B7971 test unit

[LeRoy Lee]

A while back I posted on here asking what I could use the B7971 nixie tubes for.  I decided to make a test unit to verify operation.  The scope of the project grew and the link below shows video of what I came up with.

It has bluetooth connectivity to set time and date and to update the message from my phone.  Real-time clock.  Running on esp-32 using both cores of the dual-processor. Powered by 5v USB.   It has been a fun project.

https://1drv.ms/v/s!Ar1DqB1KYXrjgYohpAF7PiRZEpiPoA

Video of tube demo

I have decided I might sell some of these tubes.  Any idea what I should ask for them?

[Nick Andrews]

Very cool!   I'd love to have some of those tubes.  Wish I'd known about nixies in school,  when with my parents being teachers I might've been able to locate some for free. Let me know how many you want to sell. 

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[Nicholas Stock]

Very nicely done!!!! 

Current rates on the bay for B7971's are anywhere from $150 to $190 each.