Magnetic seven segment clock using a single digit to display the time either by demand or automatically every 5 mins.
The date can also be displayed.
Used Arduino mega2560 with 4 L293d motor/H Bridge chips to switch the segments. Realtime clock is PFC8563 and can be set via usb and serial monitor (arduino usb). Power is a salvaged switched mode supply giving 5.4v for L293d vcc1 Supply and 18.2v for segments via L293d vcc2. Also 9 v for arduino.
Interface and IO ICs / Peripheral Drivers and Actuators