
https://aliexpress.com/item/32906617266.html
1 relay
https://aliexpress.com/item/1005002443020015.html
1 bluetooth button
https://aliexpress.com/item/32887119959.html
8 screws 2.5x13