Tuto video :
Buy the components : https://jeje-linge.fr/pages/iron-man-arc-reactor-clock
Arduino Code : https://github.com/jejelinge/IRON_MAN_ARC_REACTOR
Libraries :
TM1637 by Avishay orpaz
Wifimanager by Tablatronix or Tzapu
Ntpclient By Fabrice Weinberg
Adafruit NeoPixel by Adafruit