In this case, [Jeremy Cook] put one to work as the faceplate for his “742 Clock,” a name ... In addition to the actual circuit board that holds the Wemos ESP32 module and the LEDs, a circuit ...

If you had a calculator in the 1970s it probably had one, but in the present, [Joshua Coleman] has incorporated one into a pleasingly retro digital clock. Inside the 3D printed case is an ESP32 ...