w/MicroPython and ESP8266; not perfect but still works fantastic, beautifully and accurate — I’ve made and programmed quite a few DIY WiFi clocks . The core code is always the same, but you can slap different displays on it. I have made clocks using very small 0.96" OLED display, with shiny HD44780 LCDs, with matrix LED display, even one with a motorized flip…