Discrete 7 Segment LED Clock

thingiverse

This is a remake of yopzolo's Clock Display, which can be found at https://www.thingiverse.com/thing:570943. The remake features a new back with holes for the power socket and buttons. A new circuit design has been implemented that utilizes a MAX7219 matrix driver. A custom PCB accommodates the LEDs, MAX7219, Arduino Mini, and a DS1302 RTC along with its associated components. All Eagle files and Arduino sketch have been included, as well as the new back STL file. The board was created using the toner method, featuring 1206 SMD components. To set the time: Press the MODE button; the hours will flash five times per second. Use the UP and DOWN buttons to adjust the hours. Press the MODE button again; the minutes will flash five times per second. Utilize the UP and DOWN buttons to set the minutes. Finally, press the MODE button once more, and the normal time mode will be displayed, denoted by a colon separator flashing once per second.