Thanks! It looks like the leads were clipped, so I believe no desoldering was done. The cathodes look extremely shiny/polished, so my hunch is that this calculator just sat in some Ukrainian basement collecting dust, maybe used every once in a while.
Another question, I bought a six pack of russian 74141s, but haven't had a chance to test them out. Is it safe to drive these chip inputs directly from an Arduino pin, or through 74HC595s? I understand that these chips have zener diodes built in, among other things, but could a faulty chip totally destroy my arduino? I'd rather prevent magic smoke. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/efbf86be-a5fa-4e18-b9a7-94a5f093b8bc%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
