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SiriusHardware · 25th Feb 2020, 9:30 pm

Interesting about that Russian display, Tim.. It's definitely common cathode?

I find the quickest way to 'buzz out' a multiplexed 7-segment display like that is to use a multimeter on its 'Diode Test' range - the voltage / available current from the probes is usually enough to light individual segments dimly if you put the negative lead on a common and the positive lead on a segment connection - assuming the display is common cathode of course. You can work through all the possible connections pretty quickly like that.

25th Feb 2020, 9:30 pm	#253
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,560	Re: MK14 schematic revisions Interesting about that Russian display, Tim.. It's definitely common cathode? I find the quickest way to 'buzz out' a multiplexed 7-segment display like that is to use a multimeter on its 'Diode Test' range - the voltage / available current from the probes is usually enough to light individual segments dimly if you put the negative lead on a common and the positive lead on a segment connection - assuming the display is common cathode of course. You can work through all the possible connections pretty quickly like that.