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Messages - mark123

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1
Build Reports / Lots of issues with madbean projects.
« on: July 07, 2018, 01:57:25 PM »
I guess I'm venting.  It costs a lot of time and money to build a pedal and it just seems so wasteful.  So far I've built a VFE Tractor Beam, a Wumpus and a Dig Dug 2.

The Tractor Beam (I got the early version with the original VFE switching board) works and I'm happy with the sound.  The Wumpus worked for a while and then crapped out.  I haven't had the gumption to tear into it to figure it out, mostly because I wasn't happy with it's limitations.  I know it's not a production pedal and was a freebie board when I bought the Dig Dug 2 so I wasn't too frustrated with it and I just shelved it.

Today, I finally got the parts for the Dig Dug 2 today and put it together.  I even made an engraved enclosure for it.  It's a pretty neat pedal and I was having fun playing with it but in the same manner as the Wumpus it quit after a few minute of use.  :o  I imagine it's the expensive photocoupler parts.

I guess I'm just disappointed and I'm going to give up on putting together designs that aren't my own.

2
VFE Projects / Re: Triumvirate - purpose of the series EQs
« on: February 03, 2018, 08:56:02 PM »
Excellent. Thanks for the info.

3
VFE Projects / Re: Triumvirate - purpose of the series EQs
« on: February 03, 2018, 02:03:04 PM »
Googling led me to cascaded first order filters. Is that a better description of this?

4
VFE Projects / Re: Triumvirate - purpose of the series EQs
« on: February 03, 2018, 01:58:26 PM »
They second order filters, which are steeper than the more common first order ones. So that should give a better separation between the different bands.
Thanks. I'll Google the term.


5
VFE Projects / Triumvirate - purpose of the series EQs
« on: February 03, 2018, 12:19:04 PM »
I'm probably going to pick up a Triumvirate PCB so I checked out the PDF. 

Can someone explain the purpose of the series stacked EQs for the Treble, Mid and Bass?

Just wondering.

6
I'm almost 80% sure is a blown LED. I'll have to tear it apart when I get a few moments. Maybe next week.

The biggest downfall of the design is you have to get actual flesh near the sensor. A shoe keeps your foot too far away for it to work. And you know how I feel about barefoot pedal demos. Bleh! But it works and is fun.

7
The Wumpus has died. I was playing it and it just pooped out. Either the signal trace that lifted off the board broke free or I blew out one of the LEDs.

RIP

8
Tech Help - Projects Page / Re: Dig Dug 2 low output
« on: January 02, 2018, 12:49:34 PM »
I was able to get the correct voltage readings on the CD4017 but still nothing from the guitar signal.

The wiring diagram shows the input and output jacks wired opposite. What's up with that?

9
Tech Help - Projects Page / Dig Dug 2 low output
« on: January 01, 2018, 04:38:26 PM »
When I hook up the Dig Dug 2 (unboxed) I get a very low signal.  This is with the gain trimmers and effect volumes all the way up.  I can hear the tremolo pulse and the wah does filter but the volume is very low. It is as if the  guitar signal is being attenuated but the effect sans original  signal is still coming out of the output.

Two issues I noticed is that on the CD4017 I'm getting 0v at pin 3 and 15.  I don't see anything missing and I checked that the diodes are properly aligned.  All other voltages seem to be correct. 

What's to check next? 

Thanks for the assistance.

10
I didn't have a 15nF cap so I stuck in a 18nF to get it tested.  It actually works.  I've got some 15nF caps coming in so I'll swap it out later.

In its current configuration it seems that I've got to max out all the trimpots (except BRIGHT is at the other extreme at zero) to get it to work properly.  Is this normal? No adjustment seems to be available.

11
Tech Help - Projects Page / Re: LEDs for DigDug build
« on: December 19, 2017, 07:03:53 PM »
I have tons of 3mm what do you need?
Hey, thanks. I found a few other things for other projects and placed a Tayda order.
Much appreciated though. You're a good fellow.

12
Tech Help - Projects Page / Re: LEDs for DigDug build
« on: December 19, 2017, 08:47:42 AM »
Oh, I see.  It's clearance with the 9mm pots.  Shoot!  I hate to make such a small order.


13
Tech Help - Projects Page / LEDs for DigDug build
« on: December 19, 2017, 08:36:45 AM »
Is there any reason to not use 5mm LEDs for the DigDug2 build? Will the holes be too close? Is it a concern considering the height of the LEDs?

Just wondering because I have a ton of 5mm LEDs on hand and only a few mixed colors of 3mm. 

Regardless, I should use the same color and manufacturer because the FV of the LED affects the CD4017, correct?

14
Build Reports / Re: Dandy Horse build
« on: December 10, 2017, 08:11:36 PM »
Amazing build, friend.

15
No worries. I got a Dig Dug 2 to build. :D

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