Made some headway on two projects...

[Bill Notfaded]

I've been working a big B-7971 array and numitron clock. I'm a computer scientist but the EE stuff isn't first nature quite yet... Here's a couple videos of my recent experiments:

https://youtu.be/LzOKLMmQZDM
https://youtu.be/TbwpUXnU_Eg

I found a place that sells aluminum bar stock that would make a nice base for the B-7971 array. It's 3/8" x 4" x 36". I've been looking to tap the aluminum with M2.5 threads for the standoffs. I've got screws for the top of standoffs on the PCB now but would like to find some nicer hex screws. Originally I thought maybe someone made base material with a grid of female threads in it but haven't found anything like that... It's how I started learning the tool and die.

Bill

[Hannah Mishin]

Hi Bill-

Wowza- Awesome!

Machine Shop is my specialty.  

I hate to be redundant, but in sourcing any screw that may be niche or otherwise difficult to source, have you tried looking at https://www.mcmaster.com/

Their search is pretty incredible - try this:  https://www.mcmaster.com/machine-screws

They also carry a ton of stock in various styles, alloys and configs.

Any machining/material/enclosure stuff- let me know always happy to help.

H

http://hannahmishin.com/

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[Bill Notfaded]

That's a great website Hannah!  Thanks.  I really like the socket head screws and they have awesome selection of materials.

Bill

On Monday, May 13, 2019 at 8:17:01 PM UTC-7, Hannah Mishin wrote:

Hi Bill-

Wowza- Awesome!

Machine Shop is my specialty.  

I hate to be redundant, but in sourcing any screw that may be niche or otherwise difficult to source, have you tried looking at https://www.mcmaster.com/

Their search is pretty incredible - try this:  https://www.mcmaster.com/machine-screws

They also carry a ton of stock in various styles, alloys and configs.

Any machining/material/enclosure stuff- let me know always happy to help.

H

http://hannahmishin.com/

On Mon, May 13, 2019 at 10:32 PM Bill Notfaded <notf...@gmail.com> wrote:

I've been working a big B-7971 array and numitron clock.  I'm a computer scientist but the EE stuff isn't first nature quite yet...  Here's a couple videos of my recent experiments:

https://youtu.be/LzOKLMmQZDM
https://youtu.be/TbwpUXnU_Eg


I found a place that sells aluminum bar stock that would make a nice base for the B-7971 array.  It's 3/8" x 4" x 36".  I've been looking to tap the aluminum with M2.5 threads for the standoffs.  I've got screws for the top of standoffs on the PCB now but would like to find some nicer hex screws.  Originally I thought maybe someone made base material with a grid of female threads in it but haven't found anything like that... It's how I started learning the tool and die.

Bill

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[martin martin]

I have a bunch of spare Numitrons!  I think Bill may have a project for them...

mcve...@gmail.com

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