This is a ESP32 based wifi clock I made for the wireless contest. I decided to make this clock overly wireless so it uses three different forms of wireless communication(WiFi, ESP-NOW, & Cellular). The phone is connected to a cell tower and acting as a wifi hotspot. The first esp32 is connected to the phone and displaying the hour it pulls from an ntp server on the OLED.
The two colons are connected to the phone and transmit the minutes and seconds to the other units using the esp32s own communication protocol called ESPNOW. The first colon is transmitting the minutes and the second colon is transmitting the seconds.
There are 5 separate programs for this project that I will be sharing below.”