May 25, 2015

Meter Clock using a DS1307 RTC and Trinket Microcontroller

  This Meter Clock uses a DS1307 RTC and Trinket Microcontroller to show the current time in style. The meters are PWMed into position directly from a few pins of the Trinket. The meters are ammeters that have had their scale replaced by Hour and Minute scales. You can see the scale adjustment calculated below, another alternative would be to do it in code as I did with the Multimeter