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Topic: Numitron / Minitron incandescent clocks  (Read 546 times) previous topic - next topic

TwirlyWhirly555

May 12, 2018, 02:01 pm Last Edit: May 12, 2018, 02:13 pm by TwirlyWhirly555
A while back I wanted to start making clocks using different numitron / minitron displays that are around and have been collecting them as time goes on .

I currently have 5 clocks made with 2 cased and the other three waiting to be cased .

The controller is a 328p PDIP and the RTC is a DS3231 and the digits are driven by 6C595 power shift registers that have open drain outputs . Displays are powered from a LiPo cell and the 328 / shift registers are powered from 5V  .

The main thing to improve is adding time settings and extras as currently the code is very simple - displays the time .

Its all hand wired and solderd , No PCBs are used except for the 5V boost / Lipo charger

 IV - 21 Numitron

P1010300 by TwirlyWhirly555, on Flickr
P1000235 by TwirlyWhirly555, on Flickr


 IV - 13 Numitron .
001 by TwirlyWhirly555, on Flickr
005 by TwirlyWhirly555, on Flickr

This is the IV - 13 and a 4 digit mintron clock finsihed and cased .

002 by TwirlyWhirly555, on Flickr

 IV-9 , case will be repaced to match the other two

IMG_1230[1] by TwirlyWhirly555, on Flickr
IMG_0975[1] by TwirlyWhirly555, on Flickr

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