IV-9 Clock

Information about a clock i once made...

Design, Development, Program. With passion. Copyright EDL-Tech 2010-2016
IV-9 Clock This clock was made with free time on school. It consists of Atmega32 powered MCU board and display board. Power is supplied using 12V wall-wart power supply. The IV-9 is Russian 7-segment numitron tube, which works directly using +5V signals to control. IV-9 is not made of semiconductor material, it uses tungsten wire to show digits. Typically IV-9 is run using 4,5V and 19,5mA, but it can stand well the 5V and 20mA too. IV-9 can be attached to TO-100 socket. In my project, i made small diode board to allow the segments to be chosen to drive. There is board consisting of 4 x 74LS47 7-segment drivers used to drive the segments. Software for this clock was written in Flowcode V5 -AVR and PCB’s were made with LPKF-rapid PCB prototyping machine. With the display board, i tried to use the “old” curved style. The LPKF survived well from it. Parts were mainly sourced form Elfa Distrelec Oy, Finland. IV-9 tubes were bought from Russian seller on Ebay. They costed around 10€ for 8 pieces on auction. Total sum of the clock is not calculated, but i think the sum is under 50€. Links: http://www.tube-tester.com/sites/nixie/data/IV-9/iv-9.htm   Information of IV-9 numitron tubes http://www.elfaelektroniikka.fi Distributor of electronic components Below there is a video of the clock and its inner workings.
IV-9 Clock

Information about a clock i once made...

Design, Development, Program. With passion. Copyright EDL-Tech 2010-2015
IV-9 Clock This clock was made with free time on school. It consists of Atmega32 powered MCU board and display board. Power is supplied using 12V wall- wart power supply. The IV-9 is Russian 7-segment numitron tube, which works directly using +5V signals to control. IV-9 is not made of semiconductor material, it uses tungsten wire to show digits. Typically IV-9 is run using 4,5V and 19,5mA, but it can stand well the 5V and 20mA too. IV-9 can be attached to TO-100 socket. In my project, i made small diode board to allow the segments to be chosen to drive. There is board consisting of 4 x 74LS47 7-segment drivers used to drive the segments. Software for this clock was written in Flowcode V5 - AVR and PCB’s were made with LPKF-rapid PCB prototyping machine. With the display board, i tried to use the “old” curved style. The LPKF survived well from it. Parts were mainly sourced form Elfa Distrelec Oy, Finland. IV-9 tubes were bought from Russian seller on Ebay. They costed around 10€ for 8 pieces on auction. Total sum of the clock is not calculated, but i think the sum is under 50€. Links: http://www.tube-tester.com/sites/nixie/data/IV-9/iv- 9.htm   Information of IV-9 numitron tubes http://www.elfaelektroniikka.fi Distributor of electronic components Below there is a video of the clock and its inner workings.