Flipo-Binary-Clock-2x6-Flip-Disc-Display Specification fully functional clock, just need to connect the power supply two buttons for time settings slide power switch (on/off) accurate real-time clock (RTC) on board the RTC clock memory is backed up by a supercapacitor, so the clock does not require an additional battery in the event of a power failure or turn off clock dimensions: 116 x 66 x 53mm (4.6" x 2.6" x 2.1") the clock requires a 12V, 1.5A power supply, 5.5mm plug diameter, 2.1mm center pin positive + ISP programming connector - only for intermediate users - read more here Datasheet project website 2x6 flip-disc display repository clock schematic time setting instructions back panel description clock casing design for 3d printing: casing #1 casing #2 casing #3 How to read binary time download instructions Binary Clock Controller PCB: 2x6 Flip-disc Display PCB: