Clock with 2 time zones

thingiverse

Hello.\r\nHere is a dual-time-zone clock that displays both local time and another time zone simultaneously.\r\nMy wife, who is Chinese, wanted to know the current time in her country at all times, so I created this clock.\r\n\r\nTwo buttons allow you to adjust the local time as well as set the offset for the second time zone (GMT offset) and also control brightness.\r\n\r\nThis project is based on an Arduino Micro, with two LED matrices (MAX7219 8x32) and a universal clock module (RTC DS3231). These components are easy to find and inexpensive.\r\n\r\nFor a clean assembly, I used a custom-designed PCB that I had printed via EasyEDA. Unfortunately, my account is too recent to share the project directly on their site, but I've included the PCB design file and the JSON file needed to generate the project on EasyEDA. This website also offers low-cost PCB manufacturing.\r\n\r\nYou'll find a SketchUp file that was used to create 3D models of the components, as well as an INO file containing the Arduino program.\r\n\r\nI believe this assembly is straightforward enough not to require a diagram, but feel free to ask if you have any questions!\r\n\r\nMy Zortrax has some issues printing large parts, so I had to split the display into two sections. I then bonded these two sections with super glue and applied a cover that solidifies the entire assembly while also being bonded.