NL7037 clock

[Paul Andrews]

Finally completed this NL7037 clock/space heater. Vacuum-tube power supply, ESP32 processor for networking, clock, sounds etc.

I'll do a write-up on the odyssey that got me here in a few weeks. It has been fun.

Meters for the HV and nixie tube current - That's DC voltage, not AC

Back view, with the teeny tiny WiFi antenna. The knob controls the HV level.

[martin martin]

A true madman at his craft.  

But seriously, looks fantastic!

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[Dylan Distasio]

Looks amazing!  Love it. 

[jb-electronics]

Congratulations, a wonderful clock! How much does it weigh? ;-)

Cheers

Jens

[Michail Wilson]

Beautiful.

 

Michail Wilson

206-920-6312

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[Kevin A.]

Very nice work. Looks like it will keep you warm during winter too!  

On Wed, Oct 2, 2019, 1:27 PM Paul Andrews <pa...@nixies.us> wrote:

[newxito]

Fantastic work! 

[Paul Andrews]

Here’s a video that demonstrates the chiming etc. https://youtu.be/Z_mts0oTjXU

[Paul Andrews]

Martin, one of your mini neons is the power indicator. That’s I wanted them all that time ago.

[Michail Wilson]

LOVE IT

Michail Wilson
206-920-6312

-----Original Message-----
From: neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] On Behalf Of Paul Andrews

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[Mahdi Al Husseini]

Incredibly well done 👍🏼 

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[Jeff Walton]

Really outstanding work, Paul.



Jeff Walton

-----Original Message-----
From: neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] On Behalf Of Paul Andrews
Sent: Wednesday, October 2, 2019 9:28 PM
To: neonixie-l
Subject: [neonixie-l] Re: NL7037 clock

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[gregebert]

How long did it take to find these unobtanium tubes ? That in itself is an impressive feat.

I wont ask how much; it pains me even to think how much those tubes fetch in auctions.

The nostalgic 'tube chassis' appearance brings back a lot of memories from that era. Well done.

I'm facing touch choices for the design of my R|Z568m clock because our small house is a bit cluttered, and with 6 nixie clocks already in-use display-space has to be negotiated.

Most likely I will make a hardwood console for all of the video equipment and sneak-in the clock.

[GastonP]

Really beautiful and well done!

What's the purpose of the LDR in front?

The writeup will make a very interesting read, I'm sure.

[Paul Andrews]

It took me a couple of years to find the tubes. I got them for a bit less than the price of R|Z568 tubes.

I hear you about design choices. I really don't have space for all the clocks I have now, but this one was a labor of love.

[Paul Andrews]

The LDR is read by the ESP32 which uses the value to dim the nixies and the LEDs. The meters don't dim - the power comes straight from the 6V3 filament winding for them. The little neon is a mains power indicator. It is wired straight across the inputs (with a suitable resistor). It was a safety feature when I was bread-boarding this thing. Now, when the clock display is turned off, you can see power is still applied because that still glows.

[Nicholas Stock]

Paul, where did you get the case from? Standard chassis and cut to fit or a custom job?

Sent from my iPhone

On Oct 3, 2019, at 15:17, Paul Andrews <pa...@nixies.us> wrote:



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[alex nolan]

That price is the most surprising thing about this build! Wow, Paul, that's quite lucky!

[Paul Andrews]

Custom job from protocase, I used their 5-sided enclosure in aluminum. I was intending to use raw finish and polish it up, but it arrived brushed so I left it like that.

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[martin martin]

it's a nice little neon!

Question:  Where did you get those cool tiny meters?  I had thought to install a small non-digital volt meter on one of my clocks.

Also, what did you use for a back-light?

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[Paul Andrews]

eBay: https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F251035923796

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F260959454790

These particular ones include the backlight which is an incandescent bulb. They are also the smallest I could find. There are slightly bigger ones that look the same that you can take the back off, then you could stuff any kind of light in there you like, assuming the display is translucent I guess.

You can also get LED backlit meters.

I couldn’t find a DC meter with a suitable scale, so I just bought the AC one and put a suitable resistor in series. I had bought one of the bigger ones to see how they make them into AC meters, and it is basically just a diode.

These kinds of meter are used in some tube amps for “adjusting the bias”, so they are really specced for that purpose. On AliExpress you can get the bigger ones with almost any spec you like.

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[Bill Notfaded]

The meters are a really nice touch too Paul.. awesome!!! It doesn't get more retro than that!

Bill

[Bill Notfaded]

Also I envy your tube collection and your skills at putting together custom h/w and s/w to show it off. Really good stuff Paul. You set the bar Paul sharing your work open source... Hat's off brother!

Bill

[MichaelB]

Gorgeous Paul!! Reminds of a sexy little single-ended power amp! And the meters are a perfect fit! Congrats!

[Bill Notfaded]

It does look like a monoblock tube amp for sure.  The tubes, obviously, transformer, and meters totally make it look like one!

Bill

[Paul Andrews]

It took me a bit longer than a few weeks. I ended up going into a lot of detail in my blog, but here is a summary: https://www.nixies.us/clocks/nl7037-nixie-clock/

[Bill Notfaded]

Looks awesome Paul!  I love it!

Bill

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[Mahdi Al Husseini]

I’m amazed every time I see this. Way to raise the bar higher. Great work!

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[Mahdi Al Husseini]

I particularly like the analog gauges - where did you get them? I tried searching based on some identifying data in the images, but without luck 

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[jb-electronics]

Fantastic work, congratulations! And I really love the LDR, such a nice design!

Best wishes
Jens

[Paul Andrews]

Thanks guys. That means a lot.

This is the ammeter: https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F254497886158

This is the voltmeter: https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F254527529630

On Mar 29, 2020, at 2:37 PM, jb-electronics <webm...@jb-electronics.de> wrote:



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[Jeff Walton]

What a great looking piece of nixie art!  It is a one of a kind that is unique in many ways.  Love the industrial look and the great sounds.  It will need a strong shelf...  😀

Jeff 

-------- Original message --------

From: Paul Andrews <pa...@nixies.us>

Date: 3/29/20 12:50 PM (GMT-06:00)

To: neonixie-l <neoni...@googlegroups.com>

Subject: [neonixie-l] Re: NL7037 clock

[Ian Vine]

Nice

IanV

On 29 Mar 2020, at 18:50, Paul Andrews <pa...@nixies.us> wrote:



[Bill Notfaded]

Also another amazing thing Paul is that you collected this many NL7037's!  Does you single tube clock thing still have one or did you have more than six!?!?!?

Bill

[Paul Andrews]

No. I stuck at six NL7037. Now my single tube clock has a NL934 :-). Well right now it has something else plugged into it...

[Bill Notfaded]

That clock is also really neat Paul!  Really cool to display all your tubes and you added lots features!