@UsagiElectric
  @UsagiElectric
Usagi Electric | The World’s Largest 555 Timer… Again! @UsagiElectric | Uploaded December 2022 | Updated October 2024, 23 hours ago.
PCBWay is having a great Winter sale now, check it out here:
pcbway.com

We’re going back to an old one - the venerable vacuum tube 555 timer. This was a really fun project we took on a while back to try to make a 555 timer out of just vacuum tubes, and while the prototype made at home on the mill was excellent in every sense of the word, we were struggling coming up with a more professional looking version. Well, fear not, our sponsor PCBWay is here! PCBWay hooked me up with some pretty righteous PCBs, so let’s take a look at what they sent and see if we can get the new and improved 555 going.

Everything on the 555 timer is available here:
github.com/Nakazoto/ue555

Notably, here’s the link to the datasheet:
github.com/Nakazoto/ue555/blob/main/UE555_Datasheet_v0.1.pdf

And here’s the link to the gerber files:
github.com/Nakazoto/ue555/tree/main/Gerber%20Files

If you need tubes, I strongly suggest either 6AU6 or the 6CB6, both work brilliantly. Just search eBay or your local auction site for “6AU6 lot” or “6CB6 lot.”

The 7-pin sockets can be found on most online retailers like Amazon or AliExpress. Just search for “7 pin tube socket” and look for the ones that are PCB mount.

If you want to support the channel please hop over to Patreon:
patreon.com/usagielectric

Also, we now have some epic shirts for sale!
my-store-11554688.creator-spring.com

Come join us on Discord and Twitter!

Discord: discord.gg/p7UsfHD
Twitter: twitter.com/UsagiElectric

Intro Music adapted from:
Artist: The Runaway Five
Title: The Shinra Shuffle
ocremix.org/remix/OCR01847

Thanks for watching!

Chapters
0:00 A look back at the OG 555
1:28 The new hotness
2:30 A close look at the new PCBs
5:14 Let’s build it
7:50 A close look at the datasheet
9:10 Tuning the OpAmps
13:01 Testing: Schmitt Trigger
14:24 Testing: Astable oscillator
16:46 How do you get one?
18:53 What’s next? (The CSS555!)
21:49 Bunny!
The World’s Largest 555 Timer… Again!Working on a Super Rare TI-99/4Vacuum Tube Computer P.20 – IF-THEN HardwareVTC P.31 – Time for a Bit of a RedesignMinicomputer Part 22: Working on the FFC and CDC Floppy DriveThe Mini-Centurion is Back!Printing ASCII “Art” Like it’s 1980!Minicomputer Part 20: Connecting the CDC 8” Floppy Drives to the CenturionWorking on the TI-99Let’s Build a Vacuum Tube Half AdderVacuum Tube Computer P.15 – Building a Soft Start to Battle In-rush CurrentThe PDP-11/83 Boots!

The World’s Largest 555 Timer… Again! @UsagiElectric

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