{"id":6153,"date":"2021-04-14T10:59:08","date_gmt":"2021-04-14T09:59:08","guid":{"rendered":"https:\/\/blog.fh-kaernten.at\/ingmarsretro\/2021\/04\/14\/vfd-clock-with-date-day-of-the-week-and-sound\/"},"modified":"2021-04-14T10:59:08","modified_gmt":"2021-04-14T09:59:08","slug":"vfd-clock-with-date-day-of-the-week-and-sound","status":"publish","type":"post","link":"https:\/\/blog.fh-kaernten.at\/ingmarsretro\/2021\/04\/14\/vfd-clock-with-date-day-of-the-week-and-sound\/?lang=en","title":{"rendered":"VFD clock with date, day of the week and sound"},"content":{"rendered":"
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I received a new kit for vacuum fluorescence display from G\u00fcnter (gr-pojects). Thanks a lot!<\/p>\n

\"\"<\/a>It is a clock with Type IV-11 vacuum fluorescent display tubes for hours, minutes and seconds, and an IV-18 tube for date display, and IV-3 for displaying the day of the week. The clock consists of a mainboard with power supply, CPU, MP3 module and driver blocks for the tubes. The time is set and synchronized via an externally connected DCF-77 receiver. Later, the board will be extended with a real-time clock circuit. The power supply for the entire circuit comes from a small plug-in power supply with 12V \/ 1.2A. The total power consumption is about 450mA. As a special feature, the clock has a small MP3 sound module with MicroSD card slot. This receives from the microcontroller via the serial interface every quarter of an hour a corresponding command to play an MP3 file. Thus the quarter of an hour is signaled with a „gong beat“, half an hour with two and three quarters of an hour with three „gong strikes“. At the full hour, the corresponding time is announced.<\/p>\n

The entire circuit is built into an aluminum-acrylic housing. All fittings are milled and screwed. A video of the structure and the function can be seen below:<\/p>\n