Author Topic: Economy memory man, a simple analog delay  (Read 1678 times)

thomasha

  • Stompbox Star
  • ***
  • Posts: 194
  • Thomas
    • View Profile
Economy memory man, a simple analog delay
« on: July 02, 2019, 03:57:48 PM »
Long time without posting, but since I started with BBDs I had a lot of new (old) material to read. Thanks to Scruffie I could find the economy memory man. It's just a smaller version, without all the filtering and extra modulation and the compander, so it should fit in a smaller enclosure. I wonder why I can't find this pedal built more often...

I started with this schematic


and made some changes to a simple 9v power supply and the cheaper v3205 v3201 combo.
Since I used a different clock, there is no chorus in this one.

The boost was also reduced with a 2.7k resistor, just to overcome the volume drop at the centre of the blend pot.






« Last Edit: July 03, 2019, 10:49:35 AM by thomasha »

pickdropper

  • Electron Doctor
  • *****
  • Posts: 6090
    • View Profile
Re: Economy memory man, a simple analog delay
« Reply #1 on: July 02, 2019, 04:14:36 PM »
This is fantastic on so many levels.
Function f(x)
Follow me on Instagram as pickdropper

mjg

  • Electron Doctor
  • *****
  • Posts: 780
  • Matt
    • View Profile
    • My pedal blog
Re: Economy memory man, a simple analog delay
« Reply #2 on: July 02, 2019, 04:16:36 PM »
As usual, another amazing tiny build.   I always struggle to believe you can close the lid on these things!  ;D

dawson

  • Transistor Tickler
  • **
  • Posts: 53
    • View Profile
Re: Economy memory man, a simple analog delay
« Reply #3 on: July 02, 2019, 05:10:30 PM »
Thomasha for President 2020.

selfdestroyer

  • skilled electronics ninja master
  • Electron Doctor
  • *****
  • Posts: 4862
  • Cody - Fresno CA USA
    • View Profile
    • My Blog
Re: Economy memory man, a simple analog delay
« Reply #4 on: July 02, 2019, 06:13:37 PM »
Damn... just damn.

Amazing build. Love the artwork also!

What knobs are those? I have been looking for a few smaller diameter knobs for a few synth builds I am working on and those look great.

gordo

  • Electron Doctor
  • *****
  • Posts: 2025
    • View Profile
    • Project Website
Re: Economy memory man, a simple analog delay
« Reply #5 on: July 02, 2019, 06:55:48 PM »
Unbelievable.  That's like the pedal equivalent of a clown car...

dan.schumaker

  • Electron Doctor
  • *****
  • Posts: 679
  • Schu-Tone
    • View Profile
    • Schu-Tone
Re: Economy memory man, a simple analog delay
« Reply #6 on: July 02, 2019, 07:10:15 PM »
Holy hell!  Awesome man!

Sarde

  • Transistor Tickler
  • **
  • Posts: 50
    • View Profile
    • Pendragon Guitarworks
Re: Economy memory man, a simple analog delay
« Reply #7 on: July 02, 2019, 08:58:10 PM »
I'm overwhelmed and amazed at this. Any chance of a demo video?
Check out some of my projects over at https://pendragonguitarworks.wordpress.com/

alanp

  • Electron Doctor
  • *****
  • Posts: 5483
    • View Profile
    • http://alanp.info/
Re: Economy memory man, a simple analog delay
« Reply #8 on: July 02, 2019, 09:12:47 PM »
Simple... Yeah...

Edit -- I also like how you even used the weird footprint of the MN3005 to squeeze another millimeter of space in for the trimpots.
« Last Edit: July 02, 2019, 09:25:10 PM by alanp »
"Hot water, good dentishtry and shoft lavatory paper."
- Cohen the Barbarian, on what is greatest in life
My OSHpark shared projects
My website

EBK

  • Electron Doctor
  • *****
  • Posts: 1267
  • Eric K.
    • View Profile
Re: Economy memory man, a simple analog delay
« Reply #9 on: July 03, 2019, 04:09:09 AM »
Someone needs to find Thomas some smaller enclosures to work with.  He's no longer being challenged.  ;D
Not affiliated with Oatey, makers of the world's best and most delicious* low tar solder paste. Ask for Oatey -- It's the juiciest!

*Solder paste is not food.  If ingested, seek medical help promptly.

jprizz

  • Solder Ninja
  • ****
  • Posts: 349
  • Josh
    • View Profile
Re: Economy memory man, a simple analog delay
« Reply #10 on: July 03, 2019, 05:39:41 AM »
holy shnikees! At first I thought 'No Way he fit that delay into that little thing', then I scrolled farther down... jaw hits the desk!

That.Is.Impressive!

DLW

  • Stompbox Star
  • ***
  • Posts: 163
    • View Profile
Re: Economy memory man, a simple analog delay
« Reply #11 on: July 03, 2019, 10:04:46 AM »
Holy jeebus. You even moved the trimmers in between the nubs of the MN3005 to maximize space?

At some point, will you please post pictures of a pedal board of 1590LBs, so I can cry myself to sleep at night.

fair.child

  • Electron Doctor
  • *****
  • Posts: 648
    • View Profile
Re: Economy memory man, a simple analog delay
« Reply #12 on: July 03, 2019, 10:11:31 AM »
This is going to be build of the year 2019. Geez, very fantastic build!

thomasha

  • Stompbox Star
  • ***
  • Posts: 194
  • Thomas
    • View Profile
Re: Economy memory man, a simple analog delay
« Reply #13 on: July 03, 2019, 10:48:55 AM »
Thanks for the kind words guys!
I added some extra pictures of the board that I forgot yesterday...

Quote
What knobs are those? I have been looking for a few smaller diameter knobs for a few synth builds I am working on and those look great.
https://www.aliexpress.com/item/32812304696.html?spm=a2g0s.9042311.0.0.7c694c4dixEsEo

But they are for knurled pots, so I had to sand them. I use a 6 mm drill bit and sanding paper until it fits. Unfortunately the 6.5 mm drill bit is too big.

Quote
You even moved the trimmers in between the nubs of the MN3005 to maximize space?
yep, the weird footprint of the BBD helped. The output balance trimmer really helps reducing the whining.

Bio77

  • Solder Ninja
  • ****
  • Posts: 316
    • View Profile
Re: Economy memory man, a simple analog delay
« Reply #14 on: July 03, 2019, 10:57:36 AM »
Great build!  I had the same thought as when I saw your Electric Mistress build.  This is like a fine watch, a piece of art.

Someone needs to find Thomas some smaller enclosures to work with.  He's no longer being challenged.  ;D

He will eventually be limited by the size of a toe!