madbeanpedals::forum

Projects => Build Reports => Topic started by: drsteel on January 23, 2018, 11:15:03 PM

Title: Duplex Drive
Post by: drsteel on January 23, 2018, 11:15:03 PM
I'm trying to get a little more serious about my building in 2018, so I'm de-lurking to share a build for the first time with this great community. This is actually a few months old, but perhaps the one I'm most proud of after about a year or so of burning my fingertips with this new hobby! It's a Duplex Drive based on electricb's wonderful PCB. Perhaps the most ambitious board I've ever populated, and so I was incredibly chuffed when everything worked first time (unusual for me). Also my first attempt at silkscreening an enclosure (been etching with mixed results before).
Title: Re: Duplex Drive
Post by: cajone5 on January 23, 2018, 11:23:32 PM
Really nice work outside and in.  Really like the graphics w/ the plain box and clear knobs.
Title: Re: Duplex Drive
Post by: Adam_DIY on January 24, 2018, 11:16:24 AM
Love it.  That sir is  8)
Title: Re: Duplex Drive
Post by: drsteel on January 24, 2018, 01:24:05 PM
Thanks, both!
Title: Re: Duplex Drive
Post by: matmosphere on January 24, 2018, 01:51:50 PM
Nicely done. Very clean  inside and out. If you are getting more serious about building then I can't imagine what things will look like later this year.  ;D

Excellent choice of artwork for the circuit!
Title: Re: Duplex Drive
Post by: Aleph Null on January 24, 2018, 04:49:50 PM
Looks great! The silk screen reminds me of old ZVex graphics; looks really sharp.
Title: Re: Duplex Drive
Post by: stringsthings on January 24, 2018, 05:15:36 PM
That's a very good build.  Superb graphics.

( reminds me ... I need to go back and tweek my build )
Title: Re: Duplex Drive
Post by: Philthy on January 25, 2018, 12:57:29 AM
Awesome. Great pedal.
Title: Re: Duplex Drive
Post by: drsteel on January 25, 2018, 03:03:39 AM
Thanks, all!

Me too, stringsthings! I socketed the cap and the two resistors that warriorpoet recommended to you back in the group buy thread—had actually forgotten about it until you mentioned tweaking it...
Title: Re: Duplex Drive
Post by: stringsthings on January 25, 2018, 11:57:07 PM
Just found my old build and plugged in a tele-type.  For some reason, I quite like the darker sound
and the contrast with the brighter side.  ( not sure what guitar I originally plugged into the build ).
So I think I'll keep it as it is for now.  I wonder if I was "expecting" some sort of sound when the build
was new.  Enough time has passed that I was listening to it with fresh ears. 

I do need to solder in the diodes (D1,D2) .  They're in sockets and kind of loose.  I'm pretty sure I used 1N60P's.
Title: Re: Duplex Drive
Post by: selfdestroyer on January 31, 2018, 09:22:04 PM
GIANT DIODE FOR THE WIN!

With that out of the way, I love the artwork. The colors are so vivid!

Clean build for sure.

Cody
Title: Re: Duplex Drive
Post by: drsteel on February 02, 2018, 02:35:24 AM
Haha—oh man, that giant diode. I don't recall where I got those, but getting that to fit was an adventure! I still have 9 more on a reel that I don't know I'll ever find a use for.

Thanks for the kind words!
Title: Re: Duplex Drive
Post by: selfdestroyer on February 02, 2018, 09:31:00 PM
Quote from: drsteel on February 02, 2018, 02:35:24 AM
Haha—oh man, that giant diode. I don't recall where I got those, but getting that to fit was an adventure! I still have 9 more on a reel that I don't know I'll ever find a use for.

Thanks for the kind words!

I have a few around also, the adventures of ordering from Mouser. You miss read one number in the datasheet and next thing you know you are ankles deep in huge parts.

Cody
Title: Re: Duplex Drive
Post by: EBK on February 02, 2018, 10:10:37 PM
I have to agree that the giant diode is epic.   ;D
I've only succeeded in accidentally ordering large capacitors, but I think I need to intentionally get some of those diodes!  Imagine what one would look like in a 1590A build.  8)

Edit:  I'm STILL obsessed with that giant diode.   ::)
I now really want to create a layout for a surface mount op amp chip surrounded by giant discrete parts.   ;)
Title: Re: Duplex Drive
Post by: Boba7 on February 03, 2018, 12:47:20 PM
Wow that looks fantastic! Congrats!
Title: Re: Duplex Drive
Post by: drsteel on February 03, 2018, 03:09:39 PM
Quote from: selfdestroyer on February 02, 2018, 09:31:00 PM
I have a few around also, the adventures of ordering from Mouser. You miss read one number in the datasheet and next thing you know you are ankles deep in huge parts.

Cody

I looked back through my email, and I bought the diodes from ebay. I think I saw the brand (Motorola) and just assumed they'd be good quality, with no idea how big they were! Still, making good on these mistakes is part of what makes this hobby interesting!

I have also Mouser'd without due respect to all the specs, and have a small drawer full of humongous electros as a result.
Title: Re: Duplex Drive
Post by: MagnusO on February 05, 2018, 03:10:44 PM
Nice build, love the silkscreening. I've done screening but not on a pedal yet so I get how tricky that must've been.
Title: Re: Duplex Drive
Post by: blearyeyes on February 07, 2018, 07:51:06 PM
Very nice! I think you photoshopped that diode in there just to mess with our heads.