ESP32 ServoClock

\ Arduino code for digital clock, 3D printed inspired by www.otvinta.com, https://www.thingiverse.com/thing:3266949. I added some thin back covers to hide the cables and added two feet to give a safe stand. These files are here: https://www.thingiverse.com/thing:4313748

Author of the code: Jordi Ginjaume. Excellent code Jordi! It inspired me to do the thing with Arduino. Original Version 20190118 (his code and case can be found here: https://www.thingiverse.com/thing:3375870)

Modified for use with an ESP32 wihtout RTC, just calling NTP all 12 hours over WiFi using the following hardware:

1 ESP32 programmed with Arduino\ 2 PCA9685 chaining servo drivers, set solder blob on A0 on the second board for digits 3 and 4\ NTP call via WiFi\ 28 SG90 servos

Important: keep sequence with servos plugging into PCA9685:\ first digit: 0-6, leave 7 blank\ second digit: 8-14, leave 15 blank\ repeat on second board for third and forth digit

PIN Connections on ESP32\ 21 -- SLA\ 22 -- SLC\ 0 -- OA

I inserted a switch to turn off the power to the PC9685 for programming purposes.