Gravity Wave (Verified)

[selfdestroyer]

This is a fun pedal and will get boxed up for sure.

I was battling with another build of mine and decided to populate this to clear the mind a bit and next thing I knew it, I was firing it up. Played with it for about 45-hour and it was fun. From subtle to extreme chorus effect.



I also took my voltages to share.
Powersource: 9.1v

IC1:

1 4.3v
2 4.3v
3 3.9v
4 0
5 4.3v
6 4.3v
7 4.3v
8 8.7v

IC2:

1 4.9v
2 2.4v
3 0
4 0
5 2.7v
6 2.4v
7 0.8v
8 0.8v
9 2.4v
10 2.4v
11 2.4v
12 2.4v
13 2.4v
14 2.4v
15 2.4v
16 2.4v

IC3:

1 Varied
2 4.2v
3 Varied
4 8.7v
5 Varied
6 Varied
7 Varied
9 Varied
10 4.3v
11 0
12 4.3v
13 4.3v
14 Varied

IC4:

1 4.3v
2 4.3v
3 4.3v
4 0
5 4.3v
6 4.3v
7 4.3v
8 8.7

Edit: Fixed wrong voltages

Cody

[Alex]

Hi Cody.
Is your Dimension pot working properly?
Some people built it on vero and had some problems:
http://tagboardeffects.blogspot.fr/2016/02/madbean-gravity-wave-earthquaker.html

[Alex]

There's a writing mistake in you IC3 voltages.
14 pins and Pin 11 should be 0.

[jimilee]

Well that's cool.


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[alparent]

That's good news.
Glad others are also verifying these great projects.

[selfdestroyer]

Hi Cody.
Is your Dimension pot working properly?
Some people built it on vero and had some problems:
http://tagboardeffects.blogspot.fr/2016/02/madbean-gravity-wave-earthquaker.html

Thats weird, I am definitely not getting any motor boating on the Dim pot. I will hook it up again tonight and play around with it. To be honest, I just watched the PGS video and I was able to achieve some of the sounds right off the bat so I called it good.

There's a writing mistake in you IC3 voltages.
14 pins and Pin 11 should be 0.

I checked my notes this morning and that was no misprint. I will trace it out tonight and see if it is in fact wrong.

Thanks for the info.

Cody

[selfdestroyer]

I will add this for reference:

Rate: Sets the speed of the LFO. The miniature LED will show the tempo even in bypass mode.

Shape: From soft triangle through hard square wave.

Dimension: Adds a slight slap-back at low levels, reverb-like ambiance at mid levels and an echo-resonance at max.

Intensity: How much the LFO modulates the delay time.

Animate: How far the pitch shifted signal swings, lower levels equals a tighter and more focused shift à la traditional chorus. As you increase the control a more wild and animated pitch shift begins to emerge.

Depth: How much modulated signal is blended in with the dry signal.

Cody

[madbean]

As mentioned before, pin11 of IC3 should definitely be 0v. It's connected to the ground plane.

Thanks for the update on verification

[selfdestroyer]

As mentioned before, pin11 of IC3 should definitely be 0v. It's connected to the ground plane.

Thanks for the update on verification

ok, I rechecked my voltages and I definitely have 0v on pin 11 of IC3. I just wrote it down wrong. LOL

The dimension pot will oscillate just over 50% like a feedback pot on a delay pedal. Some tweaking might be in order.

This thing sounds great and will be boxed soon.

Cody

[jimilee]

Why is this not in the store??? I need to have one.


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[alparent]

There is enought etchers here to make you one. Just ask and make an arrangement.
I need to etch more boards (now that Brian added some projects) I could whip one up for you. (If you're not in a big rush.)

[jimilee]

There is enought etchers here to make you one. Just ask and make an arrangement.
I need to etch more boards (now that Brian added some projects) I could whip one up for you. (If you're not in a big rush.)

That would be lovely, thank you. No rush. I'd  learn if I didn't have to drill the boards.


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[gül]

I feel the same, Jimilee. I love etching my own boards but the drilling makes me want to tear my hair out. I just showed my girlfriend how to do it. Let's see how many she does for me before she realizes how tedious it is. 

[alparent]

What are you using? With the right tools......it takes the time it takes......but it's not that bad.

[dan.schumaker]

I feel the same, Jimilee. I love etching my own boards but the drilling makes me want to tear my hair out. I just showed my girlfriend how to do it. Let's see how many she does for me before she realizes how tedious it is. 

I feel the opposite.  I've never been able to get a good etch, but after getting a dremel drill press, drilling holes is no issue for me.